#3F4355

#3F4355

Color Values

HEX

#3F4355

RGB

63, 67, 85

HSL

229.1, 14.9%, 29.0%

HSV

229.1, 25.9%, 33.3%

CMYK

25.9%, 21.2%, 0.0%, 66.7%

OKLCH

0.3865 0.0311 275.1

Properties

Cool Dark Nearest: RAL 7015 Slate Grey

Color Harmonies

Complementary

#3F4355

#55513F

Analogous

#3F4E55

#463F55

#3F4355

Triadic

#3F4355

#553F43

#43553F

Split Complementary

#3F4355

#55463F

#4E553F

Tetradic

#3F4355

#553F4E

#55513F

#3F5546

Color Blindness Simulation

Original

#3F4355

Protanopia

#414151

Deuteranopia

#404050

Tritanopia

#3F4D4C

Achromatopsia

#434343

CSS Usage

background-color: #3F4355;
color: #3F4355;
border-color: #3F4355;
Nearest Tailwind: Gray 700 #374151

Tailwind Shades

50
#F6F7F8
100
#EBECEF
200
#D6D8E1
300
#B9BCCB
400
#9398AF
500
#6D7392
600
#575C75
700
#454A5E
800
#363A49
900
#2A2C37
950
#1A1C23

Contrast Checker

Text on white

9.79:1

AA Pass AAA Pass

Text on black

2.15:1

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