#00857A

CSS

:root {
  --go-go-green: #00857a;
  --go-go-green-rgb: 0 133 122;
  --go-go-green-oklch: oklch(0.554 0.098 184.7);
}

.element {
  color: var(--go-go-green);
  background-color: hsl(175 100% 26%);
  border-color: oklch(0.554 0.098 184.7);
}

Tailwind CSS v4

@theme {
  --color-go-go-green: #00857a;
  --color-go-go-green-50: #d7fffa;
  --color-go-go-green-100: #c4f3ed;
  --color-go-go-green-200: #a4e2db;
  --color-go-go-green-300: #7ac8bf;
  --color-go-go-green-400: #50b1a6;
  --color-go-go-green-500: #0c9b8e;
  --color-go-go-green-600: #138378;
  --color-go-go-green-700: #116960;
  --color-go-go-green-800: #0b4d45;
  --color-go-go-green-900: #073630;
  --color-go-go-green-950: #00211c;
}

SCSS

$go-go-green: #00857a;
$go-go-green-rgb: 0, 133, 122;
$go-go-green-light: mix(#fff, $go-go-green, 20%);
$go-go-green-dark: mix(#000, $go-go-green, 20%);

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