#284D58

#284D58

Color Values

HEX

#284D58

RGB

40, 77, 88

HSL

193.8, 37.5%, 25.1%

HSV

193.8, 54.5%, 34.5%

CMYK

54.5%, 12.5%, 0.0%, 65.5%

OKLCH

0.3974 0.0462 219.3

Properties

Cool Dark Nearest: darkslategrey

Color Harmonies

Complementary

#284D58

#583328

Analogous

#28584B

#283558

#284D58

Triadic

#284D58

#58284D

#4D5828

Split Complementary

#284D58

#582835

#584B28

Tetradic

#284D58

#4B2858

#583328

#355828

Color Blindness Simulation

Original

#284D58

Protanopia

#383855

Deuteranopia

#363355

Tritanopia

#2A5353

Achromatopsia

#464646

CSS Usage

background-color: #284D58;
color: #284D58;
border-color: #284D58;
Nearest Tailwind: Cyan 900 #164E63

Tailwind Shades

50
#F5F9FA
100
#E7F0F3
200
#CEE3E9
300
#ABCED9
400
#7DB4C4
500
#5099AF
600
#407B8C
700
#336270
800
#284D58
900
#203941
950
#142429

Contrast Checker

Text on white

9.16:1

AA Pass AAA Pass

Text on black

2.29:1

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