#D69200

CSS

:root {
  --end-of-summer: #d69200;
  --end-of-summer-rgb: 214 146 0;
  --end-of-summer-oklch: oklch(0.71 0.149 75.8);
}

.element {
  color: var(--end-of-summer);
  background-color: hsl(41 100% 42%);
  border-color: oklch(0.71 0.149 75.8);
}

Tailwind CSS v4

@theme {
  --color-end-of-summer: #d69200;
  --color-end-of-summer-50: #fff1c6;
  --color-end-of-summer-100: #ffe2b0;
  --color-end-of-summer-200: #f8cd8a;
  --color-end-of-summer-300: #e1ad58;
  --color-end-of-summer-400: #d09018;
  --color-end-of-summer-500: #bd7400;
  --color-end-of-summer-600: #a06200;
  --color-end-of-summer-700: #804f00;
  --color-end-of-summer-800: #603800;
  --color-end-of-summer-900: #432600;
  --color-end-of-summer-950: #2b1400;
}

SCSS

$end-of-summer: #d69200;
$end-of-summer-rgb: 214, 146, 0;
$end-of-summer-light: mix(#fff, $end-of-summer, 20%);
$end-of-summer-dark: mix(#000, $end-of-summer, 20%);

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