#423E9B

#423E9B

Color Values

HEX

#423E9B

RGB

66, 62, 155

HSL

242.6, 42.9%, 42.5%

HSV

242.6, 60.0%, 60.8%

CMYK

57.4%, 60.0%, 0.0%, 39.2%

OKLCH

0.4235 0.1469 280.0

Properties

Cool Dark Nearest: slateblue 4

Color Harmonies

Complementary

#423E9B

#979B3E

Analogous

#3E689B

#703E9B

#423E9B

Triadic

#423E9B

#9B423E

#3E9B42

Split Complementary

#423E9B

#9B703E

#689B3E

Tetradic

#423E9B

#9B3E68

#979B3E

#3E9B70

Color Blindness Simulation

Original

#423E9B

Protanopia

#404085

Deuteranopia

#40417F

Tritanopia

#42736F

Achromatopsia

#464646

CSS Usage

background-color: #423E9B;
color: #423E9B;
border-color: #423E9B;
Nearest Tailwind: Indigo 900 #312E81

Tailwind Shades

50
#F5F5FA
100
#E7E7F4
200
#CDCCEB
300
#AAA8DC
400
#7C78C9
500
#4E49B6
600
#3E3A92
700
#322F75
800
#27245B
900
#1F1E43
950
#14132A

Contrast Checker

Text on white

8.77:1

AA Pass AAA Pass

Text on black

2.39:1

AA Fail AAA Fail

Related Articles

Tutorials

CSS color-mix(): Blend Colors Natively in the Browser

Jan 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

Jan 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

Jan 15, 2026