#51AA90

CSS

:root {
  --hole-in-one: #51aa90;
  --hole-in-one-rgb: 81 170 144;
  --hole-in-one-oklch: oklch(0.676 0.095 171.8);
}

.element {
  color: var(--hole-in-one);
  background-color: hsl(162 35% 49%);
  border-color: oklch(0.676 0.095 171.8);
}

Tailwind CSS v4

@theme {
  --color-hole-in-one: #51aa90;
  --color-hole-in-one-50: #dbfff3;
  --color-hole-in-one-100: #c8f3e5;
  --color-hole-in-one-200: #abe2d1;
  --color-hole-in-one-300: #83c8b3;
  --color-hole-in-one-400: #5eb198;
  --color-hole-in-one-500: #319a7f;
  --color-hole-in-one-600: #2c826b;
  --color-hole-in-one-700: #236956;
  --color-hole-in-one-800: #194d3d;
  --color-hole-in-one-900: #10352a;
  --color-hole-in-one-950: #032018;
}

SCSS

$hole-in-one: #51aa90;
$hole-in-one-rgb: 81, 170, 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);
}