#284253

#284253

Color Values

HEX

#284253

RGB

40, 66, 83

HSL

203.7, 35.0%, 24.1%

HSV

203.7, 51.8%, 32.5%

CMYK

51.8%, 20.5%, 0.0%, 67.5%

OKLCH

0.3658 0.0434 238.3

Properties

Cool Dark Nearest: RAL 5020 Ocean Blue

Color Harmonies

Complementary

#284253

#533928

Analogous

#28534E

#282C53

#284253

Triadic

#284253

#532842

#425328

Split Complementary

#284253

#53282C

#534E28

Tetradic

#284253

#4E2853

#533928

#2C5328

Color Blindness Simulation

Original

#284253

Protanopia

#33334F

Deuteranopia

#32304E

Tritanopia

#294C4B

Achromatopsia

#3E3E3E

CSS Usage

background-color: #284253;
color: #284253;
border-color: #284253;
Nearest Tailwind: Slate 700 #334155

Tailwind Shades

50
#F5F8FA
100
#E8EEF2
200
#CFDEE8
300
#ACC6D7
400
#80A8C2
500
#5389AC
600
#426D8A
700
#35586E
800
#294456
900
#213440
950
#152128

Contrast Checker

Text on white

10.53:1

AA Pass AAA Pass

Text on black

1.99:1

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