#2121B3

#2121B3

Color Values

HEX

#2121B3

RGB

33, 33, 179

HSL

240.0, 68.9%, 41.6%

HSV

240.0, 81.6%, 70.2%

CMYK

81.6%, 81.6%, 0.0%, 29.8%

OKLCH

0.3819 0.2166 269.9

Properties

Cool Dark Nearest: darkblue

Color Harmonies

Complementary

#2121B3

#B3B321

Analogous

#216AB3

#6A21B3

#2121B3

Triadic

#2121B3

#B32121

#21B321

Split Complementary

#2121B3

#B36A21

#6AB321

Tetradic

#2121B3

#B3216A

#B3B321

#21B36A

Color Blindness Simulation

Original

#2121B3

Protanopia

#212190

Deuteranopia

#212187

Tritanopia

#21746E

Achromatopsia

#2C2C2C

CSS Usage

background-color: #2121B3;
color: #2121B3;
border-color: #2121B3;
Nearest Tailwind: Indigo 700 #4338CA

Tailwind Shades

50
#F3F3FC
100
#E3E3F8
200
#C3C3F4
300
#9898EC
400
#6060E2
500
#2828D7
600
#2020AC
700
#19198A
800
#14146C
900
#12124E
950
#0C0C32

Contrast Checker

Text on white

10.86:1

AA Pass AAA Pass

Text on black

1.93:1

AA Fail AAA Fail

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