Gould Blue

CSS

:root {
  --gould-blue: #7d9ea2;
  --gould-blue-rgb: 125 158 162;
  --gould-blue-oklch: oklch(0.676 0.037 205.5);
}

.element {
  color: var(--gould-blue);
  background-color: hsl(186 17% 56%);
  border-color: oklch(0.676 0.037 205.5);
}

Tailwind CSS v4

@theme {
  --color-gould-blue: #7d9ea2;
  --color-gould-blue-50: #eaf8fb;
  --color-gould-blue-100: #dbecee;
  --color-gould-blue-200: #c3d9dc;
  --color-gould-blue-300: #a2bdc1;
  --color-gould-blue-400: #86a5a9;
  --color-gould-blue-500: #6a8e92;
  --color-gould-blue-600: #5a787b;
  --color-gould-blue-700: #476063;
  --color-gould-blue-800: #334648;
  --color-gould-blue-900: #233132;
  --color-gould-blue-950: #121d1e;
}

SCSS

$gould-blue: #7d9ea2;
$gould-blue-rgb: 125, 158, 162;
$gould-blue-light: mix(#fff, $gould-blue, 20%);
$gould-blue-dark: mix(#000, $gould-blue, 20%);

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