#3F286B

#3F286B

Color Values

HEX

#3F286B

RGB

63, 40, 107

HSL

260.6, 45.6%, 28.8%

HSV

260.6, 62.6%, 42.0%

CMYK

41.1%, 62.6%, 0.0%, 58.0%

OKLCH

0.3429 0.112 295.7

Properties

Cool Dark Nearest: RAL 5005 Signal Blue

Color Harmonies

Complementary

#3F286B

#546B28

Analogous

#28326B

#60286B

#3F286B

Triadic

#3F286B

#6B3F28

#286B3F

Split Complementary

#3F286B

#6B6028

#326B28

Tetradic

#3F286B

#6B2832

#546B28

#286B60

Color Blindness Simulation

Original

#3F286B

Protanopia

#35355B

Deuteranopia

#363857

Tritanopia

#3E4E4B

Achromatopsia

#323232

CSS Usage

background-color: #3F286B;
color: #3F286B;
border-color: #3F286B;
Nearest Tailwind: Indigo 900 #312E81

Tailwind Shades

50
#F6F4FA
100
#EBE6F4
200
#D6CBEC
300
#B9A6DE
400
#9376CC
500
#6D45BA
600
#573795
700
#462C77
800
#37235D
900
#2A1D44
950
#1B122B

Contrast Checker

Text on white

12.16:1

AA Pass AAA Pass

Text on black

1.73:1

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