转换为 HSV 以更改亮度
请参阅 jsFiddle 上的完整代码示例 http://jsfiddle.net/K8cMX/7/
该版本使用HSV
。我把原来的转换一下rgb
价值hsv
并改变值v
以获得更浅的颜色。我有RgbToHsv https://stackoverflow.com/questions/2348597/why-doesnt-this-javascript-rgb-to-hsl-code-work/2348659#2348659从尖尖的答案中,我刚刚添加了一些灰色修复。我得到了HsvToRgb在这个网站上 http://www.csgnetwork.com/csgcolorsel4.html
当页面加载时我得到rgb
转换成hsv
改变v
值,转换回rgb
并改变css
具有新值的元素。
function AppendColor(light) {
$(".dark").each(function(i){
// get the RGB from existing elements
var color = $(this).css("background-color");
color = color.replace(/[^0-9,]+/g, "");
var red = color.split(",")[0];
var gre = color.split(",")[1];
var blu = color.split(",")[2];
// convert rgb to hsv
var hsv = RgbToHsv(red,gre,blu);
// convert hsv to rgb modifing the `v` param
var rgb = HsvToRgb(hsv.h, hsv.s, light);
// creates a new div and set the new background
// then appends to the content
color = "rgb(" + rgb.r + "," + rgb.g + "," + rgb.b + ")";
$("<div />")
.css("background", color)
.attr("title", color)
.appendTo($(".light").parent());
$("<span />").html(" ").appendTo($(".light").parent())
});
$("<br />").appendTo($(".light").parent())
}
// tested values
AppendColor(25);
AppendColor(50);
AppendColor(75);
AppendColor(90);
AppendColor(95);
AppendColor(97);
AppendColor(99);
AppendColor(100);
Result:
按最高颜色增加颜色值
请参阅 jsFiddle 上的此示例 http://jsfiddle.net/K8cMX/2/
The divs
顶部代表深色(rgb)#801A00
, #00801A
, #1A0080
and #D2D2D2
<div id="red" class="dark red"></div>
<div id="green" class="dark green"></div>
<div id="blue" class="dark blue"></div>
<div id="gray" class="dark gray"></div>
<br />
<div id="lred" class="lred"></div>
<div id="lgreen" class="lgreen"></div>
<div id="lblue" class="lblue"></div>
<div id="lgray" class="lgray"></div>
The divs
底部将从黑暗中获得浅色。
当我单击一个深色 div 时,它将检索background-color
,拆分值并发送到函数Lighthen
。此功能将使颜色更浅。
function Lighthen(red, green, blue)
{
var max = ([red,green,blue].sort(function(l,r){return r-l}))[0];
var multiplier = max;
multiplier = (multiplier / 255) + 1;
// if it would still be too dark, make it lighten more
if (multiplier < 1.5) multiplier = 1.9;
// if it gets to white, move away a bit
if ((max * multiplier) > 255)
{
multiplier = (multiplier / 230) + 1;
}
var r = Math.round(red * multiplier);
var g = Math.round(green * multiplier);
var b = Math.round(blue * multiplier);
if (r > 255) r = 255;
if (g > 255) g = 255;
if (b > 255) b = 255;
return "rgb(" + r + "," + g + "," + b + ")";
}
当点击深色div时,会计算新的颜色并在相应的位置上更改div
.
$(".dark").click(function(){
var color = $(this).css("background-color");
color = color.replace(/[^0-9,]+/g, "");
var red = color.split(",")[0];
var gre = color.split(",")[1];
var blu = color.split(",")[2];
$("#l" + $(this).attr("id"))
.css("background", Lighthen(red, gre, blu));
});
导致