#423D91

#423D91

Color Values

HEX

#423D91

RGB

66, 61, 145

HSL

243.6, 40.8%, 40.4%

HSV

243.6, 57.9%, 56.9%

CMYK

54.5%, 57.9%, 0.0%, 43.1%

OKLCH

0.4137 0.1342 281.5

Properties

Cool Dark Nearest: slateblue 4

Color Harmonies

Complementary

#423D91

#8C913D

Analogous

#3D6291

#6C3D91

#423D91

Triadic

#423D91

#91423D

#3D9142

Split Complementary

#423D91

#916C3D

#62913D

Tetradic

#423D91

#913D62

#8C913D

#3D916C

Color Blindness Simulation

Original

#423D91

Protanopia

#40407D

Deuteranopia

#404078

Tritanopia

#426D69

Achromatopsia

#444444

CSS Usage

background-color: #423D91;
color: #423D91;
border-color: #423D91;
Nearest Tailwind: Indigo 900 #312E81

Tailwind Shades

50
#F5F5FA
100
#E8E7F3
200
#CECDEA
300
#ACA9DB
400
#7F7AC7
500
#524BB4
600
#413C90
700
#343073
800
#29265A
900
#211F42
950
#15132A

Contrast Checker

Text on white

9.1:1

AA Pass AAA Pass

Text on black

2.31:1

AA Fail AAA Fail

Related Articles

Brand Stories

Pantone Colors by Decade: The 2000s, 2010s, and 2020s Compared

Feb 01, 2026
Tutorials

Responsive Color: Adapting Colors for Different Screens

Jan 23, 2026
Tutorials

Color for Data Storytelling: Beyond Default Chart Colors

Jan 21, 2026