Indigo
#153BF9 · Indigo
#153BF9 is Indigo, a cool blue color. It has an RGB value of 21, 59, 249 and a relative luminance of 0.101, 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
6.94:1
AA normal✓
AA large✓
AAA normal✕
On black
The quick fox
3.03:1
AA normal✕
AA large✓
AAA normal✕
Color harmonies
Complementary
Analogous
Split-complementary
Shades & tints
Similar named colors
Frequently asked
What is the color #153BF9?
#153BF9 is Indigo, a cool blue color. In RGB it is 21, 59, 249, and in HSL it is 230°, 95%, 53%.
Is #153BF9 a light or dark color?
#153BF9 has a relative luminance of 0.101, so it reads as a dark surface. Use light text on top of it for the best contrast.
What colors go well with #153BF9?
Its complementary color is #F9D315. For softer combinations, try the analogous or split-complementary harmonies shown above.