#4273BD

#4273BD

Color Values

HEX

#4273BD

RGB

66, 115, 189

HSL

216.1, 48.2%, 50.0%

HSV

216.1, 65.1%, 74.1%

CMYK

65.1%, 39.2%, 0.0%, 25.9%

OKLCH

0.557 0.1273 258.4

Properties

Cool Dark Nearest: NCS S 1060-B Bright Blue

Color Harmonies

Complementary

#4273BD

#BD8C42

Analogous

#42B0BD

#4F42BD

#4273BD

Triadic

#4273BD

#BD4273

#73BD42

Split Complementary

#4273BD

#BD4F42

#B0BD42

Tetradic

#4273BD

#BD42B0

#BD8C42

#42BD4F

Color Blindness Simulation

Original

#4273BD

Protanopia

#5758AB

Deuteranopia

#5451A7

Tritanopia

#449D9A

Achromatopsia

#6E6E6E

CSS Usage

background-color: #4273BD;
color: #4273BD;
border-color: #4273BD;
Nearest Tailwind: Sky 600 #0284C7

Tailwind Shades

50
#F4F7FA
100
#E6ECF4
200
#CAD8ED
300
#A4BCDF
400
#7397CE
500
#4273BD
600
#355C97
700
#2A4A79
800
#213A5E
900
#1B2C45
950
#111C2C

Contrast Checker

Text on white

4.75:1

AA Pass AAA Fail

Text on black

4.42:1

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