Indigo
#3F5ECF · Indigo
#3F5ECF is Indigo, a cool blue color. It has an RGB value of 63, 94, 207 and a relative luminance of 0.136, making it a dark surface.
Temperature
❄ Cool
Hue family
blue
Luminance
0.14
Conversions
HEX
RGB
HSL
HSV
CMYK
OKLCHPro
Contrast & accessibility
On white
The quick fox
5.66:1
AA normal✓
AA large✓
AAA normal✕
On black
The quick fox
3.71:1
AA normal✕
AA large✓
AAA normal✕
Color harmonies
Complementary
Analogous
Split-complementary
Shades & tints
Similar named colors
Frequently asked
What is the color #3F5ECF?
#3F5ECF is Indigo, a cool blue color. In RGB it is 63, 94, 207, and in HSL it is 227°, 60%, 53%.
Is #3F5ECF a light or dark color?
#3F5ECF has a relative luminance of 0.136, so it reads as a dark surface. Use light text on top of it for the best contrast.
What colors go well with #3F5ECF?
Its complementary color is #CFB03F. For softer combinations, try the analogous or split-complementary harmonies shown above.