#31304C

#31304C

Color Values

HEX

#31304C

RGB

49, 48, 76

HSL

242.1, 22.6%, 24.3%

HSV

242.1, 36.8%, 29.8%

CMYK

35.5%, 36.8%, 0.0%, 70.2%

OKLCH

0.3235 0.0493 284.9

Properties

Cool Dark Nearest: RAL 5013 Cobalt Blue

Color Harmonies

Complementary

#31304C

#4B4C30

Analogous

#303D4C

#3F304C

#31304C

Triadic

#31304C

#4C3130

#304C31

Split Complementary

#31304C

#4C3F30

#3D4C30

Tetradic

#31304C

#4C303D

#4B4C30

#304C3F

Color Blindness Simulation

Original

#31304C

Protanopia

#313145

Deuteranopia

#313144

Tritanopia

#31403F

Achromatopsia

#323232

CSS Usage

background-color: #31304C;
color: #31304C;
border-color: #31304C;
Nearest Tailwind: Slate 800 #1E293B

Tailwind Shades

50
#F6F6F9
100
#EAEAF1
200
#D4D3E3
300
#B5B4D0
400
#8D8BB6
500
#65639C
600
#514F7D
700
#403F64
800
#32314E
900
#27273A
950
#191825

Contrast Checker

Text on white

12.67:1

AA Pass AAA Pass

Text on black

1.66:1

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