#0A102F

#0A102F

Color Values

HEX

#0A102F

RGB

10, 16, 47

HSL

230.3, 64.9%, 11.2%

HSV

230.3, 78.7%, 18.4%

CMYK

78.7%, 66.0%, 0.0%, 81.6%

OKLCH

0.1894 0.0623 271.0

Properties

Cool Dark Nearest: RAL 5013 Cobalt Blue

Color Harmonies

Complementary

#0A102F

#2F290A

Analogous

#0A232F

#170A2F

#0A102F

Triadic

#0A102F

#2F0A10

#102F0A

Split Complementary

#0A102F

#2F170A

#232F0A

Tetradic

#0A102F

#2F0A23

#2F290A

#0A2F17

Color Blindness Simulation

Original

#0A102F

Protanopia

#0D0D28

Deuteranopia

#0C0C26

Tritanopia

#0A2220

Achromatopsia

#111111

CSS Usage

background-color: #0A102F;
color: #0A102F;
border-color: #0A102F;
Nearest Tailwind: Slate 900 #0F172A

Tailwind Shades

50
#F3F4FC
100
#E3E6F7
200
#C4CCF2
300
#9AA7EA
400
#6377DE
500
#2D48D2
600
#2439A8
700
#1D2E87
800
#162469
900
#141D4D
950
#0D1330

Contrast Checker

Text on white

18.62:1

AA Pass AAA Pass

Text on black

1.13:1

AA Fail AAA Fail

Related Articles

Tutorials

CSS color-mix(): Blend Colors Natively in the Browser

Jan 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

Jan 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

Jan 15, 2026