#55A7A9

CSS

:root {
  --twilight-meadow: #55a7a9;
  --twilight-meadow-rgb: 85 167 169;
  --twilight-meadow-oklch: oklch(0.678 0.08 197.5);
}

.element {
  color: var(--twilight-meadow);
  background-color: hsl(181 33% 50%);
  border-color: oklch(0.678 0.08 197.5);
}

Tailwind CSS v4

@theme {
  --color-twilight-meadow: #55a7a9;
  --color-twilight-meadow-50: #dcfdfe;
  --color-twilight-meadow-100: #caf1f2;
  --color-twilight-meadow-200: #addfe1;
  --color-twilight-meadow-300: #86c4c7;
  --color-twilight-meadow-400: #61adaf;
  --color-twilight-meadow-500: #369699;
  --color-twilight-meadow-600: #307f81;
  --color-twilight-meadow-700: #266667;
  --color-twilight-meadow-800: #1a4b4b;
  --color-twilight-meadow-900: #113434;
  --color-twilight-meadow-950: #031f20;
}

SCSS

$twilight-meadow: #55a7a9;
$twilight-meadow-rgb: 85, 167, 169;
$twilight-meadow-light: mix(#fff, $twilight-meadow, 20%);
$twilight-meadow-dark: mix(#000, $twilight-meadow, 20%);

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