Colours–颜色库,包含100种预定义的颜色和方法

pod 'Colours'

#import "Colours.h"

[UIColor indigoColor]; // indigoColor是Colours预定义的一种颜色.

UIColor *newColor = [UIColor colorFromHexString:@"#f587e4"];
NSString *hexString = [newColor hexString];

NSArray *colorArray = [[UIColor seafoamColor] rgbaArray];// 数组中存储四个NSNumber对象分别代表RGBA的四个值,取值范围 0-1.
UIColor *newColor = [UIColor colorFromRGBAArray:colorArray];

NSDictionary *colorDict = [[UIColor seafoamColor] rgbaDictionary];
UIColor *newColor = [UIColor colorFromRGBADictionary:colorDict];

// 你可以获取某个单独的值:
NSNumber *r = colorDict[kColoursRGBA_R];

NSArray *colorArray = [[UIColor seafoamColor] hsbaArray];// 数组中存储四个NSNumber,分别代表H(色调),S(色饱和度),B(亮度),A(透明度)的值.
NSDictionary *colorDict = [[UIColor seafoamColor] hsbaDictionary];

NSArray *colorArray = [[UIColor seafoamColor] hsbaArray];
NSDictionary *colorDict = [[UIColor seafoamColor] hsbaDictionary];

UIColor *newColor1 = [UIColor colorFromHSBAArray:colorArray];
UIColor *newColor2 = [UIColor colorFromHSBADictionary:colorDictionary];

NSArray *colorArray = [[UIColor seafoamColor] CIE_LabArray];
NSDictionary *colorDict = [[UIColor seafoamColor] CIE_LabDictionary];

UIColor *newColor1 = [UIColor colorFromCIE_LabArray:colorArray];
UIColor *newColor2 = [UIColor colorFromCIE_LabDictionary:colorDictionary];

NSArray *colorArray = [[UIColor seafoamColor] cmykArray];
NSDictionary *colorDict = [[UIColor seafoamColor] cmykDictionary];

UIColor *newColor1 = [UIColor colorFromCMYKArray:colorArray];
UIColor *newColor2 = [UIColor colorFromCMYKDictionary:colorDictionary];

NSDictionary *components = [someColor colorComponents];
CGFloat H = components[kColoursHSBA_H];
CGFloat L = components[kColoursCIE_L];

CGFloat R = [[UIColor tomatoColor] red];
CGFloat G = [[UIColor tomatoColor] green];
CGFloat B = [[UIColor tomatoColor] blue];
CGFloat H = [[UIColor tomatoColor] hue];
CGFloat S = [[UIColor tomatoColor] saturation];
CGFloat B = [[UIColor tomatoColor] brightness];
CGFloat CIE_L = [[UIColor tomatoColor] CIE_Lightness];
CGFloat CIE_A = [[UIColor tomatoColor] CIE_a];
CGFloat CIE_B = [[UIColor tomatoColor] CIE_b];
CGFloat alpha = [[UIColor tomatoColor] alpha];

// 取值范围 0->1
UIColor *lighterColor = [[UIColor seafoamColor] lighten:0.25f];
UIColor *darkerColor = [[UIColor seafoamColor] darken:0.25f];

// 根据给定的颜色,自动与之能形成对比色的黑色或白色.
UIColor *contrastingColor = [[UIColor seafoamColor] blackOrWhiteContrastingColor];

// 返回一个给定颜色的互补色:色调改变,色调和饱和度不变.
UIColor *complementary = [[UIColor seafoamColor] complementaryColor];

// 此处的差别,综合考虑了人的感官,数学统计算法等,不是一般的RGB差值.
CGFloat distance = [someColor distanceFromColor:someOtherColor type:ColorDistanceCIE94];
BOOL isNoticablySimilar = distance < threshold;

NSArray *colorScheme = [color colorSchemeOfType:ColorSchemeType];