#8DC0C9

CSS

:root {
  --continental-waters: #8dc0c9;
  --continental-waters-rgb: 141 192 201;
  --continental-waters-oklch: oklch(0.775 0.055 209.6);
}

.element {
  color: var(--continental-waters);
  background-color: hsl(189 36% 67%);
  border-color: oklch(0.775 0.055 209.6);
}

Tailwind CSS v4

@theme {
  --color-continental-waters: #8dc0c9;
  --color-continental-waters-50: #e4fafe;
  --color-continental-waters-100: #d4edf2;
  --color-continental-waters-200: #bbdbe2;
  --color-continental-waters-300: #98bfc8;
  --color-continental-waters-400: #78a8b0;
  --color-continental-waters-500: #59909a;
  --color-continental-waters-600: #4c7a82;
  --color-continental-waters-700: #3c6268;
  --color-continental-waters-800: #2b484c;
  --color-continental-waters-900: #1d3235;
  --color-continental-waters-950: #0d1e20;
}

SCSS

$continental-waters: #8dc0c9;
$continental-waters-rgb: 141, 192, 201;
$continental-waters-light: mix(#fff, $continental-waters, 20%);
$continental-waters-dark: mix(#000, $continental-waters, 20%);

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