#423F90

#423F90

Color Values

HEX

#423F90

RGB

66, 63, 144

HSL

242.2, 39.1%, 40.6%

HSV

242.2, 56.2%, 56.5%

CMYK

54.2%, 56.2%, 0.0%, 43.5%

OKLCH

0.4168 0.1299 280.8

Properties

Cool Dark Nearest: slateblue 4

Color Harmonies

Complementary

#423F90

#8D903F

Analogous

#3F6590

#6A3F90

#423F90

Triadic

#423F90

#90423F

#3F9042

Split Complementary

#423F90

#906A3F

#65903F

Tetradic

#423F90

#903F65

#8D903F

#3F906A

Color Blindness Simulation

Original

#423F90

Protanopia

#41417C

Deuteranopia

#414178

Tritanopia

#426D6A

Achromatopsia

#454545

CSS Usage

background-color: #423F90;
color: #423F90;
border-color: #423F90;
Nearest Tailwind: Blue 900 #1E3A8A

Tailwind Shades

50
#F5F5FA
100
#E8E7F3
200
#CECDE9
300
#ACAADA
400
#7E7CC6
500
#514EB1
600
#413E8E
700
#343272
800
#292759
900
#211F41
950
#151429

Contrast Checker

Text on white

8.95:1

AA Pass AAA Pass

Text on black

2.35:1

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