#4D7E70

CSS

:root {
  --turquoise-tortoise: #4d7e70;
  --turquoise-tortoise-rgb: 77 126 112;
  --turquoise-tortoise-oklch: oklch(0.554 0.058 174);
}

.element {
  color: var(--turquoise-tortoise);
  background-color: hsl(163 24% 40%);
  border-color: oklch(0.554 0.058 174);
}

Tailwind CSS v4

@theme {
  --color-turquoise-tortoise: #4d7e70;
  --color-turquoise-tortoise-50: #e5fbf4;
  --color-turquoise-tortoise-100: #d5efe7;
  --color-turquoise-tortoise-200: #bbddd3;
  --color-turquoise-tortoise-300: #99c2b6;
  --color-turquoise-tortoise-400: #7baa9c;
  --color-turquoise-tortoise-500: #5c9383;
  --color-turquoise-tortoise-600: #4e7c6f;
  --color-turquoise-tortoise-700: #3e6459;
  --color-turquoise-tortoise-800: #2d4940;
  --color-turquoise-tortoise-900: #1e332c;
  --color-turquoise-tortoise-950: #0e1e19;
}

SCSS

$turquoise-tortoise: #4d7e70;
$turquoise-tortoise-rgb: 77, 126, 112;
$turquoise-tortoise-light: mix(#fff, $turquoise-tortoise, 20%);
$turquoise-tortoise-dark: mix(#000, $turquoise-tortoise, 20%);

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