#403F97

#403F97

Color Values

HEX

#403F97

RGB

64, 63, 151

HSL

240.7, 41.1%, 42.0%

HSV

240.7, 58.3%, 59.2%

CMYK

57.6%, 58.3%, 0.0%, 40.8%

OKLCH

0.4206 0.1403 279.0

Properties

Cool Dark Nearest: slateblue 4

Color Harmonies

Complementary

#403F97

#96973F

Analogous

#3F6A97

#6C3F97

#403F97

Triadic

#403F97

#97403F

#3F9740

Split Complementary

#403F97

#976C3F

#6A973F

Tetradic

#403F97

#973F6A

#96973F

#3F976C

Color Blindness Simulation

Original

#403F97

Protanopia

#404082

Deuteranopia

#40407D

Tritanopia

#40716D

Achromatopsia

#464646

CSS Usage

background-color: #403F97;
color: #403F97;
border-color: #403F97;
Nearest Tailwind: Indigo 900 #312E81

Tailwind Shades

50
#F5F5FA
100
#E7E7F3
200
#CDCDEA
300
#A9A9DB
400
#7B7AC7
500
#4C4BB4
600
#3D3C90
700
#313073
800
#26265A
900
#1F1F42
950
#14132A

Contrast Checker

Text on white

8.84:1

AA Pass AAA Pass

Text on black

2.38:1

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