Indigo
#3970D5 · Indigo
#3970D5 is Indigo, a cool blue color. It has an RGB value of 57, 112, 213 and a relative luminance of 0.173, making it a dark surface.
Temperature
❄ Cool
Hue family
blue
Luminance
0.17
Conversions
HEX
RGB
HSL
HSV
CMYK
OKLCHPro
Contrast & accessibility
On white
The quick fox
4.72:1
AA normal✓
AA large✓
AAA normal✕
On black
The quick fox
4.45:1
AA normal✕
AA large✓
AAA normal✕
Color harmonies
Complementary
Split-complementary
Shades & tints
Similar named colors
Frequently asked
What is the color #3970D5?
#3970D5 is Indigo, a cool blue color. In RGB it is 57, 112, 213, and in HSL it is 219°, 65%, 53%.
Is #3970D5 a light or dark color?
#3970D5 has a relative luminance of 0.173, so it reads as a dark surface. Use light text on top of it for the best contrast.
What colors go well with #3970D5?
Its complementary color is #D59F39. For softer combinations, try the analogous or split-complementary harmonies shown above.