#A2C9B4

CSS

:root {
  --gum-leaf: #a2c9b4;
  --gum-leaf-rgb: 162 201 180;
  --gum-leaf-oklch: oklch(0.802 0.051 161.5);
}

.element {
  color: var(--gum-leaf);
  background-color: hsl(148 27% 71%);
  border-color: oklch(0.802 0.051 161.5);
}

Tailwind CSS v4

@theme {
  --color-gum-leaf: #a2c9b4;
  --color-gum-leaf-50: #e9faf1;
  --color-gum-leaf-100: #d9eee3;
  --color-gum-leaf-200: #c2dbce;
  --color-gum-leaf-300: #a1c0b0;
  --color-gum-leaf-400: #84a895;
  --color-gum-leaf-500: #68917c;
  --color-gum-leaf-600: #587b69;
  --color-gum-leaf-700: #466254;
  --color-gum-leaf-800: #33483c;
  --color-gum-leaf-900: #233229;
  --color-gum-leaf-950: #121e17;
}

SCSS

$gum-leaf: #a2c9b4;
$gum-leaf-rgb: 162, 201, 180;
$gum-leaf-light: mix(#fff, $gum-leaf, 20%);
$gum-leaf-dark: mix(#000, $gum-leaf, 20%);

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