#423F9A

#423F9A

Color Values

HEX

#423F9A

RGB

66, 63, 154

HSL

242.0, 41.9%, 42.5%

HSV

242.0, 59.1%, 60.4%

CMYK

57.1%, 59.1%, 0.0%, 39.6%

OKLCH

0.4246 0.1442 279.8

Properties

Cool Dark Nearest: slateblue 4

Color Harmonies

Complementary

#423F9A

#979A3F

Analogous

#3F699A

#6F3F9A

#423F9A

Triadic

#423F9A

#9A423F

#3F9A42

Split Complementary

#423F9A

#9A6F3F

#699A3F

Tetradic

#423F9A

#9A3F69

#979A3F

#3F9A6F

Color Blindness Simulation

Original

#423F9A

Protanopia

#414184

Deuteranopia

#41417F

Tritanopia

#42736F

Achromatopsia

#464646

CSS Usage

background-color: #423F9A;
color: #423F9A;
border-color: #423F9A;
Nearest Tailwind: Indigo 900 #312E81

Tailwind Shades

50
#F5F5FA
100
#E7E7F4
200
#CDCCEA
300
#AAA8DB
400
#7C79C8
500
#4E4AB5
600
#3E3B91
700
#322F74
800
#27255A
900
#1F1E43
950
#14132A

Contrast Checker

Text on white

8.72:1

AA Pass AAA Pass

Text on black

2.41:1

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