Indigo
#2143ED · Indigo
#2143ED is Indigo, a cool blue color. It has an RGB value of 33, 67, 237 and a relative luminance of 0.105, making it a dark surface.
Temperature
❄ Cool
Hue family
blue
Luminance
0.10
Conversions
HEX
RGB
HSL
HSV
CMYK
OKLCHPro
Contrast & accessibility
On white
The quick fox
6.80:1
AA normal✓
AA large✓
AAA normal✕
On black
The quick fox
3.09:1
AA normal✕
AA large✓
AAA normal✕
Color harmonies
Complementary
Analogous
Split-complementary
Shades & tints
Similar named colors
Frequently asked
What is the color #2143ED?
#2143ED is Indigo, a cool blue color. In RGB it is 33, 67, 237, and in HSL it is 230°, 85%, 53%.
Is #2143ED a light or dark color?
#2143ED has a relative luminance of 0.105, so it reads as a dark surface. Use light text on top of it for the best contrast.
What colors go well with #2143ED?
Its complementary color is #EDCB21. For softer combinations, try the analogous or split-complementary harmonies shown above.