#427BBD

#427BBD

Color Values

HEX

#427BBD

RGB

66, 123, 189

HSL

212.2, 48.2%, 50.0%

HSV

212.2, 65.1%, 74.1%

CMYK

65.1%, 34.9%, 0.0%, 25.9%

OKLCH

0.575 0.1188 253.5

Properties

Cool Light Nearest: RAL 5015 Sky Blue

Color Harmonies

Complementary

#427BBD

#BD8442

Analogous

#42B8BD

#4742BD

#427BBD

Triadic

#427BBD

#BD427B

#7BBD42

Split Complementary

#427BBD

#BD4742

#B8BD42

Tetradic

#427BBD

#BD42B8

#BD8442

#42BD47

Color Blindness Simulation

Original

#427BBD

Protanopia

#5B5BAD

Deuteranopia

#5753A9

Tritanopia

#45A09E

Achromatopsia

#747474

CSS Usage

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

Tailwind Shades

50
#F4F7FA
100
#E6EDF4
200
#CADAED
300
#A4C0DF
400
#739DCE
500
#427BBD
600
#356297
700
#2A4F79
800
#213D5E
900
#1B2F45
950
#111E2C

Contrast Checker

Text on white

4.38:1

AA Fail AAA Fail

Text on black

4.8:1

AA Pass 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