Indigo
#2139ED · Indigo
#2139ED is Indigo, a cool blue color. It has an RGB value of 33, 57, 237 and a relative luminance of 0.094, making it a dark surface.
Temperature
❄ Cool
Hue family
blue
Luminance
0.09
Conversions
HEX
RGB
HSL
HSV
CMYK
OKLCHPro
Contrast & accessibility
On white
The quick fox
7.31:1
AA normal✓
AA large✓
AAA normal✓
On black
The quick fox
2.87:1
AA normal✕
AA large✕
AAA normal✕
Color harmonies
Complementary
Analogous
Split-complementary
Shades & tints
Similar named colors
Frequently asked
What is the color #2139ED?
#2139ED is Indigo, a cool blue color. In RGB it is 33, 57, 237, and in HSL it is 233°, 85%, 53%.
Is #2139ED a light or dark color?
#2139ED has a relative luminance of 0.094, so it reads as a dark surface. Use light text on top of it for the best contrast.
What colors go well with #2139ED?
Its complementary color is #EDD521. For softer combinations, try the analogous or split-complementary harmonies shown above.