#E7705A

CSS

:root {
  --phoenix-red: #e7705a;
  --phoenix-red-rgb: 231 112 90;
  --phoenix-red-oklch: oklch(0.681 0.152 32);
}

.element {
  color: var(--phoenix-red);
  background-color: hsl(9 75% 63%);
  border-color: oklch(0.681 0.152 32);
}

Tailwind CSS v4

@theme {
  --color-phoenix-red: #e7705a;
  --color-phoenix-red-50: #ffe6d9;
  --color-phoenix-red-100: #ffd6c7;
  --color-phoenix-red-200: #ffbda9;
  --color-phoenix-red-300: #fb9a83;
  --color-phoenix-red-400: #ea7963;
  --color-phoenix-red-500: #d85740;
  --color-phoenix-red-600: #b64a37;
  --color-phoenix-red-700: #933b2c;
  --color-phoenix-red-800: #6e2a20;
  --color-phoenix-red-900: #4d1c15;
  --color-phoenix-red-950: #330b07;
}

SCSS

$phoenix-red: #e7705a;
$phoenix-red-rgb: 231, 112, 90;
$phoenix-red-light: mix(#fff, $phoenix-red, 20%);
$phoenix-red-dark: mix(#000, $phoenix-red, 20%);

.element {
  color: $phoenix-red;
  box-shadow: 0 0 0 2px rgba($phoenix-red, 0.35);
}