Rhythmic Blue

CSS

:root {
  --rhythmic-blue: #b8d5d7;
  --rhythmic-blue-rgb: 184 213 215;
  --rhythmic-blue-oklch: oklch(0.852 0.031 201.7);
}

.element {
  color: var(--rhythmic-blue);
  background-color: hsl(184 28% 78%);
  border-color: oklch(0.852 0.031 201.7);
}

Tailwind CSS v4

@theme {
  --color-rhythmic-blue: #b8d5d7;
  --color-rhythmic-blue-50: #ecf8f9;
  --color-rhythmic-blue-100: #ddebec;
  --color-rhythmic-blue-200: #c6d8da;
  --color-rhythmic-blue-300: #a6bcbf;
  --color-rhythmic-blue-400: #8aa4a6;
  --color-rhythmic-blue-500: #6f8d8f;
  --color-rhythmic-blue-600: #5e7779;
  --color-rhythmic-blue-700: #4b5f61;
  --color-rhythmic-blue-800: #364646;
  --color-rhythmic-blue-900: #253031;
  --color-rhythmic-blue-950: #131d1d;
}

SCSS

$rhythmic-blue: #b8d5d7;
$rhythmic-blue-rgb: 184, 213, 215;
$rhythmic-blue-light: mix(#fff, $rhythmic-blue, 20%);
$rhythmic-blue-dark: mix(#000, $rhythmic-blue, 20%);

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