Indigo
#0A3FDB · Indigo
#0A3FDB is Indigo, a cool blue color. It has an RGB value of 10, 63, 219 and a relative luminance of 0.087, making it a dark surface.
Temperature
❄ Cool
Hue family
blue
Luminance
0.09
Conversions
HEX
RGB
HSL
HSV
CMYK
OKLCHPro
Contrast & accessibility
On white
The quick fox
7.65:1
AA normal✓
AA large✓
AAA normal✓
On black
The quick fox
2.75:1
AA normal✕
AA large✕
AAA normal✕
Color harmonies
Complementary
Analogous
Split-complementary
Shades & tints
Similar named colors
Frequently asked
What is the color #0A3FDB?
#0A3FDB is Indigo, a cool blue color. In RGB it is 10, 63, 219, and in HSL it is 225°, 91%, 45%.
Is #0A3FDB a light or dark color?
#0A3FDB has a relative luminance of 0.087, so it reads as a dark surface. Use light text on top of it for the best contrast.
What colors go well with #0A3FDB?
Its complementary color is #DBA70A. For softer combinations, try the analogous or split-complementary harmonies shown above.