#642F28

CSS

:root {
  --kenyan-copper: #642f28;
  --kenyan-copper-rgb: 100 47 40;
  --kenyan-copper-oklch: oklch(0.375 0.078 29);
}

.element {
  color: var(--kenyan-copper);
  background-color: hsl(7 43% 27%);
  border-color: oklch(0.375 0.078 29);
}

Tailwind CSS v4

@theme {
  --color-kenyan-copper: #642f28;
  --color-kenyan-copper-50: #ffeee8;
  --color-kenyan-copper-100: #ffdfd8;
  --color-kenyan-copper-200: #f4c9c0;
  --color-kenyan-copper-300: #dda99f;
  --color-kenyan-copper-400: #c98d84;
  --color-kenyan-copper-500: #b47268;
  --color-kenyan-copper-600: #986158;
  --color-kenyan-copper-700: #7a4d46;
  --color-kenyan-copper-800: #5b3834;
  --color-kenyan-copper-900: #3f2623;
  --color-kenyan-copper-950: #281412;
}

SCSS

$kenyan-copper: #642f28;
$kenyan-copper-rgb: 100, 47, 40;
$kenyan-copper-light: mix(#fff, $kenyan-copper, 20%);
$kenyan-copper-dark: mix(#000, $kenyan-copper, 20%);

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