Charcoal
#511521 · Charcoal
#511521 is Charcoal, a warm red color. It has an RGB value of 81, 21, 33 and a relative luminance of 0.024, making it a dark surface.
Temperature
☀ Warm
Hue family
red
Luminance
0.02
Conversions
HEX
RGB
HSL
HSV
CMYK
OKLCHPro
Contrast & accessibility
On white
The quick fox
14.20:1
AA normal✓
AA large✓
AAA normal✓
On black
The quick fox
1.48:1
AA normal✕
AA large✕
AAA normal✕
Color harmonies
Complementary
Split-complementary
Shades & tints
Similar named colors
Frequently asked
What is the color #511521?
#511521 is Charcoal, a warm red color. In RGB it is 81, 21, 33, and in HSL it is 348°, 59%, 20%.
Is #511521 a light or dark color?
#511521 has a relative luminance of 0.024, so it reads as a dark surface. Use light text on top of it for the best contrast.
What colors go well with #511521?
Its complementary color is #155145. For softer combinations, try the analogous or split-complementary harmonies shown above.