Indigo
#2566E9 · Indigo
#2566E9 is Indigo, a cool blue color. It has an RGB value of 37, 102, 233 and a relative luminance of 0.158, making it a dark surface.
Temperature
❄ Cool
Hue family
blue
Luminance
0.16
Conversions
HEX
RGB
HSL
HSV
CMYK
OKLCHPro
Contrast & accessibility
On white
The quick fox
5.05:1
AA normal✓
AA large✓
AAA normal✕
On black
The quick fox
4.16:1
AA normal✕
AA large✓
AAA normal✕
Color harmonies
Complementary
Split-complementary
Shades & tints
Similar named colors
Frequently asked
What is the color #2566E9?
#2566E9 is Indigo, a cool blue color. In RGB it is 37, 102, 233, and in HSL it is 220°, 82%, 53%.
Is #2566E9 a light or dark color?
#2566E9 has a relative luminance of 0.158, so it reads as a dark surface. Use light text on top of it for the best contrast.
What colors go well with #2566E9?
Its complementary color is #E9A825. For softer combinations, try the analogous or split-complementary harmonies shown above.