Sour

CSS

:root {
  --sour: #e5edb5;
  --sour-rgb: 229 237 181;
  --sour-oklch: oklch(0.926 0.073 114.5);
}

.element {
  color: var(--sour);
  background-color: hsl(69 61% 82%);
  border-color: oklch(0.926 0.073 114.5);
}

Tailwind CSS v4

@theme {
  --color-sour: #e5edb5;
  --color-sour-50: #f3f8e1;
  --color-sour-100: #e6ebd0;
  --color-sour-200: #d2d9b6;
  --color-sour-300: #b5bd92;
  --color-sour-400: #9da472;
  --color-sour-500: #858c52;
  --color-sour-600: #707646;
  --color-sour-700: #5a5f38;
  --color-sour-800: #434527;
  --color-sour-900: #2e301a;
  --color-sour-950: #1b1c0a;
}

SCSS

$sour: #e5edb5;
$sour-rgb: 229, 237, 181;
$sour-light: mix(#fff, $sour, 20%);
$sour-dark: mix(#000, $sour, 20%);

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