#3F387F

#3F387F

Color Values

HEX

#3F387F

RGB

63, 56, 127

HSL

245.9, 38.8%, 35.9%

HSV

245.9, 55.9%, 49.8%

CMYK

50.4%, 55.9%, 0.0%, 50.2%

OKLCH

0.3878 0.1158 284.1

Properties

Cool Dark Nearest: darkslateblue

Color Harmonies

Complementary

#3F387F

#787F38

Analogous

#38557F

#63387F

#3F387F

Triadic

#3F387F

#7F3F38

#387F3F

Split Complementary

#3F387F

#7F6338

#557F38

Tetradic

#3F387F

#7F3855

#787F38

#387F63

Color Blindness Simulation

Original

#3F387F

Protanopia

#3C3C6E

Deuteranopia

#3C3D6A

Tritanopia

#3F605D

Achromatopsia

#3F3F3F

CSS Usage

background-color: #3F387F;
color: #3F387F;
border-color: #3F387F;
Nearest Tailwind: Blue 900 #1E3A8A

Tailwind Shades

50
#F5F5FA
100
#E8E7F3
200
#D0CDE9
300
#AFAADA
400
#837CC5
500
#584EB1
600
#463E8E
700
#383271
800
#2C2758
900
#232041
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

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