#151921 Hex Color
Quiet charcoal for focused interfaces
#151921 is a very dark, muted blue-gray with cool charcoal undertones. Its low saturation creates a serious, controlled mood suited to finance, security, technology, and government branding. Use it as a dominant dark-mode background with white text, which achieves about 17.6:1 contrast. The hex code #151921 also supports restrained, moody layouts.
Questions about #151921
What is #151921 in RGB, HSL and CMYK?
In RGB, #151921 is rgb(21, 25, 33), in HSL hsl(220, 22%, 11%) and in CMYK 36%, 24%, 0%, 87%.
What colors pair well with #151921?
Is #151921 warm or cool?
#151921 reads as cool because its near-black base carries a subtle blue-gray cast rather than brown or red undertones, giving interfaces a technical, serious feel while allowing warm accents to add energy.
Is #151921 readable on white or black?
#151921 has a 17.60:1 contrast ratio on white and 1.19:1 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.