Indigo
#540DD9 · Indigo
#540DD9 is Indigo, a cool violet color. It has an RGB value of 84, 13, 217 and a relative luminance of 0.072, making it a dark surface.
Temperature
❄ Cool
Hue family
violet
Luminance
0.07
Conversions
HEX
RGB
HSL
HSV
CMYK
OKLCHPro
Contrast & accessibility
On white
The quick fox
8.62:1
AA normal✓
AA large✓
AAA normal✓
On black
The quick fox
2.44:1
AA normal✕
AA large✕
AAA normal✕
Color harmonies
Complementary
Split-complementary
Shades & tints
Similar named colors
Frequently asked
What is the color #540DD9?
#540DD9 is Indigo, a cool violet color. In RGB it is 84, 13, 217, and in HSL it is 261°, 89%, 45%.
Is #540DD9 a light or dark color?
#540DD9 has a relative luminance of 0.072, so it reads as a dark surface. Use light text on top of it for the best contrast.
What colors go well with #540DD9?
Its complementary color is #91D90D. For softer combinations, try the analogous or split-complementary harmonies shown above.