#0B103C

#0B103C

Color Values

HEX

#0B103C

RGB

11, 16, 60

HSL

233.9, 69.0%, 13.9%

HSV

233.9, 81.7%, 23.5%

CMYK

81.7%, 73.3%, 0.0%, 76.5%

OKLCH

0.2036 0.0837 271.6

Properties

Cool Dark Nearest: RAL 5002 Ultramarine Blue

Color Harmonies

Complementary

#0B103C

#3C370B

Analogous

#0B283C

#1E0B3C

#0B103C

Triadic

#0B103C

#3C0B10

#103C0B

Split Complementary

#0B103C

#3C1E0B

#283C0B

Tetradic

#0B103C

#3C0B28

#3C370B

#0B3C1E

Color Blindness Simulation

Original

#0B103C

Protanopia

#0D0D31

Deuteranopia

#0D0C2F

Tritanopia

#0B2927

Achromatopsia

#121212

CSS Usage

background-color: #0B103C;
color: #0B103C;
border-color: #0B103C;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F3F4FC
100
#E3E5F8
200
#C3C8F4
300
#98A0EC
400
#606DE2
500
#2839D7
600
#202EAC
700
#19258A
800
#141D6C
900
#12184F
950
#0C0F32

Contrast Checker

Text on white

18.2:1

AA Pass AAA Pass

Text on black

1.15:1

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