Crimson
#E21603 · Crimson
#E21603 is Crimson, a warm red color. It has an RGB value of 226, 22, 3 and a relative luminance of 0.167, making it a dark surface.
Temperature
☀ Warm
Hue family
red
Luminance
0.17
Conversions
HEX
RGB
HSL
HSV
CMYK
OKLCHPro
Contrast & accessibility
On white
The quick fox
4.83:1
AA normal✓
AA large✓
AAA normal✕
On black
The quick fox
4.35:1
AA normal✕
AA large✓
AAA normal✕
Color harmonies
Complementary
Split-complementary
Shades & tints
Similar named colors
Frequently asked
What is the color #E21603?
#E21603 is Crimson, a warm red color. In RGB it is 226, 22, 3, and in HSL it is 5°, 97%, 45%.
Is #E21603 a light or dark color?
#E21603 has a relative luminance of 0.167, so it reads as a dark surface. Use light text on top of it for the best contrast.
What colors go well with #E21603?
Its complementary color is #03D0E2. For softer combinations, try the analogous or split-complementary harmonies shown above.