#42387D

#42387D

Color Values

HEX

#42387D

RGB

66, 56, 125

HSL

248.7, 38.1%, 35.5%

HSV

248.7, 55.2%, 49.0%

CMYK

47.2%, 55.2%, 0.0%, 51.0%

OKLCH

0.389 0.1126 286.6

Properties

Cool Dark Nearest: darkslateblue

Color Harmonies

Complementary

#42387D

#737D38

Analogous

#38517D

#65387D

#42387D

Triadic

#42387D

#7D4238

#387D42

Split Complementary

#42387D

#7D6538

#517D38

Tetradic

#42387D

#7D3851

#737D38

#387D65

Color Blindness Simulation

Original

#42387D

Protanopia

#3E3E6C

Deuteranopia

#3E3F68

Tritanopia

#425F5C

Achromatopsia

#3F3F3F

CSS Usage

background-color: #42387D;
color: #42387D;
border-color: #42387D;
Nearest Tailwind: Blue 900 #1E3A8A

Tailwind Shades

50
#F6F5FA
100
#E9E7F3
200
#D2CEE9
300
#B1AAD9
400
#877DC5
500
#5D4FB0
600
#4A3F8D
700
#3C3371
800
#2F2758
900
#252041
950
#171429

Contrast Checker

Text on white

10.03:1

AA Pass AAA Pass

Text on black

2.09:1

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