#3F516B

#3F516B

Color Values

HEX

#3F516B

RGB

63, 81, 107

HSL

215.5, 25.9%, 33.3%

HSV

215.5, 41.1%, 42.0%

CMYK

41.1%, 24.3%, 0.0%, 58.0%

OKLCH

0.4309 0.0489 257.5

Properties

Cool Dark Nearest: RAL 5000 Violet Blue

Color Harmonies

Complementary

#3F516B

#6B593F

Analogous

#3F676B

#433F6B

#3F516B

Triadic

#3F516B

#6B3F51

#516B3F

Split Complementary

#3F516B

#6B433F

#676B3F

Tetradic

#3F516B

#6B3F67

#6B593F

#3F6B43

Color Blindness Simulation

Original

#3F516B

Protanopia

#474765

Deuteranopia

#464463

Tritanopia

#40605F

Achromatopsia

#4F4F4F

CSS Usage

background-color: #3F516B;
color: #3F516B;
border-color: #3F516B;
Nearest Tailwind: Slate 600 #475569

Tailwind Shades

50
#F6F7F9
100
#E9ECF1
200
#D2DAE5
300
#B2BFD2
400
#889CB9
500
#5E79A1
600
#4C6180
700
#3C4E67
800
#2F3D50
900
#252E3C
950
#171D26

Contrast Checker

Text on white

8.07:1

AA Pass AAA Pass

Text on black

2.6:1

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