#3F4665

#3F4665

Color Values

HEX

#3F4665

RGB

63, 70, 101

HSL

228.9, 23.2%, 32.2%

HSV

228.9, 37.6%, 39.6%

CMYK

37.6%, 30.7%, 0.0%, 60.4%

OKLCH

0.4015 0.0532 274.0

Properties

Cool Dark Nearest: RAL 5000 Violet Blue

Color Harmonies

Complementary

#3F4665

#655E3F

Analogous

#3F5965

#4B3F65

#3F4665

Triadic

#3F4665

#653F46

#46653F

Split Complementary

#3F4665

#654B3F

#59653F

Tetradic

#3F4665

#653F59

#655E3F

#3F654B

Color Blindness Simulation

Original

#3F4665

Protanopia

#42425E

Deuteranopia

#42415C

Tritanopia

#3F5856

Achromatopsia

#474747

CSS Usage

background-color: #3F4665;
color: #3F4665;
border-color: #3F4665;
Nearest Tailwind: Slate 700 #334155

Tailwind Shades

50
#F6F6F9
100
#EAEBF1
200
#D3D6E4
300
#B4B9D0
400
#8B93B7
500
#626D9D
600
#4E577E
700
#3F4665
800
#31364F
900
#262A3B
950
#181B25

Contrast Checker

Text on white

9.23:1

AA Pass AAA Pass

Text on black

2.28:1

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