#403C8B

#403C8B

Color Values

HEX

#403C8B

RGB

64, 60, 139

HSL

243.0, 39.7%, 39.0%

HSV

243.0, 56.8%, 54.5%

CMYK

54.0%, 56.8%, 0.0%, 45.5%

OKLCH

0.4055 0.1273 281.4

Properties

Cool Dark Nearest: slateblue 4

Color Harmonies

Complementary

#403C8B

#878B3C

Analogous

#3C608B

#673C8B

#403C8B

Triadic

#403C8B

#8B403C

#3C8B40

Split Complementary

#403C8B

#8B673C

#608B3C

Tetradic

#403C8B

#8B3C60

#878B3C

#3C8B67

Color Blindness Simulation

Original

#403C8B

Protanopia

#3E3E78

Deuteranopia

#3E3F73

Tritanopia

#406965

Achromatopsia

#434343

CSS Usage

background-color: #403C8B;
color: #403C8B;
border-color: #403C8B;
Nearest Tailwind: Blue 900 #1E3A8A

Tailwind Shades

50
#F5F5FA
100
#E8E7F3
200
#CFCDE9
300
#ACAADA
400
#7F7BC6
500
#524DB2
600
#423E8E
700
#343172
800
#292659
900
#211F42
950
#15142A

Contrast Checker

Text on white

9.39:1

AA Pass AAA Pass

Text on black

2.24:1

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