#428791

#428791

Color Values

HEX

#428791

RGB

66, 135, 145

HSL

187.6, 37.4%, 41.4%

HSV

187.6, 54.5%, 56.9%

CMYK

54.5%, 6.9%, 0.0%, 43.1%

OKLCH

0.5827 0.071 207.9

Properties

Cool Light Nearest: RAL 5018 Turquoise Blue

Color Harmonies

Complementary

#428791

#914C42

Analogous

#429174

#426091

#428791

Triadic

#428791

#914287

#879142

Split Complementary

#428791

#914260

#917442

Tetradic

#428791

#744291

#914C42

#609142

Color Blindness Simulation

Original

#428791

Protanopia

#60608F

Deuteranopia

#5C578E

Tritanopia

#458D8C

Achromatopsia

#797979

CSS Usage

background-color: #428791;
color: #428791;
border-color: #428791;
Nearest Tailwind: Cyan 700 #0E7490

Tailwind Shades

50
#F5F9FA
100
#E7F1F3
200
#CEE5E9
300
#ABD3D9
400
#7DBBC4
500
#50A3AF
600
#40828C
700
#336870
800
#285258
900
#203D41
950
#142629

Contrast Checker

Text on white

4.11:1

AA Fail AAA Fail

Text on black

5.11:1

AA Pass 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