#403F89

#403F89

Color Values

HEX

#403F89

RGB

64, 63, 137

HSL

240.8, 37.0%, 39.2%

HSV

240.8, 54.0%, 53.7%

CMYK

53.3%, 54.0%, 0.0%, 46.3%

OKLCH

0.4099 0.1201 280.3

Properties

Cool Dark Nearest: darkslateblue

Color Harmonies

Complementary

#403F89

#88893F

Analogous

#3F6389

#653F89

#403F89

Triadic

#403F89

#89403F

#3F8940

Split Complementary

#403F89

#89653F

#63893F

Tetradic

#403F89

#893F63

#88893F

#3F8965

Color Blindness Simulation

Original

#403F89

Protanopia

#404077

Deuteranopia

#404073

Tritanopia

#406966

Achromatopsia

#454545

CSS Usage

background-color: #403F89;
color: #403F89;
border-color: #403F89;
Nearest Tailwind: Blue 900 #1E3A8A

Tailwind Shades

50
#F5F5FA
100
#E8E8F3
200
#CECEE9
300
#ACABD8
400
#7F7EC4
500
#5250AF
600
#41408C
700
#343370
800
#292857
900
#212041
950
#151429

Contrast Checker

Text on white

9.17:1

AA Pass AAA Pass

Text on black

2.29:1

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