Cobalt
#133F7C · Cobalt
#133F7C is Cobalt, a cool blue color. It has an RGB value of 19, 63, 124 and a relative luminance of 0.051, making it a dark surface.
Temperature
❄ Cool
Hue family
blue
Luminance
0.05
Conversions
HEX
RGB
HSL
HSV
CMYK
OKLCHPro
Contrast & accessibility
On white
The quick fox
10.35:1
AA normal✓
AA large✓
AAA normal✓
On black
The quick fox
2.03:1
AA normal✕
AA large✕
AAA normal✕
Color harmonies
Complementary
Split-complementary
Shades & tints
Similar named colors
Frequently asked
What is the color #133F7C?
#133F7C is Cobalt, a cool blue color. In RGB it is 19, 63, 124, and in HSL it is 215°, 73%, 28%.
Is #133F7C a light or dark color?
#133F7C has a relative luminance of 0.051, so it reads as a dark surface. Use light text on top of it for the best contrast.
What colors go well with #133F7C?
Its complementary color is #7C5013. For softer combinations, try the analogous or split-complementary harmonies shown above.