#3F5771

#3F5771

Color Values

HEX

#3F5771

RGB

63, 87, 113

HSL

211.2, 28.4%, 34.5%

HSV

211.2, 44.2%, 44.3%

CMYK

44.2%, 23.0%, 0.0%, 55.7%

OKLCH

0.4484 0.052 251.0

Properties

Cool Dark Nearest: RAL 5000 Violet Blue

Color Harmonies

Complementary

#3F5771

#71593F

Analogous

#3F7071

#403F71

#3F5771

Triadic

#3F5771

#713F57

#57713F

Split Complementary

#3F5771

#71403F

#70713F

Tetradic

#3F5771

#713F70

#71593F

#3F7140

Color Blindness Simulation

Original

#3F5771

Protanopia

#494A6B

Deuteranopia

#484669

Tritanopia

#406665

Achromatopsia

#545454

CSS Usage

background-color: #3F5771;
color: #3F5771;
border-color: #3F5771;
Nearest Tailwind: Slate 600 #475569

Tailwind Shades

50
#F6F7F9
100
#E9EDF1
200
#D1DBE5
300
#B0C1D3
400
#86A0BB
500
#5B7EA4
600
#496583
700
#3A5169
800
#2E3F52
900
#24303D
950
#171E26

Contrast Checker

Text on white

7.47:1

AA Pass AAA Pass

Text on black

2.81:1

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