Crimson
#B51F08 · Crimson
#B51F08 is Crimson, a warm red color. It has an RGB value of 181, 31, 8 and a relative luminance of 0.108, making it a dark surface.
Temperature
☀ Warm
Hue family
red
Luminance
0.11
Conversions
HEX
RGB
HSL
HSV
CMYK
OKLCHPro
Contrast & accessibility
On white
The quick fox
6.64:1
AA normal✓
AA large✓
AAA normal✕
On black
The quick fox
3.16:1
AA normal✕
AA large✓
AAA normal✕
Color harmonies
Complementary
Split-complementary
Shades & tints
Similar named colors
Frequently asked
What is the color #B51F08?
#B51F08 is Crimson, a warm red color. In RGB it is 181, 31, 8, and in HSL it is 8°, 92%, 37%.
Is #B51F08 a light or dark color?
#B51F08 has a relative luminance of 0.108, so it reads as a dark surface. Use light text on top of it for the best contrast.
What colors go well with #B51F08?
Its complementary color is #089EB5. For softer combinations, try the analogous or split-complementary harmonies shown above.