#E7F1D0

CSS

:root {
  --race-the-sun: #e7f1d0;
  --race-the-sun-rgb: 231 241 208;
  --race-the-sun-oklch: oklch(0.942 0.045 121);
}

.element {
  color: var(--race-the-sun);
  background-color: hsl(78 54% 88%);
  border-color: oklch(0.942 0.045 121);
}

Tailwind CSS v4

@theme {
  --color-race-the-sun: #e7f1d0;
  --color-race-the-sun-50: #f2f7ea;
  --color-race-the-sun-100: #e5ebda;
  --color-race-the-sun-200: #d0d8c3;
  --color-race-the-sun-300: #b3bca3;
  --color-race-the-sun-400: #9aa386;
  --color-race-the-sun-500: #818b6a;
  --color-race-the-sun-600: #6e765a;
  --color-race-the-sun-700: #585e48;
  --color-race-the-sun-800: #404533;
  --color-race-the-sun-900: #2c3023;
  --color-race-the-sun-950: #1a1c12;
}

SCSS

$race-the-sun: #e7f1d0;
$race-the-sun-rgb: 231, 241, 208;
$race-the-sun-light: mix(#fff, $race-the-sun, 20%);
$race-the-sun-dark: mix(#000, $race-the-sun, 20%);

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