#42428B

#42428B

Color Values

HEX

#42428B

RGB

66, 66, 139

HSL

240.0, 35.6%, 40.2%

HSV

240.0, 52.5%, 54.5%

CMYK

52.5%, 52.5%, 0.0%, 45.5%

OKLCH

0.419 0.1183 280.0

Properties

Cool Dark Nearest: darkslateblue

Color Harmonies

Complementary

#42428B

#8B8B42

Analogous

#42678B

#67428B

#42428B

Triadic

#42428B

#8B4242

#428B42

Split Complementary

#42428B

#8B6742

#678B42

Tetradic

#42428B

#8B4267

#8B8B42

#428B67

Color Blindness Simulation

Original

#42428B

Protanopia

#424279

Deuteranopia

#424275

Tritanopia

#426B68

Achromatopsia

#474747

CSS Usage

background-color: #42428B;
color: #42428B;
border-color: #42428B;
Nearest Tailwind: Blue 900 #1E3A8A

Tailwind Shades

50
#F5F5FA
100
#E8E8F3
200
#CFCFE8
300
#ACACD8
400
#7F7FC2
500
#5252AD
600
#42428A
700
#35356F
800
#292956
900
#212140
950
#151528

Contrast Checker

Text on white

8.81:1

AA Pass AAA Pass

Text on black

2.38:1

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