#423F9B

#423F9B

Color Values

HEX

#423F9B

RGB

66, 63, 155

HSL

242.0, 42.2%, 42.7%

HSV

242.0, 59.4%, 60.8%

CMYK

57.4%, 59.4%, 0.0%, 39.2%

OKLCH

0.4254 0.1456 279.7

Properties

Cool Dark Nearest: slateblue 4

Color Harmonies

Complementary

#423F9B

#989B3F

Analogous

#3F6A9B

#703F9B

#423F9B

Triadic

#423F9B

#9B423F

#3F9B42

Split Complementary

#423F9B

#9B703F

#6A9B3F

Tetradic

#423F9B

#9B3F6A

#989B3F

#3F9B70

Color Blindness Simulation

Original

#423F9B

Protanopia

#414185

Deuteranopia

#41417F

Tritanopia

#42736F

Achromatopsia

#464646

CSS Usage

background-color: #423F9B;
color: #423F9B;
border-color: #423F9B;
Nearest Tailwind: Indigo 900 #312E81

Tailwind Shades

50
#F5F5FA
100
#E7E7F4
200
#CDCCEA
300
#AAA8DC
400
#7B79C8
500
#4D4AB5
600
#3E3B91
700
#312F74
800
#27255B
900
#1F1E43
950
#14132A

Contrast Checker

Text on white

8.69:1

AA Pass AAA Pass

Text on black

2.42:1

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