#283E47

#283E47

Color Values

HEX

#283E47

RGB

40, 62, 71

HSL

197.4, 27.9%, 21.8%

HSV

197.4, 43.7%, 27.8%

CMYK

43.7%, 12.7%, 0.0%, 72.2%

OKLCH

0.3494 0.0317 225.5

Properties

Cool Dark Nearest: RAL 6004 Blue Green

Color Harmonies

Complementary

#283E47

#473128

Analogous

#284741

#282F47

#283E47

Triadic

#283E47

#47283E

#3E4728

Split Complementary

#283E47

#47282F

#474128

Tetradic

#283E47

#412847

#473128

#2F4728

Color Blindness Simulation

Original

#283E47

Protanopia

#323245

Deuteranopia

#302F44

Tritanopia

#294343

Achromatopsia

#3A3A3A

CSS Usage

background-color: #283E47;
color: #283E47;
border-color: #283E47;
Nearest Tailwind: Gray 700 #374151

Tailwind Shades

50
#F6F8F9
100
#E9EFF1
200
#D1DFE5
300
#B1C9D3
400
#86ACBB
500
#5C8EA3
600
#4A7282
700
#3B5B68
800
#2E4752
900
#24363D
950
#172226

Contrast Checker

Text on white

11.23:1

AA Pass AAA Pass

Text on black

1.87:1

AA Fail AAA Fail

Related Articles

Tutorials

CSS color-mix(): Blend Colors Natively in the Browser

Jan 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

Jan 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

Jan 15, 2026