vue-element換膚所有主題色和基礎(chǔ)色均可實現(xiàn)自主配置

更新時間：2023年04月25日 09:42:10 作者：微笑的魚_

這篇文章主要介紹了vue-element換膚所有主題色和基礎(chǔ)色均可實現(xiàn)自主配置，具有很好的參考價值，希望對大家有所幫助。如有錯誤或未考慮完全的地方，望不吝賜教

element換膚所有主題色和基礎(chǔ)色均可自主配置

1.element-ui官方提供的動態(tài)切換主題方法換膚但此方法只可修改$–color-primary 這一個主題色及其衍生色

2. 獲取element-ui的theme-chalk/index.css文件，找到基礎(chǔ)色所對應(yīng)的顏色值，抽取顏色值進行替換，此種方法無法自動生成衍生色

	{
		'#67C23A': theme.color_success,
        '#E6A23C': theme.color_warning,
        '#F56C6C': theme.color_danger,
        '#909399': theme.color_info,
	}

3.自定義css變量，使用下面的方法去修改變量，此種方法僅可修改自定義的樣式

document.documentElement.style.setProperty('--theme-color', value)

最終方案

以上三種相結(jié)合，實現(xiàn)我們的需求，各種主題色、基礎(chǔ)色自主配置

以下是所有代碼

Theme.vue

···ht-form-item是自定義組件和 el-form-item 差不多

<template>
  <div>
    <h4 class="header">
      <span>主題配色選擇</span>
      <el-button type="default" @click="resetTheme">重置</el-button>
    </h4>
    <el-row>
      <el-col :span="8">
        <ht-form-item label="主題顏色" label-width="140px">
          <el-color-picker
            v-model="theme"
            :predefine="['#409eff', '#1890ff', '#304156','#212121','#11a983', '#13c2c2', '#6959CD', '#f5222d', ]"
            class="theme-picker"
            popper-class="theme-picker-dropdown"
          />
        </ht-form-item>
        <ht-form-item label="成功顏色" label-width="140px">
          <el-color-picker
            v-model="themeColor.color_success"
            :predefine="['#67c23a', '#1890ff', '#304156','#212121','#11a983', '#13c2c2', '#6959CD', '#f5222d', ]"
            class="theme-picker"
            popper-class="theme-picker-dropdown"
          />
        </ht-form-item>
        <ht-form-item label="警告顏色" label-width="140px">
          <el-color-picker
            v-model="themeColor.color_warning"
            :predefine="['#e6a23c', '#1890ff', '#304156','#212121','#11a983', '#13c2c2', '#6959CD', '#f5222d', ]"
            class="theme-picker"
            popper-class="theme-picker-dropdown"
          />
        </ht-form-item>
        <ht-form-item label="危險顏色" label-width="140px">
          <el-color-picker
            v-model="themeColor.color_danger"
            :predefine="['#f56c6c', '#1890ff', '#304156','#212121','#11a983', '#13c2c2', '#6959CD', '#f5222d', ]"
            class="theme-picker"
            popper-class="theme-picker-dropdown"
          />
        </ht-form-item>
        <ht-form-item label="信息顏色" label-width="140px">
          <el-color-picker
            v-model="themeColor.color_info"
            :predefine="['#909399', '#1890ff', '#304156','#212121','#11a983', '#13c2c2', '#6959CD', '#f5222d', ]"
            class="theme-picker"
            popper-class="theme-picker-dropdown"
          />
        </ht-form-item>
        <ht-form-item label="次要主題顏色" label-width="140px">
          <el-color-picker
            v-model="themeColor.color_secondary"
            :predefine="['#dfebfc', '#1890ff', '#304156','#212121','#11a983', '#13c2c2', '#6959CD', '#f5222d', ]"
            class="theme-picker"
            popper-class="theme-picker-dropdown"
          />
        </ht-form-item>
      </el-col>
      <el-col :span="8">
        <ht-form-item label="基礎(chǔ)白色" label-width="140px">
          <el-color-picker
            v-model="themeColor.color_white"
            :predefine="['#fff', '#1890ff', '#304156','#212121','#11a983', '#13c2c2', '#6959CD', '#f5222d', ]"
            class="theme-picker"
            popper-class="theme-picker-dropdown"
          />
        </ht-form-item>
        <ht-form-item label="基礎(chǔ)黑色" label-width="140px">
          <el-color-picker
            v-model="themeColor.color_black"
            :predefine="['#000', '#1890ff', '#304156','#212121','#11a983', '#13c2c2', '#6959CD', '#f5222d', ]"
            class="theme-picker"
            popper-class="theme-picker-dropdown"
          />
        </ht-form-item>
        <ht-form-item label="主要文字顏色" label-width="140px">
          <el-color-picker
            v-model="themeColor.color_text_primary"
            :predefine="['#303133', '#1890ff', '#304156','#212121','#11a983', '#13c2c2', '#6959CD', '#f5222d', ]"
            class="theme-picker"
            popper-class="theme-picker-dropdown"
          />
        </ht-form-item>
        <ht-form-item label="常規(guī)文字顏色" label-width="140px">
          <el-color-picker
            v-model="themeColor.color_text_regular"
            :predefine="['#606266', '#1890ff', '#304156','#212121','#11a983', '#13c2c2', '#6959CD', '#f5222d', ]"
            class="theme-picker"
            popper-class="theme-picker-dropdown"
          />
        </ht-form-item>
        <ht-form-item label="次要文字顏色" label-width="140px">
          <el-color-picker
            v-model="themeColor.color_text_secondary"
            :predefine="['#909399', '#1890ff', '#304156','#212121','#11a983', '#13c2c2', '#6959CD', '#f5222d', ]"
            class="theme-picker"
            popper-class="theme-picker-dropdown"
          />
        </ht-form-item>
        <ht-form-item label="占位文字顏色" label-width="140px">
          <el-color-picker
            v-model="themeColor.color_text_placeholder"
            :predefine="['#c0c4cc', '#1890ff', '#304156','#212121','#11a983', '#13c2c2', '#6959CD', '#f5222d', ]"
            class="theme-picker"
            popper-class="theme-picker-dropdown"
          />
        </ht-form-item>
      </el-col>
      <el-col :span="8">
        <ht-form-item label="一級邊框顏色" label-width="140px">
          <el-color-picker
            v-model="themeColor.border_color_base"
            :predefine="['#dcdfe6', '#1890ff', '#304156','#212121','#11a983', '#13c2c2', '#6959CD', '#f5222d', ]"
            class="theme-picker"
            popper-class="theme-picker-dropdown"
          />
        </ht-form-item>
        <ht-form-item label="二級邊框顏色" label-width="140px">
          <el-color-picker
            v-model="themeColor.border_color_light"
            :predefine="['#e4e7ed', '#1890ff', '#304156','#212121','#11a983', '#13c2c2', '#6959CD', '#f5222d', ]"
            class="theme-picker"
            popper-class="theme-picker-dropdown"
          />
        </ht-form-item>
        <ht-form-item label="三級邊框顏色" label-width="140px">
          <el-color-picker
            v-model="themeColor.border_color_lighter"
            :predefine="['#ebeef5', '#1890ff', '#304156','#212121','#11a983', '#13c2c2', '#6959CD', '#f5222d', ]"
            class="theme-picker"
            popper-class="theme-picker-dropdown"
          />
        </ht-form-item>
        <ht-form-item label="四級邊框顏色" label-width="140px">
          <el-color-picker
            v-model="themeColor.border_color_extra_light"
            :predefine="['#f2f6fc', '#1890ff', '#304156','#212121','#11a983', '#13c2c2', '#6959CD', '#f5222d', ]"
            class="theme-picker"
            popper-class="theme-picker-dropdown"
          />
        </ht-form-item>
        <ht-form-item label="基礎(chǔ)背景色" label-width="140px">
          <el-color-picker
            v-model="themeColor.background_color_base"
            :predefine="['#f5f7fa', '#1890ff', '#304156','#212121','#11a983', '#13c2c2', '#6959CD', '#f5222d', ]"
            class="theme-picker"
            popper-class="theme-picker-dropdown"
          />
        </ht-form-item>
        <ht-form-item label="第二基礎(chǔ)背景色" label-width="140px">
          <el-color-picker
            v-model="themeColor.background_color_secondary"
            :predefine="['#f0f2f5', '#1890ff', '#304156','#212121','#11a983', '#13c2c2', '#6959CD', '#f5222d', ]"
            class="theme-picker"
            popper-class="theme-picker-dropdown"
          />
        </ht-form-item>
      </el-col>
    </el-row>
    <el-row>
      <el-col :span="8">
        <ht-form-item label="首頁導(dǎo)航顏色" label-width="140px">
          <span class="color-box">
            <span class="color-block" :style="{backgroundColor:theme_color}"></span>
          </span>
        </ht-form-item>
      </el-col>
      <el-col :span="8">
        <ht-form-item label="首頁導(dǎo)航懸浮顏色" label-width="140px">
          <span class="color-box">
            <span class="color-block" :style="{backgroundColor:theme_color_active}"></span>
          </span>
        </ht-form-item>
      </el-col>
    </el-row>
  </div>
</template>

<script>
import {mapState} from 'vuex';
import variables from '@/assets/css/theme-variables.scss'
const version = require('element-ui/package.json').version
const ORIGINAL_THEME = '#409EFF' // default color

export default {
  data() {
    return {
      themeColor: {},
      chalk: '', // content of theme-chalk css
      theme: ORIGINAL_THEME,
      theme_color: '#0d84ff',
	  theme_color_active: '#006bd9',
    }
  },
  computed: {
    ...mapState({
      themeVaribles: state => state.theme,
      defaultTheme: state => state.theme.color_primary
    })
  },
  watch: {
    defaultTheme: {
      handler: function(val, oldVal) {
        this.theme = val
      },
      immediate: true
    },
    themeColor: {
      handler: function (theme, oldTheme) {
        // element默認(rèn)主題配色值
        this.setIndexStyle(this.getColorMap(theme))
        this.setCssVariables(theme)        
        // vuex存儲顏色
        for(let x in theme) {
          this.$store.dispatch('theme/changeSetting', {
            key: x,
            value: theme[x]
          })
        }
        localStorage.setItem('themeColor',JSON.stringify(theme))
      },
      deep: true
    },
    theme(val,oldVal) {
      if (typeof val !== 'string') return
      const themeCluster = this.getThemeCluster(val.replace('#', ''))
      const originalCluster = this.getThemeCluster(oldVal.replace('#', ''))
      // console.log(themeCluster, originalCluster)

      const getHandler = (variable, id) => {
        return () => {
          const originalCluster = this.getThemeCluster(ORIGINAL_THEME.replace('#', ''))
          let newStyle = this.updateStyle(this[variable], originalCluster, themeCluster)
          // 將其他配色添加進去
          newStyle = this.getStyleTemplate(newStyle,this.getColorMap(this.themeColor));

          let styleTag = document.getElementById(id)
          styleTag.innerText = newStyle
        }
      }

      const chalkHandler = getHandler('chalk', 'my-chalk')
      chalkHandler()

      const styles = [].slice.call(document.querySelectorAll('style'))
      .filter(style => {
        const text = style.innerText
        return new RegExp(oldVal, 'i').test(text) && !/Chalk Variables/.test(text)
      })
      styles.forEach(style => {
        const { innerText } = style
        if (typeof innerText !== 'string') return
        style.innerText = this.updateStyle(innerText, originalCluster, themeCluster)
      })
      //this.themeColor.color_primary = val
      localStorage.setItem('color_primary',val)
      this.$store.dispatch('theme/changeSetting', {
        key: 'color_primary',
        value: val
      })

      this.theme_color = this.generaterSimilarColor(val,0.1)
      this.theme_color_active = this.generaterSimilarColor(val,0.2)
      const node = document.documentElement
      node.style.setProperty('--theme-color', this.theme_color)
      node.style.setProperty('--theme-color-active', this.theme_color_active)
    }
  },
  created() {
    // 獲取index.css
    this.getFile(`//unpkg.com/element-ui@${version}/lib/theme-chalk/index.css`)
    .then(({ data }) => {
      data = data.replace(/@font-face{[^}]+}/, '')
      this.chalk = data
      const style = document.createElement('style');
      style.id = 'my-chalk'
      style.innerText = this.chalk;
      document.head.appendChild(style);

      // 獲取本地存儲的基礎(chǔ)色
      if(localStorage.getItem('themeColor')) {
        this.themeColor = JSON.parse(localStorage.getItem('themeColor'))
        for(let x in this.themeColor) {
          this.$store.dispatch('theme/changeSetting', {
            key: x,
            value: this.themeColor[x]
          })
        }
      } else {
        this.themeColor = Object.assign({},this.themeVaribles)
      }
      // 獲取本地存儲的主題色
      if(localStorage.getItem("theme")) {
        this.theme = localStorage.getItem("theme")
        this.$store.dispatch('theme/changeSetting', {
          key: 'color_primary',
          value: this.theme
        })
      }
    });
  },
  methods: {
    // 重置主題
    resetTheme() {
      this.theme = ORIGINAL_THEME
	  let aVariables = {...variables}
	  delete aVariables.color_primary
      this.themeColor = {...aVariables}
    },
    getColorMap(theme) {
      return {
       // '#409EFF': theme.color_primary,
        '#67C23A': theme.color_success,
        '#E6A23C': theme.color_warning,
        '#F56C6C': theme.color_danger,
        '#909399': theme.color_info,
        '#dfebfc': theme.color_secondary,
        '#ffffff': theme.color_white,
        '#000000': theme.color_black,
        '#303133': theme.color_text_primary,
        '#606266': theme.color_text_regular,
        '#909399': theme.color_text_secondary,
        '#C0C4CC': theme.color_text_placeholder,
        '#DCDFE6': theme.border_color_base,
        '#E4E7ED': theme.border_color_light,
        '#EBEEF5': theme.border_color_lighter,
        '#F2F6FC': theme.border_color_extra_light,
        '#F5F7FA': theme.background_color_base,
        '#F0F2F5': theme.background_color_secondary
      }
    },
    // css變量改變賦值
    setCssVariables(theme) {
      const node = document.documentElement
      Object.entries(theme).forEach(ele => {
        let key = ele[0].replace(/_/g, '-');
        node.style.setProperty(`--${key}`, ele[1])
      })
    },
    // 顏色替換后的樣式文件
    getStyleTemplate(data,colorMap) {
      Object.keys(colorMap).forEach(key => {
        const value = colorMap[key];
        data = data.replace(new RegExp(key, 'ig'), value);
      });
      return data;
    },
    // 獲取文件
    getFile(url, isBlob = false) {
      return new Promise((resolve, reject) => {
        const client = new XMLHttpRequest();
        client.responseType = isBlob ? 'blob' : '';
        client.onreadystatechange = () => {
          if (client.readyState !== 4) {
            return;
          }
          if (client.status === 200) {
            const urlArr = client.responseURL.split('/');
            resolve({
              data: client.response,
              url: urlArr[urlArr.length - 1]
            });
          } else {
            reject(new Error(client.statusText));
          }
        };
        client.open('GET', url);
        client.send();
      });
    },
    // 修改顏色后替換index.css文件
    setIndexStyle(colorMap) {
      const myChalkStyle = document.getElementById("my-chalk")
	  const themeCluster = this.getThemeCluster(this.theme.replace('#', ''))
      const originalCluster = this.getThemeCluster(ORIGINAL_THEME.replace('#', ''))
	  let newStyle = this.updateStyle(this.chalk, originalCluster, themeCluster)
      newStyle = this.getStyleTemplate(newStyle,colorMap)
      myChalkStyle.innerText = newStyle;
    },
    updateStyle(style, oldCluster, newCluster) {
      let newStyle = style
      oldCluster.forEach((color, index) => {
        newStyle = newStyle.replace(new RegExp(color, 'ig'), newCluster[index])
      })
      return newStyle
    },
    // 獲取主題色和衍生色
    getThemeCluster(theme) {
      const tintColor = (color, tint) => {
        let red = parseInt(color.slice(0, 2), 16)
        let green = parseInt(color.slice(2, 4), 16)
        let blue = parseInt(color.slice(4, 6), 16)

        if (tint === 0) { // when primary color is in its rgb space
          return [red, green, blue].join(',')
        } else {
          red += Math.round(tint * (255 - red))
          green += Math.round(tint * (255 - green))
          blue += Math.round(tint * (255 - blue))

          red = red.toString(16)
          green = green.toString(16)
          blue = blue.toString(16)

          return `#${red}${green}${blue}`
        }
      }

      const shadeColor = (color, shade) => {
        let red = parseInt(color.slice(0, 2), 16)
        let green = parseInt(color.slice(2, 4), 16)
        let blue = parseInt(color.slice(4, 6), 16)

        red = Math.round((1 - shade) * red)
        green = Math.round((1 - shade) * green)
        blue = Math.round((1 - shade) * blue)

        red = red.toString(16)
        green = green.toString(16)
        blue = blue.toString(16)

        return `#${red}${green}${blue}`
      }

      const clusters = [theme]
      for (let i = 0; i <= 9; i++) {
        clusters.push(tintColor(theme, Number((i / 10).toFixed(2))))
      }
      clusters.push(shadeColor(theme, 0.1))
      return clusters
    },
    // 生成fvue相近主題色：這是一個十六進制轉(zhuǎn)rgb,rgb再轉(zhuǎn)hsl,hsl改變亮度，再轉(zhuǎn)成rgb,再轉(zhuǎn)成十六進制的方法。。。
    generaterSimilarColor(color,weight) {
     let colorChange = [];
      for (let i=1; i<7; i+=2) {
        colorChange.push(parseInt("0x"+color.slice(i, i+2)));    
      }
      let [r,g,b] = colorChange
      r /= 255, g /= 255, b /= 255;
      let max = Math.max(r, g, b), min = Math.min(r, g, b);
      let h, s, l = (max + min) / 2;
      if (max == min){ 
        h = s = 0; // achromatic
      } else {
        let d = max - min;
        s = l > 0.5 ? d / (2 - max - min) : d / (max + min);
        switch(max) {
          case r: h = (g - b) / d + (g < b ? 6 : 0); break;
          case g: h = (b - r) / d + 2; break;
          case b: h = (r - g) / d + 4; break;
        }
        h /= 6;
      }
      l = l-weight < 0 ? 0.1 : l-weight

      if(s == 0) {
        r = g = b = l; // achromatic
      } else {
        let hue2rgb = function hue2rgb(p, q, t) {
          if(t < 0) t += 1;
          if(t > 1) t -= 1;
          if(t < 1/6) return p + (q - p) * 6 * t;
          if(t < 1/2) return q;
          if(t < 2/3) return p + (q - p) * (2/3 - t) * 6;
          return p;
        }
        let q = l < 0.5 ? l * (1 + s) : l + s - l * s;
        let p = 2 * l - q;
        r = hue2rgb(p, q, h + 1/3);
        g = hue2rgb(p, q, h);
        b = hue2rgb(p, q, h - 1/3);
      }
      let rgb = [Math.round(r * 255), Math.round(g * 255), Math.round(b * 255)]
      let strHex = "#";
      for (let i=0; i<rgb.length; i++) {
        let hex = Number(rgb[i]).toString(16);
        if (hex.length < 2) {
          hex = '0' + hex;    
        }
        strHex += hex;
      }
      return strHex
    }
  },
  mounted() {
	// 獲取index.css
	this.getFile('/css/theme-chalk/index.css').then(({ data }) => {
      data = data.replace(/@font-face{[^}]+}/, '')
      this.chalk = data
      const style = document.createElement('style')
      style.id = 'my-chalk'
      style.innerText = this.chalk
      document.head.appendChild(style)

      // 獲取本地存儲的基礎(chǔ)色
      if(localStorage.getItem('themeColor')) {
        this.themeColor = JSON.parse(localStorage.getItem('themeColor'))
        for(let x in this.themeColor) {
          this.$store.dispatch('theme/changeSetting', {
            key: x,
            value: this.themeColor[x]
          })
        }
      } else {
		delete this.themeVaribles.color_primary
        this.themeColor = Object.assign({},this.themeVaribles)
      }
      // 獲取本地存儲的主題色
      if(localStorage.getItem("color_primary")) {
        this.theme = localStorage.getItem("color_primary")
        this.$store.dispatch('theme/changeSetting', {
          key: 'color_primary',
          value: this.theme
        })
      }
    });	
  }
}
</script>  

<style lang="scss" scoped>
.header {
  font-size: 14px;
  text-align: center;
  font-weight: normal;
  .el-button {
    margin-left: 10px;
  }
}
.color-box {
  display: inline-block;
  padding: 4px;
  width: 32px;
  height: 32px;
  border-radius: 4px;
  box-sizing: border-box;
  border: 1px solid #e6e6e6;
  .color-block {
    display: inline-block;
    width: 100%;
    height: 100%;
    border-radius: 2px;
  }
}
</style>

Theme.js：vuex管理主題色

import themeVariables from '@/assets/css/theme-variables.scss'

const state = {
  ...themeVariables
}
const getters = {};
const mutations = {
  CHANGE_SETTING: (state, { key, value }) => {
    // eslint-disable-next-line no-prototype-builtins
    if (state.hasOwnProperty(key)) {
      state[key] = value
    }
  }
}

const actions = {
  changeSetting({ commit }, data) {
    commit('CHANGE_SETTING', data)
  }
}

export default {
  namespaced: true,
  state,
  getters,
  mutations,
  actions
}

element-variables.scss

// 自定義主題色css變量
// 可使用js修改：document.documentElement.style.setProperty(name,value);
:root {
  --color-primary: #409eff;/*主題顏色——#409EFF*/
  --color-success: #67c23a;/*成功顏色——#67c23a*/
  --color-warning: #e6a23c;/*警告顏色——#e6a23c*/
  --color-danger: #f56c6c;/*危險顏色——#f56c6c*/
  --color-info: #909399;/*信息顏色——#909399*/
  --color-secondary: #dfebfc;/*次要主題顏色——#dfebfc*/
  --color-white: #FFFFFF; /*基礎(chǔ)白色——#FFFFFF*/
  --color-black: #000;/*基礎(chǔ)黑色——#000000*/
  --color-text-primary: #303133; /*主要文字顏色——#303133*/
  --color-text-regular: #606266; /*常規(guī)文字顏色——#606266*/
  --color-text-secondary: #909399; /*次要文字顏色——#909399*/
  --color-text-placeholder: #c0c4cc; /*占位文字顏色——#c0c4cc*/
  --border-color-base: #dcdfe6; /*一級邊框顏色——#dcdfe6*/
  --border-color-light: #e4e7ed; /*二級邊框顏色——#e4e7ed*/
  --border-color-lighter: #ebeef5; /*三級邊框顏色——#ebeef5*/
  --border-color-extra-light: #f2f6fc; /*四級邊框顏色——#f2f6fc*/
  --background-color-base: #f5f7fa; /*基礎(chǔ)背景色——#F5F7FA*/
  --background-color-secondary: #f0f2f5; /*第二基礎(chǔ)背景色——#F0F2F5*/
  --theme-color: #2761ff; /*主題顏色（即首頁導(dǎo)航欄顏色）——#2761ff*/
  --theme-color-active: #1f4ecc; /*首頁導(dǎo)航欄顏色鼠標(biāo)懸停到某一個菜單時的顏色——#1F4ECC*/
}

$--color-primary: var(--color-primary);/*主題顏色——#409EFF*/
$--color-success: var(--color-success);/*成功顏色——#67c23a*/
$--color-warning: var(--color-warning);/*警告顏色——#e6a23c*/
$--color-danger: var(--color-danger);/*危險顏色——#f56c6c*/
$--color-info: var(--color-info);/*信息顏色——#909399*/
$--color-secondary: var(--color-secondary);/*次要主題顏色——#dfebfc*/
$--color-white: var(--color-white);/*基礎(chǔ)白色——#FFFFFF*/
$--color-black: var(--color-black);/*基礎(chǔ)黑色——#000000*/
$--color-text-primary: var(--color-text-primary); /*主要文字顏色——#303133*/
$--color-text-regular: var(--color-text-regular); /*常規(guī)文字顏色——#606266*/
$--color-text-secondary: var(--color-text-secondary); /*次要文字顏色——#909399*/
$--color-text-placeholder: var(--color-text-placeholder); /*占位文字顏色——#c0c4cc*/
$--border-color-base: var(--border-color-base); /*一級邊框顏色——#dcdfe6*/
$--border-color-light: var(--border-color-light); /*二級邊框顏色——#e4e7ed*/
$--border-color-lighter: var(--border-color-lighter); /*三級邊框顏色——#ebeef5*/
$--border-color-extra-light: var(--border-color-extra-light); /*四級邊框顏色——#f2f6fc*/
$--background-color-base: var(--background-color-base); /*基礎(chǔ)背景色——#F5F7FA*/
$--background-color-secondary: var(--background-color-secondary); /*第二基礎(chǔ)背景色——#F0F2F5*/

$--theme-color: var(--theme-color); /*主題顏色（即首頁導(dǎo)航欄顏色）——#2761ff*/
$--theme-color-active: var(--theme-color-active); /*首頁導(dǎo)航欄顏色鼠標(biāo)懸停到某一個菜單時的顏色——#1F4ECC*/

element-custom.scss

@import "theme-variables.scss";

/* 改變 icon 字體路徑變量，必需 */
$--font-path: "~element-ui/lib/theme-chalk/fonts";

@import "~element-ui/packages/theme-chalk/src/index";
@import "../icon/iconfont.css";
.el-tree-node__label{font-size:12px}

theme-variables.scss

/* 改變系統(tǒng)主題色變量 ——*/
$--theme-color: #2761ff; /*主題顏色（即首頁導(dǎo)航欄顏色）——#2761ff*/
$--theme-color-active: #1f4ecc; /*首頁導(dǎo)航欄顏色鼠標(biāo)懸停到某一個菜單時的顏色——#1F4ECC*/

/* 改變element組件主題色變量 ——*/
$--color-primary: #409eff; /*主題顏色——#409EFF*/
$--color-success: #67c23a; /*成功顏色——#67c23a*/
$--color-warning: #e6a23c; /*警告顏色——#e6a23c*/
$--color-danger: #f56c6c; /*危險顏色——#f56c6c*/
$--color-info: #909399; /*信息顏色——#909399*/
$--color-secondary: #dfebfc;/*次要主題顏色——#409EFF*/
$--color-white: #ffffff; /*基礎(chǔ)白色——#FFFFFF*/
$--color-black: #000000; /*基礎(chǔ)黑色——#000000*/
$--color-text-primary: #303133; /*主要文字顏色——#303133*/
$--color-text-regular: #606266; /*常規(guī)文字顏色——#606266*/
$--color-text-secondary: #909399; /*次要文字顏色——#909399*/
$--color-text-placeholder: #c0c4cc; /*占位文字顏色——#c0c4cc*/
$--border-color-base: #dcdfe6; /*一級邊框顏色——#dcdfe6*/
$--border-color-light: #e4e7ed; /*二級邊框顏色——#e4e7ed*/
$--border-color-lighter: #ebeef5; /*三級邊框顏色——#ebeef5*/
$--border-color-extra-light: #f2f6fc; /*四級邊框顏色——#f2f6fc*/
$--background-color-base: #f5f7fa; /*基礎(chǔ)背景色——#F5F7FA*/
$--background-color-secondary: #f0f2f5; /*第二基礎(chǔ)背景色——#F0F2F5*/

/* 左側(cè)樹寬度設(shè)置 */
$--aside-width: 230px;

/* 自定義主題色變量 */
.primaryColor {
  background-color: $--color-primary;
}

//主要的一步：
:export {
  theme_color:  $--theme-color;
  theme_color_active: $--theme-color-active;
  color_primary: $--color-primary;
  color_success: $--color-success;
  color_warning: $--color-warning;
  color_danger: $--color-danger;
  color_info: $--color-info;
  color_secondary: $--color-secondary;
  color_white: $--color-white;
  color_black: $--color-black;
  color_text_primary: $--color-text-primary;
  color_text_regular: $--color-text-regular;
  color_text_secondary: $--color-text-secondary;
  color_text_placeholder: $--color-text-placeholder;
  border_color_base: $--border-color-base;
  border_color_light: $--border-color-light;
  border_color_lighter: $--border-color-lighter;
  border_color_extra_light: $--border-color-extra-light;
  background_color_base: $--background-color-base;
  background_color_secondary: $--background-color-secondary;
}