您可以在任何色相背景上有任何色相文本，并确保它是易读的。我一直都这么做。在Javascript中有一个关于可读的彩色文本的公式- STW* 正如它在那个链接上所说的那样，这个公式是逆伽马调整计算的变化，尽管IMHO更易于管理。 该链接右侧的菜单及其相关页面使用随机生成的颜色作为文本和背景，始终清晰可辨。所以，是的，显然这是可以做到的，没有问题。

丑陋的Python，如果你不想写它:)

'''
Input a string without hash sign of RGB hex digits to compute
complementary contrasting color such as for fonts
'''
def contrasting_text_color(hex_str):
    (r, g, b) = (hex_str[:2], hex_str[2:4], hex_str[4:])
    return '000' if 1 - (int(r, 16) * 0.299 + int(g, 16) * 0.587 + int(b, 16) * 0.114) / 255 < 0.5 else 'fff'

颤振实现

Color contrastColor(Color color) {
  if (color == Colors.transparent || color.alpha < 50) {
    return Colors.black;
  }
  double luminance = (0.299 * color.red + 0.587 * color.green + 0.114 * color.blue) / 255;
  return luminance > 0.5 ? Colors.black : Colors.white;
}

请注意，在谷歌闭包库中有一个算法，该算法引用了w3c推荐:http://www.w3.org/TR/AERT#color-contrast。但是，在这个API中，您提供了一个建议颜色列表作为起点。

/**
 * Find the "best" (highest-contrast) of the suggested colors for the prime
 * color. Uses W3C formula for judging readability and visual accessibility:
 * http://www.w3.org/TR/AERT#color-contrast
 * @param {goog.color.Rgb} prime Color represented as a rgb array.
 * @param {Array<goog.color.Rgb>} suggestions Array of colors,
 *     each representing a rgb array.
 * @return {!goog.color.Rgb} Highest-contrast color represented by an array.
 */
goog.color.highContrast = function(prime, suggestions) {
  var suggestionsWithDiff = [];
  for (var i = 0; i < suggestions.length; i++) {
    suggestionsWithDiff.push({
      color: suggestions[i],
      diff: goog.color.yiqBrightnessDiff_(suggestions[i], prime) +
          goog.color.colorDiff_(suggestions[i], prime)
    });
  }
  suggestionsWithDiff.sort(function(a, b) { return b.diff - a.diff; });
  return suggestionsWithDiff[0].color;
};


/**
 * Calculate brightness of a color according to YIQ formula (brightness is Y).
 * More info on YIQ here: http://en.wikipedia.org/wiki/YIQ. Helper method for
 * goog.color.highContrast()
 * @param {goog.color.Rgb} rgb Color represented by a rgb array.
 * @return {number} brightness (Y).
 * @private
 */
goog.color.yiqBrightness_ = function(rgb) {
  return Math.round((rgb[0] * 299 + rgb[1] * 587 + rgb[2] * 114) / 1000);
};


/**
 * Calculate difference in brightness of two colors. Helper method for
 * goog.color.highContrast()
 * @param {goog.color.Rgb} rgb1 Color represented by a rgb array.
 * @param {goog.color.Rgb} rgb2 Color represented by a rgb array.
 * @return {number} Brightness difference.
 * @private
 */
goog.color.yiqBrightnessDiff_ = function(rgb1, rgb2) {
  return Math.abs(
      goog.color.yiqBrightness_(rgb1) - goog.color.yiqBrightness_(rgb2));
};


/**
 * Calculate color difference between two colors. Helper method for
 * goog.color.highContrast()
 * @param {goog.color.Rgb} rgb1 Color represented by a rgb array.
 * @param {goog.color.Rgb} rgb2 Color represented by a rgb array.
 * @return {number} Color difference.
 * @private
 */
goog.color.colorDiff_ = function(rgb1, rgb2) {
  return Math.abs(rgb1[0] - rgb2[0]) + Math.abs(rgb1[1] - rgb2[1]) +
      Math.abs(rgb1[2] - rgb2[2]);
};

objective-c的实现

+ (UIColor*) getContrastColor:(UIColor*) color {
    CGFloat red, green, blue, alpha;
    [color getRed:&red green:&green blue:&blue alpha:&alpha];
    double a = ( 0.299 * red + 0.587 * green + 0.114 * blue);
    return (a > 0.5) ? [[UIColor alloc]initWithRed:0 green:0 blue:0 alpha:1] : [[UIColor alloc]initWithRed:255 green:255 blue:255 alpha:1];
}

这是一个非常有用的答案。谢谢!

我想分享一个SCSS版本:

@function is-color-light( $color ) {

  // Get the components of the specified color
  $red: red( $color );
  $green: green( $color );
  $blue: blue( $color );

  // Compute the perceptive luminance, keeping
  // in mind that the human eye favors green.
  $l: 1 - ( 0.299 * $red + 0.587 * $green + 0.114 * $blue ) / 255;
  @return ( $l < 0.5 );

}

现在弄清楚如何使用算法来自动创建菜单链接的悬停颜色。浅标题的悬停颜色较深，反之亦然。