这个函数很有用。这是一个改编，相当长的执行这个repo ..

const color = (str) => {
    let rgb = [];
    // Changing non-hexadecimal characters to 0
    str = [...str].map(c => (/[0-9A-Fa-f]/g.test(c)) ? c : 0).join('');
    // Padding string with zeroes until it adds up to 3
    while (str.length % 3) str += '0';

    // Dividing string into 3 equally large arrays
    for (i = 0; i < str.length; i += str.length / 3)
        rgb.push(str.slice(i, i + str.length / 3));

    // Formatting a hex color from the first two letters of each portion
    return `#${rgb.map(string => string.slice(0, 2)).join('')}`;
}

我想要类似丰富的HTML元素的颜色，我惊讶地发现CSS现在支持hsl()颜色，所以一个完整的解决方案如下:

另参见如何自动生成N“不同”的颜色?更多类似的选择。

编辑:根据@zei的版本更新(美式拼写)

var stringToColor = (string, saturation = 100, lightness = 75) => { let hash = 0; for (let i = 0; i < string.length; i++) { hash = string.charCodeAt(i) + ((hash << 5) - hash); hash = hash & hash; } return `hsl(${(hash % 360)}, ${saturation}%, ${lightness}%)`; } // For the sample on stackoverflow function colorByHashCode(value) { return "<span style='color:" + stringToColor(value) + "'>" + value + "</span>"; } document.body.innerHTML = [ "javascript", "is", "nice", ].map(colorByHashCode).join("<br/>"); span { font-size: 50px; font-weight: 800; }

在HSL中，它的色调，饱和度，亮度。所以色调在0-359之间会得到所有的颜色，饱和度是你想要的颜色的丰富程度，100%对我来说是合适的。而亮度决定了深度，50%是正常的，25%是深色，75%是粉彩。我有30%，因为它最适合我的配色方案。

我发现随机生成的颜色往往没有足够的对比度来满足我的口味。我发现解决这个问题最简单的方法是预先填充一个非常不同的颜色列表。对于每个新字符串，分配列表中的下一个颜色:

// Takes any string and converts it into a #RRGGBB color.
var StringToColor = (function(){
    var instance = null;

    return {
    next: function stringToColor(str) {
        if(instance === null) {
            instance = {};
            instance.stringToColorHash = {};
            instance.nextVeryDifferntColorIdx = 0;
            instance.veryDifferentColors = ["#000000","#00FF00","#0000FF","#FF0000","#01FFFE","#FFA6FE","#FFDB66","#006401","#010067","#95003A","#007DB5","#FF00F6","#FFEEE8","#774D00","#90FB92","#0076FF","#D5FF00","#FF937E","#6A826C","#FF029D","#FE8900","#7A4782","#7E2DD2","#85A900","#FF0056","#A42400","#00AE7E","#683D3B","#BDC6FF","#263400","#BDD393","#00B917","#9E008E","#001544","#C28C9F","#FF74A3","#01D0FF","#004754","#E56FFE","#788231","#0E4CA1","#91D0CB","#BE9970","#968AE8","#BB8800","#43002C","#DEFF74","#00FFC6","#FFE502","#620E00","#008F9C","#98FF52","#7544B1","#B500FF","#00FF78","#FF6E41","#005F39","#6B6882","#5FAD4E","#A75740","#A5FFD2","#FFB167","#009BFF","#E85EBE"];
        }

        if(!instance.stringToColorHash[str])
            instance.stringToColorHash[str] = instance.veryDifferentColors[instance.nextVeryDifferntColorIdx++];

            return instance.stringToColorHash[str];
        }
    }
})();

// Get a new color for each string
StringToColor.next("get first color");
StringToColor.next("get second color");

// Will return the same color as the first time
StringToColor.next("get first color");

虽然它的颜色限制只有64种，但我发现大多数人在那之后都无法真正分辨出区别。我认为你可以添加更多的颜色。

虽然这段代码使用了硬编码的颜色，但至少可以保证您在开发过程中确切地知道在生产中您将看到的颜色之间的对比有多大。

颜色列表是从这个SO答案中提取的，还有其他更多颜色的列表。

我的代码是Java的。

谢谢你做的一切。

public static int getColorFromText(String text)
    {
        if(text == null || text.length() < 1)
            return Color.BLACK;

        int hash = 0;

        for (int i = 0; i < text.length(); i++)
        {
            hash = text.charAt(i) + ((hash << 5) - hash);
        }

        int c = (hash & 0x00FFFFFF);
        c = c - 16777216;

        return c;
    }

下面是我提出的一个解决方案，根据输入字符串生成美观的粉彩颜色。它使用字符串的前两个字符作为随机种子，然后基于该种子生成R/G/B。

它可以很容易地扩展，以便种子是字符串中所有字符的异或，而不仅仅是前两个字符。

灵感来自David Crow的回答:算法随机生成一个美观的调色板

//magic to convert strings to a nice pastel colour based on first two chars
//
// every string with the same first two chars will generate the same pastel colour
function pastel_colour(input_str) {

    //TODO: adjust base colour values below based on theme
    var baseRed = 128;
    var baseGreen = 128;
    var baseBlue = 128;

    //lazy seeded random hack to get values from 0 - 256
    //for seed just take bitwise XOR of first two chars
    var seed = input_str.charCodeAt(0) ^ input_str.charCodeAt(1);
    var rand_1 = Math.abs((Math.sin(seed++) * 10000)) % 256;
    var rand_2 = Math.abs((Math.sin(seed++) * 10000)) % 256;
    var rand_3 = Math.abs((Math.sin(seed++) * 10000)) % 256;

    //build colour
    var red = Math.round((rand_1 + baseRed) / 2);
    var green = Math.round((rand_2 + baseGreen) / 2);
    var blue = Math.round((rand_3 + baseBlue) / 2);

    return { red: red, green: green, blue: blue };
}

GIST在这里:https://gist.github.com/ro-sharp/49fd46a071a267d9e5dd

你真正需要的是一个好的哈希函数。在节点上，我只用

const crypto = require('crypto');
function strToColor(str) {
    return '#' + crypto.createHash('md5').update(str).digest('hex').substr(0, 6);
}