#210B0C Hex Color
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Reach for #210b0c when a design needs a background darker than black but warmer. This deep red shade reads almost maroon, with a dusty, ashed-off quality that suits moody interfaces, dramatic packaging, and romance-forward branding. Its low lightness mutes most of red’s usual heat, so treat it as a dominant base rather than an accent. White text on #210b0c hits an 18.8:1 contrast ratio, clearing WCAG AA with room to spare.
Questions about #210b0c
What is #210b0c in RGB, HSL and CMYK?
In RGB, #210b0c is rgb(33, 11, 12), in HSL hsl(357, 50%, 9%) and in CMYK 0%, 67%, 64%, 87%.
What colors pair well with #210b0c in a palette?
#210b0c flatters desaturated sage, muted gold, and warm taupe, which stop it from reading flat against dark neutrals. Skip bright orange, since the two compete in the same warm range without enough contrast to separate.
Does #210b0c read warm or cool?
#210b0c reads warm even though it is very dark. The red hue carries enough warmth to survive the low lightness, giving it a smoldering character closer to dried blood than charcoal.
Where does #210b0c work best in a design?
Use #210b0c as a dominant base at roughly 60 percent of a layout, especially for dark mode UI, entertainment posters, or luxury food packaging. At large sizes it holds its depth, while tiny accents can look muddy against mid-tones.
Is #210b0c readable on white or black?
#210b0c has a 18.78:1 contrast ratio on white and 1.11:1 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.