Cobalt
#17058A · Cobalt
#17058A is Cobalt, a cool blue color. It has an RGB value of 23, 5, 138 and a relative luminance of 0.021, making it a dark surface.
Temperature
❄ Cool
Hue family
blue
Luminance
0.02
Conversions
HEX
RGB
HSL
HSV
CMYK
OKLCHPro
Contrast & accessibility
On white
The quick fox
14.74:1
AA normal✓
AA large✓
AAA normal✓
On black
The quick fox
1.43:1
AA normal✕
AA large✕
AAA normal✕
Color harmonies
Complementary
Split-complementary
Shades & tints
Similar named colors
Frequently asked
What is the color #17058A?
#17058A is Cobalt, a cool blue color. In RGB it is 23, 5, 138, and in HSL it is 248°, 93%, 28%.
Is #17058A a light or dark color?
#17058A has a relative luminance of 0.021, so it reads as a dark surface. Use light text on top of it for the best contrast.
What colors go well with #17058A?
Its complementary color is #788A05. For softer combinations, try the analogous or split-complementary harmonies shown above.