#8CC0C7

CSS

:root {
  --misty-cold-sea: #8cc0c7;
  --misty-cold-sea-rgb: 140 192 199;
  --misty-cold-sea-oklch: oklch(0.774 0.055 206.5);
}

.element {
  color: var(--misty-cold-sea);
  background-color: hsl(187 35% 66%);
  border-color: oklch(0.774 0.055 206.5);
}

Tailwind CSS v4

@theme {
  --color-misty-cold-sea: #8cc0c7;
  --color-misty-cold-sea-50: #e4fafe;
  --color-misty-cold-sea-100: #d4edf2;
  --color-misty-cold-sea-200: #badbe1;
  --color-misty-cold-sea-300: #97c0c6;
  --color-misty-cold-sea-400: #78a8af;
  --color-misty-cold-sea-500: #589198;
  --color-misty-cold-sea-600: #4b7b81;
  --color-misty-cold-sea-700: #3c6267;
  --color-misty-cold-sea-800: #2a484b;
  --color-misty-cold-sea-900: #1d3234;
  --color-misty-cold-sea-950: #0c1e20;
}

SCSS

$misty-cold-sea: #8cc0c7;
$misty-cold-sea-rgb: 140, 192, 199;
$misty-cold-sea-light: mix(#fff, $misty-cold-sea, 20%);
$misty-cold-sea-dark: mix(#000, $misty-cold-sea, 20%);

.element {
  color: $misty-cold-sea;
  box-shadow: 0 0 0 2px rgba($misty-cold-sea, 0.35);
}