Cobalt
#00248F · Cobalt
#00248F is Cobalt, a cool blue color. It has an RGB value of 0, 36, 143 and a relative luminance of 0.032, making it a dark surface.
Temperature
❄ Cool
Hue family
blue
Luminance
0.03
Conversions
HEX
RGB
HSL
HSV
CMYK
OKLCHPro
Contrast & accessibility
On white
The quick fox
12.74:1
AA normal✓
AA large✓
AAA normal✓
On black
The quick fox
1.65:1
AA normal✕
AA large✕
AAA normal✕
Color harmonies
Complementary
Split-complementary
Shades & tints
Similar named colors
Frequently asked
What is the color #00248F?
#00248F is Cobalt, a cool blue color. In RGB it is 0, 36, 143, and in HSL it is 225°, 100%, 28%.
Is #00248F a light or dark color?
#00248F has a relative luminance of 0.032, so it reads as a dark surface. Use light text on top of it for the best contrast.
What colors go well with #00248F?
Its complementary color is #8F6B00. For softer combinations, try the analogous or split-complementary harmonies shown above.