#5CA6A9

CSS

:root {
  --twilight-meadow: #5ca6a9;
  --twilight-meadow-rgb: 92 166 169;
  --twilight-meadow-oklch: oklch(0.679 0.074 199);
}

.element {
  color: var(--twilight-meadow);
  background-color: hsl(182 31% 51%);
  border-color: oklch(0.679 0.074 199);
}

Tailwind CSS v4

@theme {
  --color-twilight-meadow: #5ca6a9;
  --color-twilight-meadow-50: #defcfe;
  --color-twilight-meadow-100: #ccf0f2;
  --color-twilight-meadow-200: #b0dee1;
  --color-twilight-meadow-300: #8ac3c7;
  --color-twilight-meadow-400: #67acaf;
  --color-twilight-meadow-500: #409599;
  --color-twilight-meadow-600: #387e81;
  --color-twilight-meadow-700: #2c6567;
  --color-twilight-meadow-800: #1f4a4b;
  --color-twilight-meadow-900: #143434;
  --color-twilight-meadow-950: #051f20;
}

SCSS

$twilight-meadow: #5ca6a9;
$twilight-meadow-rgb: 92, 166, 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);
}