#3F284B

#3F284B

Color Values

HEX

#3F284B

RGB

63, 40, 75

HSL

279.4, 30.4%, 22.5%

HSV

279.4, 46.7%, 29.4%

CMYK

16.0%, 46.7%, 0.0%, 70.6%

OKLCH

0.321 0.0667 313.3

Properties

Cool Dark Nearest: RAL 5022 Night Blue

Color Harmonies

Complementary

#3F284B

#344B28

Analogous

#2D284B

#4B2845

#3F284B

Triadic

#3F284B

#4B3F28

#284B3F

Split Complementary

#3F284B

#454B28

#284B2D

Tetradic

#3F284B

#4B2D28

#344B28

#28454B

Color Blindness Simulation

Original

#3F284B

Protanopia

#353543

Deuteranopia

#363840

Tritanopia

#3E3C3A

Achromatopsia

#2F2F2F

CSS Usage

background-color: #3F284B;
color: #3F284B;
border-color: #3F284B;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F8F5F9
100
#EFE9F2
200
#DFD0E6
300
#C8AFD4
400
#AA84BD
500
#8C59A6
600
#704785
700
#59396A
800
#462C53
900
#35233E
950
#211627

Contrast Checker

Text on white

12.99:1

AA Pass AAA Pass

Text on black

1.62:1

AA Fail AAA Fail

Related Articles

Tutorials

Responsive Color: Adapting Colors for Different Screens

Jan 23, 2026
Tutorials

Color for Data Storytelling: Beyond Default Chart Colors

Jan 21, 2026
Tutorials

How to Choose Brand Colors: A Step-by-Step Guide

Jan 18, 2026