#954300

CSS

:root {
  --otterly-brown: #954300;
  --otterly-brown-rgb: 149 67 0;
  --otterly-brown-oklch: oklch(0.482 0.128 49.6);
}

.element {
  color: var(--otterly-brown);
  background-color: hsl(27 100% 29%);
  border-color: oklch(0.482 0.128 49.6);
}

Tailwind CSS v4

@theme {
  --color-otterly-brown: #954300;
  --color-otterly-brown-50: #ffecd4;
  --color-otterly-brown-100: #ffddc1;
  --color-otterly-brown-200: #ffc5a2;
  --color-otterly-brown-300: #eca57a;
  --color-otterly-brown-400: #db8656;
  --color-otterly-brown-500: #c8682c;
  --color-otterly-brown-600: #a95927;
  --color-otterly-brown-700: #87471f;
  --color-otterly-brown-800: #653316;
  --color-otterly-brown-900: #47220e;
  --color-otterly-brown-950: #2e1102;
}

SCSS

$otterly-brown: #954300;
$otterly-brown-rgb: 149, 67, 0;
$otterly-brown-light: mix(#fff, $otterly-brown, 20%);
$otterly-brown-dark: mix(#000, $otterly-brown, 20%);

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