#3F3D55

#3F3D55

Color Values

HEX

#3F3D55

RGB

63, 61, 85

HSL

245.0, 16.4%, 28.6%

HSV

245.0, 28.2%, 33.3%

CMYK

25.9%, 28.2%, 0.0%, 66.7%

OKLCH

0.3722 0.0409 288.1

Properties

Cool Dark Nearest: RAL 5020 Ocean Blue

Color Harmonies

Complementary

#3F3D55

#53553D

Analogous

#3D4755

#4B3D55

#3F3D55

Triadic

#3F3D55

#553F3D

#3D553F

Split Complementary

#3F3D55

#554B3D

#47553D

Tetradic

#3F3D55

#553D47

#53553D

#3D554B

Color Blindness Simulation

Original

#3F3D55

Protanopia

#3E3E4F

Deuteranopia

#3E3E4E

Tritanopia

#3F4B4A

Achromatopsia

#3F3F3F

CSS Usage

background-color: #3F3D55;
color: #3F3D55;
border-color: #3F3D55;
Nearest Tailwind: Slate 700 #334155

Tailwind Shades

50
#F6F6F8
100
#EBEBF0
200
#D6D5E1
300
#B9B8CC
400
#9491B0
500
#6E6B94
600
#585577
700
#46445F
800
#37354A
900
#2A2938
950
#1B1A23

Contrast Checker

Text on white

10.45:1

AA Pass AAA Pass

Text on black

2.01:1

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