#3F525E

#3F525E

Color Values

HEX

#3F525E

RGB

63, 82, 94

HSL

203,2, 19,7%, 30,8%

HSV

203,2, 33,0%, 36,9%

CMYK

33,0%, 12,8%, 0,0%, 63,1%

OKLCH

0,4274 0,0309 236,2

Properties

Cool Dark Nearest: RAL 7015 Slate Grey

Color Harmonies

Complementary

#3F525E

#5E4B3F

Analogous

#3F5E5B

#3F435E

#3F525E

Triadic

#3F525E

#5E3F52

#525E3F

Split Complementary

#3F525E

#5E3F43

#5E5B3F

Tetradic

#3F525E

#5B3F5E

#5E4B3F

#435E3F

Color Blindness Simulation

Original

#3F525E

Protanopia

#47475B

Deuteranopia

#46455A

Tritanopia

#405958

Achromatopsia

#4F4F4F

CSS Usage

background-color: #3F525E;
color: #3F525E;
border-color: #3F525E;
Nearest Tailwind: Gray 600 #4B5563

Tailwind Shades

50
#F6F8F9
100
#EAEEF0
200
#D4DDE2
300
#B6C5CE
400
#8EA5B3
500
#668599
600
#526B7A
700
#425562
800
#33434C
900
#283239
950
#192024

Contrast Checker

Text on white

8,14:1

AA Pass AAA Pass

Text on black

2,58:1

AA Fail AAA Fail

Related Articles

Tutorials

CSS color-mix(): Blend Colors Natively in the Browser

Jan 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

Jan 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

Jan 15, 2026