#3F397B

#3F397B

Color Values

HEX

#3F397B

RGB

63, 57, 123

HSL

245.5, 36.7%, 35.3%

HSV

245.5, 53.7%, 48.2%

CMYK

48.8%, 53.7%, 0.0%, 51.8%

OKLCH

0.3868 0.1084 284.2

Properties

Cool Dark Nearest: darkslateblue

Color Harmonies

Complementary

#3F397B

#757B39

Analogous

#39547B

#60397B

#3F397B

Triadic

#3F397B

#7B3F39

#397B3F

Split Complementary

#3F397B

#7B6039

#547B39

Tetradic

#3F397B

#7B3954

#757B39

#397B60

Color Blindness Simulation

Original

#3F397B

Protanopia

#3C3C6B

Deuteranopia

#3D3D67

Tritanopia

#3F5E5C

Achromatopsia

#3F3F3F

CSS Usage

background-color: #3F397B;
color: #3F397B;
border-color: #3F397B;
Nearest Tailwind: Blue 900 #1E3A8A

Tailwind Shades

50
#F5F5FA
100
#E9E8F3
200
#D1CEE8
300
#AFABD8
400
#847EC3
500
#5951AE
600
#47418B
700
#393470
800
#2D2857
900
#232040
950
#161429

Contrast Checker

Text on white

10.08:1

AA Pass AAA Pass

Text on black

2.08:1

AA Fail AAA Fail

Related Articles

Tutorials

Building a Color Picker Web Component from Scratch

2월 20, 2026
Tutorials

Web Color Performance: Gradients, Shadows, and Filters

2월 19, 2026
Tutorials

Tailwind CSS Colors: Complete Shade System Guide

2월 19, 2026