Era

CSS

:root {
  --era: #d7e3e5;
  --era-rgb: 215 227 229;
  --era-oklch: oklch(0.907 0.013 208.8);
}

.element {
  color: var(--era);
  background-color: hsl(189 21% 87%);
  border-color: oklch(0.907 0.013 208.8);
}

Tailwind CSS v4

@theme {
  --color-era: #d7e3e5;
  --color-era-50: #f1f6f7;
  --color-era-100: #e3e9ea;
  --color-era-200: #ced6d7;
  --color-era-300: #b0b9bb;
  --color-era-400: #96a1a2;
  --color-era-500: #7d898b;
  --color-era-600: #6a7475;
  --color-era-700: #545d5e;
  --color-era-800: #3d4445;
  --color-era-900: #2a2f2f;
  --color-era-950: #181b1c;
}

SCSS

$era: #d7e3e5;
$era-rgb: 215, 227, 229;
$era-light: mix(#fff, $era, 20%);
$era-dark: mix(#000, $era, 20%);

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