#213147

#213147

Color Values

HEX

#213147

RGB

33, 49, 71

HSL

214.7, 36.5%, 20.4%

HSV

214.7, 53.5%, 27.8%

CMYK

53.5%, 31.0%, 0.0%, 72.2%

OKLCH

0.3099 0.0453 256.5

Properties

Cool Dark Nearest: RAL 5020 Ocean Blue

Color Harmonies

Complementary

#213147

#473721

Analogous

#214447

#242147

#213147

Triadic

#213147

#472131

#314721

Split Complementary

#213147

#472421

#444721

Tetradic

#213147

#472144

#473721

#214724

Color Blindness Simulation

Original

#213147

Protanopia

#282842

Deuteranopia

#272640

Tritanopia

#223D3D

Achromatopsia

#2F2F2F

CSS Usage

background-color: #213147;
color: #213147;
border-color: #213147;
Nearest Tailwind: Slate 800 #1E293B

Tailwind Shades

50
#F5F7FA
100
#E8ECF3
200
#CED9E8
300
#ABBED8
400
#7E9BC3
500
#5178AE
600
#41608B
700
#344D6F
800
#283C57
900
#212E40
950
#151D29

Contrast Checker

Text on white

13.17:1

AA Pass AAA Pass

Text on black

1.59:1

AA Fail AAA Fail

Brands Using This Color

…

Arbitrum

Arbitrum Dark

Related Articles

Tutorials

Building a Color Picker Web Component from Scratch

Feb 20, 2026
Tutorials

Web Color Performance: Gradients, Shadows, and Filters

Feb 19, 2026
Tutorials

Tailwind CSS Colors: Complete Shade System Guide

Feb 19, 2026