#63A890

CSS

:root {
  --hole-in-one: #63a890;
  --hole-in-one-rgb: 99 168 144;
  --hole-in-one-oklch: oklch(0.679 0.079 169.6);
}

.element {
  color: var(--hole-in-one);
  background-color: hsl(159 28% 52%);
  border-color: oklch(0.679 0.079 169.6);
}

Tailwind CSS v4

@theme {
  --color-hole-in-one: #63a890;
  --color-hole-in-one-50: #e0fdf2;
  --color-hole-in-one-100: #cef1e5;
  --color-hole-in-one-200: #b3e0d0;
  --color-hole-in-one-300: #8ec5b2;
  --color-hole-in-one-400: #6dae97;
  --color-hole-in-one-500: #49977e;
  --color-hole-in-one-600: #3f806a;
  --color-hole-in-one-700: #326655;
  --color-hole-in-one-800: #244b3d;
  --color-hole-in-one-900: #18342a;
  --color-hole-in-one-950: #082017;
}

SCSS

$hole-in-one: #63a890;
$hole-in-one-rgb: 99, 168, 144;
$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);
}