#21538B

#21538B

Color Values

HEX

#21538B

RGB

33, 83, 139

HSL

211.7, 61.6%, 33.7%

HSV

211.7, 76.3%, 54.5%

CMYK

76.3%, 40.3%, 0.0%, 45.5%

OKLCH

0.4381 0.1069 253.6

Properties

Cool Dark Nearest: dodgerblue 4

Color Harmonies

Complementary

#21538B

#8B5921

Analogous

#21888B

#24218B

#21538B

Triadic

#21538B

#8B2153

#538B21

Split Complementary

#21538B

#8B2421

#888B21

Tetradic

#21538B

#8B2188

#8B5921

#218B24

Color Blindness Simulation

Original

#21538B

Protanopia

#37377D

Deuteranopia

#34307A

Tritanopia

#247370

Achromatopsia

#4C4C4C

CSS Usage

background-color: #21538B;
color: #21538B;
border-color: #21538B;
Nearest Tailwind: Sky 800 #075985

Tailwind Shades

50
#F3F7FB
100
#E4EDF6
200
#C5DAF1
300
#9CC0E7
400
#679DDB
500
#317BCE
600
#2762A5
700
#1F4F84
800
#183E67
900
#162F4B
950
#0E1E30

Contrast Checker

Text on white

7.85:1

AA Pass AAA Pass

Text on black

2.67:1

AA Fail AAA Fail

Related Articles

Brand Stories

Pantone Colors by Decade: The 2000s, 2010s, and 2020s Compared

Feb 01, 2026
Tutorials

Responsive Color: Adapting Colors for Different Screens

Jan 23, 2026
Tutorials

Color for Data Storytelling: Beyond Default Chart Colors

Jan 21, 2026