我有一个白色图像，我用作div的背景，我想要着色以匹配主题主色。我知道我能做到：
filter: sepia() saturate(10000%) hue-rotate(30deg);
并循环显示hue-rotate以查找颜色，但是可以提前计算此值吗？鉴于指定的十六进制值非常暗，我想我也需要包含invert(%)过滤器。
给定十六进制值#689d94我需要做什么数学计算所需的hue-rotate和invert值才能将我的白色背景图像转换为相同的颜色？
这里是div的片段，其中白色背景图片被过滤为绿色。这里的诀窍是，正在过滤的整个div，而不仅仅是图像。如果我要在div中输入一些文字，文字颜色也会变为绿色。
div {
background:url(http://richard.parnaby-king.co.uk/basket.svg) no-repeat scroll 0 0 transparent;
background-size:5em;
width:5em;
height:5em;
-webkit-filter: invert(25%) sepia() saturate(100000%) hue-rotate(174deg);
filter: invert(25%) sepia() saturate(100000%) hue-rotate(174deg);
}<div>
</div>
答案 0 :(得分：66)
这种情况下的关键是定义初始颜色。白色，黑色或任何灰度技术上都是实际颜色 - 您不能使其饱和或旋转。你必须着色＆＃34;着色＆＃34;不知何故，棕褐色过滤器是唯一可以进行某种形式着色的过滤器。
如果您的图像纯度为100％红色会更容易。然后你可以直接添加目标度，并使用HSL为目标调整饱和度和亮度。对于白色起点，第一步是转换和定义中间色，以便我们可以在以后饱和并旋转它。
让我们首先使白色图像变暗并使用棕褐色来获得一个＆＃34;基础＆＃34;我们可以使用的颜色：
filter: brightness(50%) sepia(1);
这将产生大约的RGB颜色值：
rgb(178, 160, 128)
第二步是convert that to HSL color-space，它给了我们：
hsl(38, 24.5%, 60%);
div {
background:url(http://richard.parnaby-king.co.uk/basket.svg) no-repeat;
background-size:5em;
width:5em;
height:5em;
-webkit-filter: brightness(50%) sepia(1);
filter: brightness(50%) sepia(1);
}<div></div>
这两个第一步是静态的，每次我们需要找到目标调整时都会重复使用它的结果（ sepia 的实际值在SVG Filters specification中定义）。
现在我们需要计算我们需要应用这种基色来获得目标颜色。首先将目标颜色（例如问题中给出的＃689d94）转换为HSL：
hsl(170, 21.3%, 51.2%);
然后我们必须计算它们之间的差异。通过简单地从目标中减去基数来计算色调。饱和度和亮度相同，但是当我们假设100％的基值时，我们需要从100％中减去结果，最后得到累积值的差值：
H: 170 - 38 -> 132°
S: 100 + (24.5 - 21.3) -> 103.2% (relative to base 100% = 3.2%)
L: 100 + (51.2 - 60.0) -> 91.2% (relative to base 100% = -8.8%)
将这些值转换为过滤字符串，方法是将其附加到现有过滤器，然后将其设置在div上：
/* ------ base color ------ ------- new target -------------------------------*/
filter: brightness(50%) sepia(1) hue-rotate(132deg) saturate(103.2%) brightness(91.2%);
设置它你可能会做这样的事情，假设已经声明了filter和divElement：
...
filter = "brightness(0.5) sepia(1) hue-rotate(132deg) saturate(103.2%) brightness(91.2%)";
divElement.style.filter = filter;
divElement.style.webkitFilter = filter;
请注意，可能存在舍入错误，因为RGB表示为整数，而HSL是浮点数，因此实际结果可能不准确，但它应该非常接近。
div {
background:url(http://richard.parnaby-king.co.uk/basket.svg) no-repeat;
background-size:5em;
width:5em;
height:5em;
-webkit-filter:
brightness(50%) sepia(1) hue-rotate(132deg) saturate(103.2%) brightness(91.2%);
filter:
brightness(50%) sepia(1) hue-rotate(132deg) saturate(103.2%) brightness(91.2%);
}<div></div>
<span style="font:14px sans-serif;padding:7px;color:#fff;background:#689d94">
Target color</span>
可行的替代选择是：
答案 1 :(得分：14)
接受的答案是错误的。色调旋转不能保持饱和度或亮度，你必须做疯狂的数学计算才能得出正确的值。更简单的方法 - 这将导致正确的结果 - 是做一个引用SVG过滤器的CSS过滤器。 SVG过滤器中的feColorMatrix原语允许您直接选择颜色 - 就像这样。取你的颜色＃424242 - 将每个颜色的十六进制值除以#FF（.257）并将它们放在第五列，即前三行的颜色矩阵中。像这样：
div {
background:url(http://richard.parnaby-king.co.uk/basket.svg) no-repeat scroll 0 0 transparent;
background-size:5em;
width:5em;
height:5em;
-webkit-filter: url(#colorize);
filter: url(#colorize);
}<div>
</div>
<svg>
<defs>
<filter id="colorize" color-interpolation-filters="sRGB">
<feColorMatrix type="matrix" values="0 0 0 0 .257
0 0 0 0 .257
0 0 0 0 .257
0 0 0 1 0"/>
/filter>
</defs>
</svg>
答案 2 :(得分：0)
如果正在使用svg那么......
您可以打开带有文本编辑器的svg文件并将其粘贴到html文件，然后根据需要更改路径颜色。
在下面的示例代码中......我只是改变了中心环的路径颜色。 希望这会有所帮助..
var imgg =document.getElementById("path");
imgg.style="fill:#424242";
<html>
<body>
<?xml version="1.0" encoding="iso-8859-1"?>
<!-- Generator: Adobe Illustrator 17.1.0, SVG Export Plug-In . SVG Version: 6.00 Build 0) -->
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
<svg id="imgg" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" id="Capa_1" x="0px" y="0px" viewBox="0 0 296.838 296.838" style="enable-background:new 0 0 296.838 296.838;" xml:space="preserve" width="512px" height="512px">
<g>
<path d="M58.733,64.566L41.763,47.596C14.832,74.526,0,110.333,0,148.419s14.832,73.893,41.763,100.823l16.971-16.971 C36.335,209.874,24,180.095,24,148.419S36.335,86.964,58.733,64.566z" fill="#91DC5A"/>
<path d="M82.137,81.969c-17.75,17.748-27.525,41.348-27.525,66.45s9.775,48.702,27.525,66.45l16.971-16.971 c-13.218-13.216-20.496-30.788-20.496-49.479s7.278-36.264,20.496-49.48L82.137,81.969z" fill="#91DC5A"/>
<path d="M255.075,47.596l-16.971,16.971c22.399,22.397,34.733,52.177,34.733,83.853s-12.335,61.455-34.733,83.852l16.971,16.971 c26.931-26.931,41.763-62.737,41.763-100.823S282.006,74.526,255.075,47.596z" fill="#91DC5A"/>
<path d="M214.701,81.969L197.73,98.939c13.218,13.216,20.496,30.788,20.496,49.48s-7.278,36.264-20.496,49.479l16.971,16.971 c17.75-17.748,27.525-41.348,27.525-66.45S232.451,99.717,214.701,81.969z" fill="#91DC5A"/>
<path id="path" d="M148.586,114.789c-8.607,0-17.212,3.284-23.78,9.851c-13.131,13.133-13.131,34.424,0,47.559 c6.568,6.566,15.174,9.851,23.78,9.851c8.606,0,17.212-3.284,23.779-9.851c13.131-13.135,13.131-34.426,0-47.559 C165.798,118.073,157.192,114.789,148.586,114.789z M155.395,155.228c-2.454,2.454-5.319,2.821-6.809,2.821 c-1.489,0-4.356-0.367-6.808-2.818c-3.755-3.756-3.755-9.867-0.003-13.619c2.455-2.455,5.321-2.822,6.811-2.822 c1.489,0,4.354,0.367,6.808,2.82C159.147,145.363,159.147,151.475,155.395,155.228z" fill="#91DC5A"/>
</g>
<g>
</g>
<g>
</g>
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</g>
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</g>
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</g>
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</g>
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</g>
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</g>
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</g>
<g>
</g>
<g>
</g>
<g>
</g>
</svg>
</body>
</html>
用于背景图片
var myimg='url(\'data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" id="Capa_1" x="0px" y="0px" viewBox="0 0 296.838 296.838" style="enable-background:new 0 0 296.838 296.838;" xml:space="preserve" width="512px" height="512px"><g><path d="M58.733,64.566L41.763,47.596C14.832,74.526,0,110.333,0,148.419s14.832,73.893,41.763,100.823l16.971-16.971 C36.335,209.874,24,180.095,24,148.419S36.335,86.964,58.733,64.566z" fill="#91DC5A"/><path d="M82.137,81.969c-17.75,17.748-27.525,41.348-27.525,66.45s9.775,48.702,27.525,66.45l16.971-16.971 c-13.218-13.216-20.496-30.788-20.496-49.479s7.278-36.264,20.496-49.48L82.137,81.969z" fill="#91DC5A"/><path d="M255.075,47.596l-16.971,16.971c22.399,22.397,34.733,52.177,34.733,83.853s-12.335,61.455-34.733,83.852l16.971,16.971 c26.931-26.931,41.763-62.737,41.763-100.823S282.006,74.526,255.075,47.596z" fill="#91DC5A"/><path d="M214.701,81.969L197.73,98.939c13.218,13.216,20.496,30.788,20.496,49.48s-7.278,36.264-20.496,49.479l16.971,16.971 c17.75-17.748,27.525-41.348,27.525-66.45S232.451,99.717,214.701,81.969z" fill="#91DC5A"/><path d="M148.586,114.789c-8.607,0-17.212,3.284-23.78,9.851c-13.131,13.133-13.131,34.424,0,47.559 c6.568,6.566,15.174,9.851,23.78,9.851c8.606,0,17.212-3.284,23.779-9.851c13.131-13.135,13.131-34.426,0-47.559 C165.798,118.073,157.192,114.789,148.586,114.789z M155.395,155.228c-2.454,2.454-5.319,2.821-6.809,2.821 c-1.489,0-4.356-0.367-6.808-2.818c-3.755-3.756-3.755-9.867-0.003-13.619c2.455-2.455,5.321-2.822,6.811-2.822 c1.489,0,4.354,0.367,6.808,2.82C159.147,145.363,159.147,151.475,155.395,155.228z" fill="#91DC5A"/></g><g></g><g></g><g></g><g></g><g></g><g></g><g></g><g></g><g></g><g></g><g></g><g></g><g></g><g></g><g></g></svg> \')';
document.getElementById("mydiv").style.backgroundImage =myimg ;
//changing color according to theme .. new theme color :#424242
myimg=myimg.replace(/#91DC5A/g,"#424242");
document.getElementById("mydiv").style.backgroundImage =myimg ; div {
background-size:5em;
width:5em;
height:5em;
}<html>
<body>
<div id="mydiv"></div>
<span style="font:14px sans-serif;padding:7px;color:#fff;background:#689d94">
Target color</span>
</body>
</html>