#21393B

#21393B

Color Values

HEX

#21393B

RGB

33, 57, 59

HSL

184.6, 28.3%, 18.0%

HSV

184.6, 44.1%, 23.1%

CMYK

44.1%, 3.4%, 0.0%, 76.9%

OKLCH

0.3258 0.0301 202.5

Properties

Cool Dark Nearest: RAL 6004 Blue Green

Color Harmonies

Complementary

#21393B

#3B2321

Analogous

#213B30

#212C3B

#21393B

Triadic

#21393B

#3B2139

#393B21

Split Complementary

#21393B

#3B212C

#3B3021

Tetradic

#21393B

#30213B

#3B2321

#2C3B21

Color Blindness Simulation

Original

#21393B

Protanopia

#2B2C3B

Deuteranopia

#2A283A

Tritanopia

#223A3A

Achromatopsia

#343434

CSS Usage

background-color: #21393B;
color: #21393B;
border-color: #21393B;
Nearest Tailwind: Teal 950 #042F2E

Tailwind Shades

50
#F6F9F9
100
#E9F1F1
200
#D1E4E5
300
#B0D0D3
400
#86B7BB
500
#5B9EA4
600
#497E83
700
#3B6569
800
#2E4F52
900
#243B3D
950
#172526

Contrast Checker

Text on white

12.26:1

AA Pass AAA Pass

Text on black

1.71:1

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