Indigo
#3C66D3 · Indigo
#3C66D3 is Indigo, a cool blue color. It has an RGB value of 60, 102, 211 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
5.21:1
AA normal✓
AA large✓
AAA normal✕
On black
The quick fox
4.03:1
AA normal✕
AA large✓
AAA normal✕
Color harmonies
Complementary
Split-complementary
Shades & tints
Similar named colors
Frequently asked
What is the color #3C66D3?
#3C66D3 is Indigo, a cool blue color. In RGB it is 60, 102, 211, and in HSL it is 223°, 63%, 53%.
Is #3C66D3 a light or dark color?
#3C66D3 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 #3C66D3?
Its complementary color is #D3A83C. For softer combinations, try the analogous or split-complementary harmonies shown above.