#626D7B

CSS

:root {
  --ashen-whisper: #626d7b;
  --ashen-whisper-rgb: 98 109 123;
  --ashen-whisper-oklch: oklch(0.53 0.026 254.5);
}

.element {
  color: var(--ashen-whisper);
  background-color: hsl(214 11% 43%);
  border-color: oklch(0.53 0.026 254.5);
}

Tailwind CSS v4

@theme {
  --color-ashen-whisper: #626d7b;
  --color-ashen-whisper-50: #f0f6fd;
  --color-ashen-whisper-100: #e2e8f1;
  --color-ashen-whisper-200: #cdd5df;
  --color-ashen-whisper-300: #afb8c5;
  --color-ashen-whisper-400: #94a0ae;
  --color-ashen-whisper-500: #7b8797;
  --color-ashen-whisper-600: #687380;
  --color-ashen-whisper-700: #535c67;
  --color-ashen-whisper-800: #3c434b;
  --color-ashen-whisper-900: #292e34;
  --color-ashen-whisper-950: #171b20;
}

SCSS

$ashen-whisper: #626d7b;
$ashen-whisper-rgb: 98, 109, 123;
$ashen-whisper-light: mix(#fff, $ashen-whisper, 20%);
$ashen-whisper-dark: mix(#000, $ashen-whisper, 20%);

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