#21232B Hex Color
A deep, moody indigo with charcoal depth
This dusty indigo is a dark, near-black tone with heavy grey undertones. Because it sits so close to black, #21232b serves best as a moody, atmospheric background for UI designs or dark mode interfaces. White text pops perfectly against it with a 15.7:1 contrast ratio. The hex code for this serious, structural shade is #21232b.
Questions about #21232b
What is #21232b in RGB, HSL and CMYK?
In RGB, #21232b is rgb(33, 35, 43), in HSL hsl(228, 13%, 15%) and in CMYK 23%, 19%, 0%, 83%.
How should I use #21232b in web design?
#21232b works best as a background color for dark mode interfaces because it provides a softer, more atmospheric look than standard black. It maintains excellent readability with white text, providing a natural, professional feel for modern digital products.
Does #21232b read as warm or cool?
This shade reads as cool because of its subtle indigo undertones hidden within the dark, grey base. It feels cleaner and more refined than a standard warm-toned charcoal, making it an ideal choice for technical or minimalist brand identities.
Is #21232b readable on white or black?
#21232b has a 15.67:1 contrast ratio on white and 1.33:1 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.