#40474E

#40474E

Color Values

HEX

#40474E

RGB

64, 71, 78

HSL

210.0, 9.9%, 27.8%

HSV

210.0, 17.9%, 30.6%

CMYK

17.9%, 9.0%, 0.0%, 69.4%

OKLCH

0.3942 0.015 248.2

Properties

Cool Dark Nearest: RAL 7015 Slate Grey

Color Harmonies

Complementary

#40474E

#4E4740

Analogous

#404E4E

#40404E

#40474E

Triadic

#40474E

#4E4047

#474E40

Split Complementary

#40474E

#4E4040

#4E4E40

Tetradic

#40474E

#4E404E

#4E4740

#404E40

Color Blindness Simulation

Original

#40474E

Protanopia

#43434C

Deuteranopia

#43424C

Tritanopia

#404B4B

Achromatopsia

#464646

CSS Usage

background-color: #40474E;
color: #40474E;
border-color: #40474E;
Nearest Tailwind: Zinc 700 #3F3F46

Tailwind Shades

50
#F7F7F8
100
#ECEDEF
200
#D8DBDF
300
#BCC2C8
400
#97A1AA
500
#73808C
600
#5C6670
700
#4A525A
800
#394046
900
#2C3035
950
#1C1F21

Contrast Checker

Text on white

9.42:1

AA Pass AAA Pass

Text on black

2.23:1

AA Fail AAA Fail

Related Articles

Brand Stories

Pantone Colors by Decade: The 2000s, 2010s, and 2020s Compared

Feb 01, 2026
Tutorials

Responsive Color: Adapting Colors for Different Screens

Jan 23, 2026
Tutorials

Color for Data Storytelling: Beyond Default Chart Colors

Jan 21, 2026