#231B17

#231B17

Color Values

HEX

#231B17

RGB

35, 27, 23

HSL

20.0, 20.7%, 11.4%

HSV

20.0, 34.3%, 13.7%

CMYK

0.0%, 22.9%, 34.3%, 86.3%

OKLCH

0.2303 0.0148 48.1

Properties

Warm Dark Nearest: RAL 6022 Olive Drab

Color Harmonies

Complementary

#231B17

#171F23

Analogous

#231719

#232117

#231B17

Triadic

#231B17

#17231B

#1B1723

Split Complementary

#231B17

#172321

#171923

Tetradic

#231B17

#192317

#171F23

#211723

Color Blindness Simulation

Original

#231B17

Protanopia

#201F18

Deuteranopia

#202118

Tritanopia

#231919

Achromatopsia

#1C1C1C

CSS Usage

background-color: #231B17;
color: #231B17;
border-color: #231B17;
Nearest Tailwind: Stone 900 #1C1917

Tailwind Shades

50
#F9F7F6
100
#F0ECEA
200
#E3D9D4
300
#CEBEB5
400
#B49A8D
500
#9A7765
600
#7B5F51
700
#624C41
800
#4D3B33
900
#392D27
950
#241D19

Contrast Checker

Text on white

16.93:1

AA Pass AAA Pass

Text on black

1.24:1

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