#403F4B

#403F4B

Color Values

HEX

#403F4B

RGB

64, 63, 75

HSL

245.0, 8.7%, 27.1%

HSV

245.0, 16.0%, 29.4%

CMYK

14.7%, 16.0%, 0.0%, 70.6%

OKLCH

0.3733 0.0204 289.2

Properties

Cool Dark Nearest: RAL 7015 Slate Grey

Color Harmonies

Complementary

#403F4B

#4A4B3F

Analogous

#3F444B

#463F4B

#403F4B

Triadic

#403F4B

#4B403F

#3F4B40

Split Complementary

#403F4B

#4B463F

#444B3F

Tetradic

#403F4B

#4B3F44

#4A4B3F

#3F4B46

Color Blindness Simulation

Original

#403F4B

Protanopia

#404048

Deuteranopia

#404047

Tritanopia

#404645

Achromatopsia

#404040

CSS Usage

background-color: #403F4B;
color: #403F4B;
border-color: #403F4B;
Nearest Tailwind: Zinc 700 #3F3F46

Tailwind Shades

50
#F7F7F8
100
#ECECEE
200
#D9D8DE
300
#BDBCC7
400
#9A98A9
500
#76748B
600
#5F5D6F
700
#4C4B59
800
#3B3A45
900
#2D2D34
950
#1D1C21

Contrast Checker

Text on white

10.34:1

AA Pass AAA Pass

Text on black

2.03:1

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