#3F5164

#3F5164

Color Values

HEX

#3F5164

RGB

63, 81, 100

HSL

210.8, 22.7%, 32.0%

HSV

210.8, 37.0%, 39.2%

CMYK

37.0%, 19.0%, 0.0%, 60.8%

OKLCH

0.4276 0.0389 250.1

Properties

Cool Dark Nearest: RAL 7015 Slate Grey

Color Harmonies

Complementary

#3F5164

#64523F

Analogous

#3F6464

#403F64

#3F5164

Triadic

#3F5164

#643F51

#51643F

Split Complementary

#3F5164

#64403F

#64643F

Tetradic

#3F5164

#643F64

#64523F

#3F6440

Color Blindness Simulation

Original

#3F5164

Protanopia

#47475F

Deuteranopia

#46445E

Tritanopia

#405C5B

Achromatopsia

#4F4F4F

CSS Usage

background-color: #3F5164;
color: #3F5164;
border-color: #3F5164;
Nearest Tailwind: Slate 600 #475569

Tailwind Shades

50
#F6F7F9
100
#EAEDF1
200
#D3DBE3
300
#B4C1D0
400
#8BA0B6
500
#637F9C
600
#4F657D
700
#3F5164
800
#313F4E
900
#27303A
950
#181E25

Contrast Checker

Text on white

8.16:1

AA Pass AAA Pass

Text on black

2.57:1

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