Indigo
#216DC4 · Indigo
#216DC4 is Indigo, a cool blue color. It has an RGB value of 33, 109, 196 and a relative luminance of 0.152, making it a dark surface.
Temperature
❄ Cool
Hue family
blue
Luminance
0.15
Conversions
HEX
RGB
HSL
HSV
CMYK
OKLCHPro
Contrast & accessibility
On white
The quick fox
5.19:1
AA normal✓
AA large✓
AAA normal✕
On black
The quick fox
4.05:1
AA normal✕
AA large✓
AAA normal✕
Color harmonies
Complementary
Split-complementary
Shades & tints
Similar named colors
Frequently asked
What is the color #216DC4?
#216DC4 is Indigo, a cool blue color. In RGB it is 33, 109, 196, and in HSL it is 212°, 71%, 45%.
Is #216DC4 a light or dark color?
#216DC4 has a relative luminance of 0.152, so it reads as a dark surface. Use light text on top of it for the best contrast.
What colors go well with #216DC4?
Its complementary color is #C47821. For softer combinations, try the analogous or split-complementary harmonies shown above.