#0D203B

#0D203B

Color Values

HEX

#0D203B

RGB

13, 32, 59

HSL

215.2, 63.9%, 14.1%

HSV

215.2, 78.0%, 23.1%

CMYK

78.0%, 45.8%, 0.0%, 76.9%

OKLCH

0.2438 0.0575 257.5

Properties

Cool Dark Nearest: RAL 5013 Cobalt Blue

Color Harmonies

Complementary

#0D203B

#3B280D

Analogous

#0D373B

#110D3B

#0D203B

Triadic

#0D203B

#3B0D20

#203B0D

Split Complementary

#0D203B

#3B110D

#373B0D

Tetradic

#0D203B

#3B0D37

#3B280D

#0D3B11

Color Blindness Simulation

Original

#0D203B

Protanopia

#151534

Deuteranopia

#141333

Tritanopia

#0E2F2E

Achromatopsia

#1E1E1E

CSS Usage

background-color: #0D203B;
color: #0D203B;
border-color: #0D203B;
Nearest Tailwind: Slate 900 #0F172A

Tailwind Shades

50
#F3F7FC
100
#E3EBF7
200
#C4D7F2
300
#9BBBE9
400
#6496DD
500
#2E71D1
600
#255BA7
700
#1D4986
800
#173968
900
#152C4C
950
#0D1C30

Contrast Checker

Text on white

16.32:1

AA Pass AAA Pass

Text on black

1.29:1

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