图示：

核心代码：

//将0x格式的颜色转换为Hex格式，并计算插值返回rgb颜色
Vue.prototype.$convertToHex = function (colorCode1, colorCode2, amount) {
    // 确保输入是字符串，并检查是否以'0x'开头
    let newCode1 = ''
    let newCode2 = ''
    if (typeof colorCode1 === 'string' && colorCode1.startsWith('0x')) {
        // 移除'0x'前缀并返回新的十六进制字符串  // 从索引2开始取子串（跳过'0x'）
        newCode1 = '#' + colorCode1.substring(2)
    }
    if (typeof colorCode2 === 'string' && colorCode2.startsWith('0x')) {
        // 移除'0x'前缀并返回新的十六进制字符串  // 从索引2开始取子串（跳过'0x'）
        newCode2 = '#' + colorCode2.substring(2)
    }
    // 将颜色字符串转换为RGB对象
    let rgb1 = {
        r: parseInt(newCode1.substring(1, 3), 16),
        g: parseInt(newCode1.substring(3, 5), 16),
        b: parseInt(newCode1.substring(5, 7), 16)
    };
    let rgb2 = {
        r: parseInt(newCode2.substring(1, 3), 16),
        g: parseInt(newCode2.substring(3, 5), 16),
        b: parseInt(newCode2.substring(5, 7), 16)
    };

    // 插值计算
    let r = Math.round(rgb1.r + (rgb2.r - rgb1.r) * amount);
    let g = Math.round(rgb1.g + (rgb2.g - rgb1.g) * amount);
    let b = Math.round(rgb1.b + (rgb2.b - rgb1.b) * amount);
    let colorRGB = `rgb(${r},${g},${b})`
    return colorRGB
}

使用方法：

let colorCode1 = "0x00FF2F"
let colorCode2 = "0xFEA90B"
let amount = 0.6  // 插值
console.log('获取到的rgb格式颜色值'， this.$convertToHex(colorCode1,colorCode2,amount))

案例（根据温度值数字算渐变值）：

//0x格式颜色值
let  gradientObj={
   16: "0x00FF2F",
    32: "0xFEA90B",
    36: "0xFF3300",
    -40: "0x061BFC",
 }
//判断数字是否小于等于对象的key值，相同就拿出对应的value值,并返回当前的rgb值
        changeBgColor(num) {
            let colorCode1 = ''
            let colorCode2 = ''
            let amount = 1
            let keys = Object.keys(this.gradientData)
            keys.sort((a, b) => {
                return a - b;
            });
            if (num <= parseInt(keys[0])) {
                colorCode1 = this.gradientData[keys[0]]
                colorCode2 = this.gradientData[keys[0]]
            } else if (num >= parseInt(keys[keys.length - 1])) {
                colorCode1 = this.gradientData[keys[keys.length - 1]]
                colorCode2 = this.gradientData[keys[keys.length - 1]]
            } else {
                for (let i = 0; i < keys.length - 1; i++) {
                    if (num >= keys[i] && num <= keys[i + 1]) {
                        colorCode1 = this.gradientData[keys[i]]
                        colorCode2 = this.gradientData[keys[i + 1]]
                        amount = (num * 1.0 - keys[i]) / (keys[i + 1] - keys[i]); // 根据温度值计算插值比例
                        break;
                    }
                }
            }

            return this.$convertToHex(colorCode1, colorCode2, amount)
        },

案例使用：

this.changeBgColor(30.25)   //输入值为：rgb(226, 178, 15)