Color manipulation

HTML colors are specified with predefined color names, or with RGB, HEX, HSL, RGBA, or HSLA values ^[1].

RGBA colors

RGB(A) Colors: An RGB color value represents a color in the sRGB color space according to its RED, GREEN, and BLUE components. An optional alpha component represents the color's transparency ^[2][3][4].

Hex triplet: A hex triplet is a six-digit (or eight-digit) hexadecimal number used in HTML, CSS, SVG, and other computing applications to represent colors ^[5]. A hexadecimal color is specified with: #RRGGBB(AA) ^[6].

The RGBA class implements these colors.

HSLA colors

HSLA(A) Colors: HSLA stands for Hue, Saturation, Lightness, and Alpha. This color model extends the HSL format by incorporating transparency control through the alpha channel.^[7]

Named colors

HTML comes with 140 named colors. These are special keyword values like black, white, and cyan.These keywords all represent plain, solid colors without transparency ^{[8] [9]}. 139 of these colors (and two aliases NamedColor::CYAN and NamedColor::MAGENTA) are implemented in NamedColor Enum.

Color palette

The Palette is just an iterable container for color instances. It has an ability to create simple gradients using Palette::gradientBetween() method.