#21354B

#21354B

Color Values

HEX

#21354B

RGB

33, 53, 75

HSL

211.4, 38.9%, 21.2%

HSV

211.4, 56.0%, 29.4%

CMYK

56.0%, 29.3%, 0.0%, 70.6%

OKLCH

0.3227 0.0472 251.7

Properties

Cool Dark Nearest: RAL 5020 Ocean Blue

Color Harmonies

Complementary

#21354B

#4B3721

Analogous

#214A4B

#22214B

#21354B

Triadic

#21354B

#4B2135

#354B21

Split Complementary

#21354B

#4B2221

#4A4B21

Tetradic

#21354B

#4B214A

#4B3721

#214B22

Color Blindness Simulation

Original

#21354B

Protanopia

#2A2A46

Deuteranopia

#282744

Tritanopia

#224141

Achromatopsia

#323232

CSS Usage

background-color: #21354B;
color: #21354B;
border-color: #21354B;
Nearest Tailwind: Sky 950 #082F49

Tailwind Shades

50
#F5F7FA
100
#E7EDF3
200
#CDDBE9
300
#AAC1DA
400
#7C9FC5
500
#4E7DB1
600
#3E648E
700
#325071
800
#273F59
900
#1F3041
950
#141E29

Contrast Checker

Text on white

12.53:1

AA Pass AAA Pass

Text on black

1.68:1

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