#D1472A

CSS

:root {
  --peanut-butter-jelly: #d1472a;
  --peanut-butter-jelly-rgb: 209 71 42;
  --peanut-butter-jelly-oklch: oklch(0.587 0.179 33.6);
}

.element {
  color: var(--peanut-butter-jelly);
  background-color: hsl(10 67% 49%);
  border-color: oklch(0.587 0.179 33.6);
}

Tailwind CSS v4

@theme {
  --color-peanut-butter-jelly: #d1472a;
  --color-peanut-butter-jelly-50: #ffe4d2;
  --color-peanut-butter-jelly-100: #ffd3bf;
  --color-peanut-butter-jelly-200: #ffb89f;
  --color-peanut-butter-jelly-300: #ff9476;
  --color-peanut-butter-jelly-400: #f57053;
  --color-peanut-butter-jelly-500: #e44928;
  --color-peanut-butter-jelly-600: #c03f24;
  --color-peanut-butter-jelly-700: #9b321c;
  --color-peanut-butter-jelly-800: #742316;
  --color-peanut-butter-jelly-900: #52170e;
  --color-peanut-butter-jelly-950: #360702;
}

SCSS

$peanut-butter-jelly: #d1472a;
$peanut-butter-jelly-rgb: 209, 71, 42;
$peanut-butter-jelly-light: mix(#fff, $peanut-butter-jelly, 20%);
$peanut-butter-jelly-dark: mix(#000, $peanut-butter-jelly, 20%);

.element {
  color: $peanut-butter-jelly;
  box-shadow: 0 0 0 2px rgba($peanut-butter-jelly, 0.35);
}