#3F3B5D

#3F3B5D

Color Values

HEX

#3F3B5D

RGB

63, 59, 93

HSL

247.1, 22.4%, 29.8%

HSV

247.1, 36.6%, 36.5%

CMYK

32.3%, 36.6%, 0.0%, 63.5%

OKLCH

0.3718 0.0577 288.7

Properties

Cool Dark Nearest: RAL 5022 Night Blue

Color Harmonies

Complementary

#3F3B5D

#595D3B

Analogous

#3B485D

#503B5D

#3F3B5D

Triadic

#3F3B5D

#5D3F3B

#3B5D3F

Split Complementary

#3F3B5D

#5D503B

#485D3B

Tetradic

#3F3B5D

#5D3B48

#595D3B

#3B5D50

Color Blindness Simulation

Original

#3F3B5D

Protanopia

#3D3D55

Deuteranopia

#3E3E53

Tritanopia

#3F4E4D

Achromatopsia

#3E3E3E

CSS Usage

background-color: #3F3B5D;
color: #3F3B5D;
border-color: #3F3B5D;
Nearest Tailwind: Slate 700 #334155

Tailwind Shades

50
#F6F6F9
100
#EBEAF1
200
#D5D3E3
300
#B7B4D0
400
#918CB6
500
#6A639C
600
#554F7D
700
#443F64
800
#35314E
900
#29273A
950
#1A1825

Contrast Checker

Text on white

10.53:1

AA Pass AAA Pass

Text on black

2.0:1

AA Fail AAA Fail

Related Articles

Tutorials

CSS color-mix(): Blend Colors Natively in the Browser

Jan 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

Jan 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

Jan 15, 2026