Indigo
#1A5BCB · Indigo
#1A5BCB is Indigo, a cool blue color. It has an RGB value of 26, 91, 203 and a relative luminance of 0.120, making it a dark surface.
Temperature
❄ Cool
Hue family
blue
Luminance
0.12
Conversions
HEX
RGB
HSL
HSV
CMYK
OKLCHPro
Contrast & accessibility
On white
The quick fox
6.17:1
AA normal✓
AA large✓
AAA normal✕
On black
The quick fox
3.40:1
AA normal✕
AA large✓
AAA normal✕
Color harmonies
Complementary
Split-complementary
Shades & tints
Similar named colors
Frequently asked
What is the color #1A5BCB?
#1A5BCB is Indigo, a cool blue color. In RGB it is 26, 91, 203, and in HSL it is 218°, 77%, 45%.
Is #1A5BCB a light or dark color?
#1A5BCB has a relative luminance of 0.120, so it reads as a dark surface. Use light text on top of it for the best contrast.
What colors go well with #1A5BCB?
Its complementary color is #CB8A1A. For softer combinations, try the analogous or split-complementary harmonies shown above.