#3F4366

#3F4366

Color Values

HEX

#3F4366

RGB

63, 67, 102

HSL

233.8, 23.6%, 32.4%

HSV

233.8, 38.2%, 40.0%

CMYK

38.2%, 34.3%, 0.0%, 60.0%

OKLCH

0.3951 0.0593 278.3

Properties

Cool Dark Nearest: RAL 5000 Violet Blue

Color Harmonies

Complementary

#3F4366

#66623F

Analogous

#3F5766

#4F3F66

#3F4366

Triadic

#3F4366

#663F43

#43663F

Split Complementary

#3F4366

#664F3F

#57663F

Tetradic

#3F4366

#663F57

#66623F

#3F664F

Color Blindness Simulation

Original

#3F4366

Protanopia

#41415E

Deuteranopia

#40405B

Tritanopia

#3F5755

Achromatopsia

#454545

CSS Usage

background-color: #3F4366;
color: #3F4366;
border-color: #3F4366;
Nearest Tailwind: Slate 700 #334155

Tailwind Shades

50
#F6F6F9
100
#EAEAF1
200
#D3D5E4
300
#B3B6D0
400
#8A8FB7
500
#61689E
600
#4E537E
700
#3E4265
800
#31344F
900
#26283B
950
#181925

Contrast Checker

Text on white

9.52:1

AA Pass AAA Pass

Text on black

2.21:1

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