#28437F

#28437F

Color Values

HEX

#28437F

RGB

40, 67, 127

HSL

221.4, 52.1%, 32.7%

HSV

221.4, 68.5%, 49.8%

CMYK

68.5%, 47.2%, 0.0%, 50.2%

OKLCH

0.3951 0.1065 264.0

Properties

Cool Dark Nearest: RAL 5017 Traffic Blue

Color Harmonies

Complementary

#28437F

#7F6428

Analogous

#286E7F

#38287F

#28437F

Triadic

#28437F

#7F2843

#437F28

Split Complementary

#28437F

#7F3828

#6E7F28

Tetradic

#28437F

#7F286E

#7F6428

#287F38

Color Blindness Simulation

Original

#28437F

Protanopia

#343470

Deuteranopia

#32306D

Tritanopia

#296562

Achromatopsia

#424242

CSS Usage

background-color: #28437F;
color: #28437F;
border-color: #28437F;
Nearest Tailwind: Blue 900 #1E3A8A

Tailwind Shades

50
#F4F6FB
100
#E5EAF5
200
#C9D4EE
300
#A2B6E2
400
#6F8ED2
500
#3D66C2
600
#31529B
700
#27417C
800
#1F3361
900
#1A2847
950
#10192D

Contrast Checker

Text on white

9.55:1

AA Pass AAA Pass

Text on black

2.2:1

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