Resonant Blue

CSS

:root {
  --resonant-blue: #01a2c6;
  --resonant-blue-rgb: 1 162 198;
  --resonant-blue-oklch: oklch(0.66 0.121 221.1);
}

.element {
  color: var(--resonant-blue);
  background-color: hsl(191 99% 39%);
  border-color: oklch(0.66 0.121 221.1);
}

Tailwind CSS v4

@theme {
  --color-resonant-blue: #01a2c6;
  --color-resonant-blue-50: #d1feff;
  --color-resonant-blue-100: #bdf2ff;
  --color-resonant-blue-200: #9ae0fa;
  --color-resonant-blue-300: #6cc5e5;
  --color-resonant-blue-400: #33aed1;
  --color-resonant-blue-500: #0097be;
  --color-resonant-blue-600: #0080a1;
  --color-resonant-blue-700: #006681;
  --color-resonant-blue-800: #004b5f;
  --color-resonant-blue-900: #003442;
  --color-resonant-blue-950: #00202b;
}

SCSS

$resonant-blue: #01a2c6;
$resonant-blue-rgb: 1, 162, 198;
$resonant-blue-light: mix(#fff, $resonant-blue, 20%);
$resonant-blue-dark: mix(#000, $resonant-blue, 20%);

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