#4278BC

#4278BC

Color Values

HEX

#4278BC

RGB

66, 120, 188

HSL

213.4, 48.0%, 49.8%

HSV

213.4, 64.9%, 73.7%

CMYK

64.9%, 36.2%, 0.0%, 26.3%

OKLCH

0.5676 0.1205 255.2

Properties

Cool Light Nearest: RAL 5015 Sky Blue

Color Harmonies

Complementary

#4278BC

#BC8642

Analogous

#42B5BC

#4942BC

#4278BC

Triadic

#4278BC

#BC4278

#78BC42

Split Complementary

#4278BC

#BC4942

#B5BC42

Tetradic

#4278BC

#BC42B5

#BC8642

#42BC49

Color Blindness Simulation

Original

#4278BC

Protanopia

#595AAC

Deuteranopia

#5652A8

Tritanopia

#459F9C

Achromatopsia

#717171

CSS Usage

background-color: #4278BC;
color: #4278BC;
border-color: #4278BC;
Nearest Tailwind: Sky 600 #0284C7

Tailwind Shades

50
#F4F7FA
100
#E6ECF4
200
#CAD9EC
300
#A4BEDF
400
#739CCE
500
#4279BD
600
#356097
700
#2A4D79
800
#213C5E
900
#1C2E45
950
#111D2C

Contrast Checker

Text on white

4.52:1

AA Pass AAA Fail

Text on black

4.64:1

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