Indigo
#1573D1 · Indigo
#1573D1 is Indigo, a cool blue color. It has an RGB value of 21, 115, 209 and a relative luminance of 0.170, 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
4.77:1
AA normal✓
AA large✓
AAA normal✕
On black
The quick fox
4.40:1
AA normal✕
AA large✓
AAA normal✕
Color harmonies
Complementary
Split-complementary
Shades & tints
Similar named colors
Frequently asked
What is the color #1573D1?
#1573D1 is Indigo, a cool blue color. In RGB it is 21, 115, 209, and in HSL it is 210°, 82%, 45%.
Is #1573D1 a light or dark color?
#1573D1 has a relative luminance of 0.170, so it reads as a dark surface. Use light text on top of it for the best contrast.
What colors go well with #1573D1?
Its complementary color is #D17315. For softer combinations, try the analogous or split-complementary harmonies shown above.