#101819 Hex Color

A moody dark cyan with dusty depth

Hex color #101819 graphic
This dark, desaturated cyan carries an almost black, dusty quality. The hex code #101819 functions as a versatile base for moody, tech-focused dark mode interfaces. Its 18.0:1 contrast ratio against white text ensures maximum readability for small body copy. Use this shade to anchor vibrant, saturated accents without the visual harshness of pure black.

Questions about #101819

What is #101819 in RGB, HSL and CMYK?
In RGB, #101819 is rgb(16, 24, 25), in HSL hsl(187, 22%, 8%) and in CMYK 36%, 4%, 0%, 90%.
Why use #101819 instead of pure black for web backgrounds?
#101819 provides a softer, more sophisticated background that reduces eye strain while maintaining excellent readability for white or light-colored text. It carries a subtle cyan undertone that anchors teal or gray accents, making it far more versatile for modern user interfaces.
What color palettes work best with #101819?
Since #101819 acts as a near-black neutral, it pairs beautifully with high-saturation electric blue or lime to create a crisp, tech-forward aesthetic. You can also ground it with muted slate tones if your design requires a calmer, more monochromatic atmosphere.
Is #101819 readable on white or black?
#101819 has a 17.99:1 contrast ratio on white and 1.16:1 on black. WCAG asks for 4.5:1 for body text and 3:1 for large text, so on white it works for body text and on black it is too faint for text. Try other pairs in the contrast checker.