#403B8B

#403B8B

Color Values

HEX

#403B8B

RGB

64, 59, 139

HSL

243.8, 40.4%, 38.8%

HSV

243.8, 57.6%, 54.5%

CMYK

54.0%, 57.6%, 0.0%, 45.5%

OKLCH

0.4036 0.1288 281.8

Properties

Cool Dark Nearest: slateblue 4

Color Harmonies

Complementary

#403B8B

#868B3B

Analogous

#3B5E8B

#683B8B

#403B8B

Triadic

#403B8B

#8B403B

#3B8B40

Split Complementary

#403B8B

#8B683B

#5E8B3B

Tetradic

#403B8B

#8B3B5E

#868B3B

#3B8B68

Color Blindness Simulation

Original

#403B8B

Protanopia

#3E3E78

Deuteranopia

#3E3E73

Tritanopia

#406865

Achromatopsia

#424242

CSS Usage

background-color: #403B8B;
color: #403B8B;
border-color: #403B8B;
Nearest Tailwind: Indigo 900 #312E81

Tailwind Shades

50
#F5F5FA
100
#E8E7F3
200
#CFCDEA
300
#ACA9DB
400
#7F7BC7
500
#534CB3
600
#423D8F
700
#353173
800
#29265A
900
#211F42
950
#15132A

Contrast Checker

Text on white

9.47:1

AA Pass AAA Pass

Text on black

2.22:1

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