Colour Format Converter

:root {
  --colour: #4F46E5FF;
  --colour-rgb: 79 70 229;
}

.thing {
  color: #4F46E5;
  background: oklch(0.5106 0.2301 276.97);
}

$colour: #4F46E5;
$colour-alpha: rgba(79, 70, 229, 1);
$colour-hsl: hsl(243.4, 75.4%, 58.6%);

// tailwind.config.js
module.exports = {
  theme: {
    extend: {
      colors: {
        brand: {
          DEFAULT: "#4F46E5",
          rgb: "rgb(79 70 229 / <alpha-value>)",
        },
      },
    },
  },
};

<!-- res/values/colors.xml -->
<color name="brand">#FF4F46E5</color>

UIColor *brand = [UIColor colorWithRed:0.3098 green:0.2745 blue:0.898 alpha:1];

extension Color {
    static let brand = Color(red: 0.3098, green: 0.2745, blue: 0.898, opacity: 1)
    // or: Color(hex: 0x4F46E5)

const Color brand = Color(0xFF4F46E5);
// MaterialColor
const MaterialColor brandSwatch = MaterialColor(0x4F46E5, <int, Color>{ 500: Color(0x4F46E5) });

Color brand = new Color(79, 70, 229, 255);
// or
Color decode = Color.decode("#4F46E5");