#3F448D

#3F448D

Color Values

HEX

#3F448D

RGB

63, 68, 141

HSL

236.2, 38.2%, 40.0%

HSV

236.2, 55.3%, 55.3%

CMYK

55.3%, 51.8%, 0.0%, 44.7%

OKLCH

0.4222 0.119 277.1

Properties

Cool Dark Nearest: royalblue 4

Color Harmonies

Complementary

#3F448D

#8D883F

Analogous

#3F6B8D

#613F8D

#3F448D

Triadic

#3F448D

#8D3F44

#448D3F

Split Complementary

#3F448D

#8D613F

#6B8D3F

Tetradic

#3F448D

#8D3F6B

#8D883F

#3F8D61

Color Blindness Simulation

Original

#3F448D

Protanopia

#41417B

Deuteranopia

#414077

Tritanopia

#3F6D6A

Achromatopsia

#484848

CSS Usage

background-color: #3F448D;
color: #3F448D;
border-color: #3F448D;
Nearest Tailwind: Blue 900 #1E3A8A

Tailwind Shades

50
#F5F5FA
100
#E7E8F3
200
#CECFE9
300
#AAADD9
400
#7D81C5
500
#4F55B0
600
#3F448D
700
#323671
800
#272A58
900
#202241
950
#141529

Contrast Checker

Text on white

8.67:1

AA Pass AAA Pass

Text on black

2.42:1

AA Fail AAA Fail

Related Articles

Color Questions

What Is Pantone? The Universal Color Language

Feb 20, 2026
Color Questions

What Is Metamerism? Why Colors Look Different Under Different Lights

Feb 20, 2026
Color Questions

What Is Luminance? Brightness in Color Science

Feb 20, 2026