#427FBC

#427FBC

Color Values

HEX

#427FBC

RGB

66, 127, 188

HSL

210.0, 48.0%, 49.8%

HSV

210.0, 64.9%, 73.7%

CMYK

64.9%, 32.4%, 0.0%, 26.3%

OKLCH

0.5835 0.1137 250.4

Properties

Cool Light Nearest: RAL 5012 Light Blue

Color Harmonies

Complementary

#427FBC

#BC7F42

Analogous

#42BCBC

#4242BC

#427FBC

Triadic

#427FBC

#BC427F

#7FBC42

Split Complementary

#427FBC

#BC4242

#BCBC42

Tetradic

#427FBC

#BC42BC

#BC7F42

#42BC42

Color Blindness Simulation

Original

#427FBC

Protanopia

#5C5DAD

Deuteranopia

#5954AA

Tritanopia

#45A29F

Achromatopsia

#767676

CSS Usage

background-color: #427FBC;
color: #427FBC;
border-color: #427FBC;
Nearest Tailwind: Sky 600 #0284C7

Tailwind Shades

50
#F4F7FA
100
#E6EDF4
200
#CADBEC
300
#A4C2DF
400
#73A1CE
500
#4280BD
600
#356697
700
#2A5279
800
#21405E
900
#1C3045
950
#111F2C

Contrast Checker

Text on white

4.21:1

AA Fail AAA Fail

Text on black

4.99:1

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