#284340

#284340

Color Values

HEX

#284340

RGB

40, 67, 64

HSL

173.3, 25.2%, 21.0%

HSV

173.3, 40.3%, 26.3%

CMYK

40.3%, 0.0%, 4.5%, 73.7%

OKLCH

0.3602 0.0334 186.9

Properties

Cool Dark Nearest: darkslategrey

Color Harmonies

Complementary

#284340

#43282B

Analogous

#284333

#283943

#284340

Triadic

#284340

#402843

#434028

Split Complementary

#284340

#432839

#433328

Tetradic

#284340

#332843

#43282B

#394328

Color Blindness Simulation

Original

#284340

Protanopia

#343441

Deuteranopia

#323041

Tritanopia

#294141

Achromatopsia

#3D3D3D

CSS Usage

background-color: #284340;
color: #284340;
border-color: #284340;
Nearest Tailwind: Teal 900 #134E4A

Tailwind Shades

50
#F6F9F9
100
#E9F1F0
200
#D2E4E2
300
#B2D1CE
400
#89B8B3
500
#5FA098
600
#4C807A
700
#3D6662
800
#30504C
900
#253B39
950
#182624

Contrast Checker

Text on white

10.68:1

AA Pass AAA Pass

Text on black

1.97:1

AA Fail AAA Fail

Related Articles

Tutorials

Building a Color Picker Web Component from Scratch

Feb 20, 2026
Tutorials

Web Color Performance: Gradients, Shadows, and Filters

Feb 19, 2026
Tutorials

Tailwind CSS Colors: Complete Shade System Guide

Feb 19, 2026