#3F408C

#3F408C

Color Values

HEX

#3F408C

RGB

63, 64, 140

HSL

239.2, 37.9%, 39.8%

HSV

239.2, 55.0%, 54.9%

CMYK

55.0%, 54.3%, 0.0%, 45.1%

OKLCH

0.4133 0.1232 279.0

Properties

Cool Dark Nearest: darkslateblue

Color Harmonies

Complementary

#3F408C

#8C8B3F

Analogous

#3F678C

#643F8C

#3F408C

Triadic

#3F408C

#8C3F40

#408C3F

Split Complementary

#3F408C

#8C643F

#678C3F

Tetradic

#3F408C

#8C3F67

#8C8B3F

#3F8C64

Color Blindness Simulation

Original

#3F408C

Protanopia

#3F3F7A

Deuteranopia

#3F3F75

Tritanopia

#3F6B68

Achromatopsia

#454545

CSS Usage

background-color: #3F408C;
color: #3F408C;
border-color: #3F408C;
Nearest Tailwind: Blue 900 #1E3A8A

Tailwind Shades

50
#F5F5FA
100
#E7E8F3
200
#CECEE9
300
#ABABD9
400
#7D7EC4
500
#4F50B0
600
#3F408D
700
#333371
800
#282858
900
#202041
950
#141429

Contrast Checker

Text on white

9.04:1

AA Pass AAA Pass

Text on black

2.32:1

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