#3F3F80

#3F3F80

Color Values

HEX

#3F3F80

RGB

63, 63, 128

HSL

240.0, 34.0%, 37.5%

HSV

240.0, 50.8%, 50.2%

CMYK

50.8%, 50.8%, 0.0%, 49.8%

OKLCH

0.4026 0.1068 280.5

Properties

Cool Dark Nearest: royalblue 4

Color Harmonies

Complementary

#3F3F80

#80803F

Analogous

#3F6080

#603F80

#3F3F80

Triadic

#3F3F80

#803F3F

#3F803F

Split Complementary

#3F3F80

#80603F

#60803F

Tetradic

#3F3F80

#803F60

#80803F

#3F8060

Color Blindness Simulation

Original

#3F3F80

Protanopia

#3F3F70

Deuteranopia

#3F3F6C

Tritanopia

#3F6461

Achromatopsia

#444444

CSS Usage

background-color: #3F3F80;
color: #3F3F80;
border-color: #3F3F80;
Nearest Tailwind: Blue 900 #1E3A8A

Tailwind Shades

50
#F5F5FA
100
#E8E8F2
200
#CFCFE7
300
#ADADD7
400
#8181C1
500
#5454AB
600
#434389
700
#36366D
800
#2A2A55
900
#22223F
950
#151528

Contrast Checker

Text on white

9.4:1

AA Pass AAA Pass

Text on black

2.23:1

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