#5AA991

CSS

:root {
  --hole-in-one: #5aa991;
  --hole-in-one-rgb: 90 169 145;
  --hole-in-one-oklch: oklch(0.677 0.087 171.7);
}

.element {
  color: var(--hole-in-one);
  background-color: hsl(162 31% 51%);
  border-color: oklch(0.677 0.087 171.7);
}

Tailwind CSS v4

@theme {
  --color-hole-in-one: #5aa991;
  --color-hole-in-one-50: #ddfef3;
  --color-hole-in-one-100: #cbf2e5;
  --color-hole-in-one-200: #afe1d1;
  --color-hole-in-one-300: #88c6b4;
  --color-hole-in-one-400: #65af98;
  --color-hole-in-one-500: #3e997f;
  --color-hole-in-one-600: #36816c;
  --color-hole-in-one-700: #2b6756;
  --color-hole-in-one-800: #1e4c3e;
  --color-hole-in-one-900: #14352a;
  --color-hole-in-one-950: #052018;
}

SCSS

$hole-in-one: #5aa991;
$hole-in-one-rgb: 90, 169, 145;
$hole-in-one-light: mix(#fff, $hole-in-one, 20%);
$hole-in-one-dark: mix(#000, $hole-in-one, 20%);

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