Blue Shoal

CSS

:root {
  --blue-shoal: #6b8c93;
  --blue-shoal-rgb: 107 140 147;
  --blue-shoal-oklch: oklch(0.618 0.038 212.1);
}

.element {
  color: var(--blue-shoal);
  background-color: hsl(190 16% 50%);
  border-color: oklch(0.618 0.038 212.1);
}

Tailwind CSS v4

@theme {
  --color-blue-shoal: #6b8c93;
  --color-blue-shoal-50: #e9f8fc;
  --color-blue-shoal-100: #daecf0;
  --color-blue-shoal-200: #c3d9de;
  --color-blue-shoal-300: #a2bdc3;
  --color-blue-shoal-400: #85a5ac;
  --color-blue-shoal-500: #698d95;
  --color-blue-shoal-600: #59787e;
  --color-blue-shoal-700: #476065;
  --color-blue-shoal-800: #33464a;
  --color-blue-shoal-900: #233133;
  --color-blue-shoal-950: #121d1f;
}

SCSS

$blue-shoal: #6b8c93;
$blue-shoal-rgb: 107, 140, 147;
$blue-shoal-light: mix(#fff, $blue-shoal, 20%);
$blue-shoal-dark: mix(#000, $blue-shoal, 20%);

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