确定HSL变化以在另一个颜色中转换一个颜色

Question

我使用的更少，我想利用各种集成的颜色功能，允许设置只有少数基本颜色，然后派生其他改变色调，饱和度，明度，旋转，ECC。

让我们假设在我的着色器中有以下两种颜色（本例中为浅绿色和深绿色）：

@primary-color:    rgb(0,100,60);
@secondary-color:  rgb(185,215,50); 

附注：如果有必要，也可以借助Photoshop等外部工具。

Answer 1

下面是计算两种颜色的色调、饱和度和明度值之间的差值，然后用它来计算基于第一种颜色的第二种颜色。

具体步骤如下：

• 色差计算：使用色调()、饱和度()和亮度()函数计算两种给定颜色之间的色调、饱和度和亮度差异。此函数可以单独使用，仅用于单独输出差异。
• 基于原色得到次生色：这是一个三步过程，它们如下：
  • 通过传递两种颜色之间的色相差，使用spin()函数调整原色的色相
  • 根据差异使用saturate()或desaturate()函数调整色调调整后的颜色的饱和度（从上一步开始）。
  • 根据差异使用darken()或lighten()函数调整饱和度调整颜色的亮度（从上一步开始）。

  @primary: rgb(0,100,60); /* primary color */
  @secondary: rgb(185,215,50); /* secondary color */
  
  /* mixin to calculate the difference between two given colors */
  .color-diff(@color1; @color2){ 
      @hueDiff: hue(@color2) - hue(@color1);
      @saturationDiff: saturation(@color1) - saturation(@color2);
      @lightnessDiff: lightness(@color1)- lightness(@color2);
  
      color1: @color1; color2:@color2; /* just for testing, can be removed */
  }
  
  /* Step 1: mixin to adjust the hue difference between the colors */
  .adjust-hue(@color; @diff){ 
      @hueAdjusted: spin(@color, @hueDiff);
  }
  
  /* Step 2: mixin to adjust the saturation difference */
  .adjust-saturation(@color; @diff) when (@diff > 0){
      @satAdjusted: desaturate(@color, abs(@diff)); /* desaturate if diff is greater than 0 */
  }
  .adjust-saturation(@color; @diff) when not (@diff > 0){
      @satAdjusted: saturate(@color, abs(@diff)); /* saturate if diff is not greater than 0 */
  }
  
  /* Step 3: mixin to adjust the lightness diff between the colors */
  .adjust-lightness(@color; @diff) when (@diff > 0){
      @lightnessAdjusted: darken(@color, abs(@diff)); /* darken if diff is greater than 0 */
  }
  .adjust-lightness(@color; @diff) when not (@diff > 0){
      @lightnessAdjusted: lighten(@color, abs(@diff)); /* else lighten */
  }
  
  div{
      .color-diff(@primary; @secondary);
      .adjust-hue(@primary; @hueDiff);
      .adjust-saturation(@hueAdjusted; @saturationDiff);
      .adjust-lightness(@satAdjusted; @lightnessDiff);
      color: @lightnessAdjusted; /* final output value */
  }
  

  div {
      color1: #00643c;
      color2: #b9d732;
      color: #b9d732;
  }
  

  @color-list-1: rgb(0,100,60), #B0BCA7, #ABCDEF; /* list of primary colors */
  @color-list-2: rgb(185,215,50), #BADA55, #FEDCBA; /* list of secondary colors */
  
  #output{
      .loop-colors(@index) when (@index > 0){
          @primary: extract(@color-list-1, @index);
          @secondary: extract(@color-list-2, @index);
          .color-diff(@primary; @secondary);
  
          /* output the values of the comparison */
          color-comparison-@{index}+: ~"Hue Difference: @{hueDiff}";
          color-comparison-@{index}+: ~"Saturation Difference: @{saturationDiff}";        
          color-comparison-@{index}+: ~"Lightness Difference: @{lightnessDiff}";
          .loop-colors(@index - 1);
      }
      .loop-colors(length(@color-list-1));
  }
  

  上面的代码将比较两个列表中对应的值，并输出它们的差异，如下所示：

  #output {
    color-comparison-3: Hue Difference: -180, Saturation Difference: -29.142857142857153%, Lightness Difference: -5.882352941176478%;
    color-comparison-2: Hue Difference: -19.849624060150404, Saturation Difference: -50.70282063269439%, Lightness Difference: 10.196078431372548%;
    color-comparison-1: Hue Difference: -85.09090909090908, Saturation Difference: 32.65306122448979%, Lightness Difference: -32.352941176470594%;
  }