#403C66

#403C66

Color Values

HEX

#403C66

RGB

64, 60, 102

HSL

245.7, 25.9%, 31.8%

HSV

245.7, 41.2%, 40.0%

CMYK

37.3%, 41.2%, 0.0%, 60.0%

OKLCH

0.3802 0.0706 286.9

Properties

Cool Dark Nearest: RAL 5022 Night Blue

Color Harmonies

Complementary

#403C66

#62663C

Analogous

#3C4D66

#553C66

#403C66

Triadic

#403C66

#66403C

#3C6640

Split Complementary

#403C66

#66553C

#4D663C

Tetradic

#403C66

#663C4D

#62663C

#3C6655

Color Blindness Simulation

Original

#403C66

Protanopia

#3E3E5C

Deuteranopia

#3E3F59

Tritanopia

#405452

Achromatopsia

#404040

CSS Usage

background-color: #403C66;
color: #403C66;
border-color: #403C66;
Nearest Tailwind: Blue 950 #172554

Tailwind Shades

50
#F6F6F9
100
#EAE9F1
200
#D4D2E5
300
#B5B2D2
400
#8D88B9
500
#655EA1
600
#514C80
700
#403C67
800
#322F50
900
#27253C
950
#191726

Contrast Checker

Text on white

10.21:1

AA Pass AAA Pass

Text on black

2.06:1

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