#289EB1

#289EB1

Color Values

HEX

#289EB1

RGB

40, 158, 177

HSL

188.3, 63.1%, 42.5%

HSV

188.3, 77.4%, 69.4%

CMYK

77.4%, 10.7%, 0.0%, 30.6%

OKLCH

0.645 0.1025 211.1

Properties

Cool Light Nearest: NCS S 1050-B20G Cyan

Color Harmonies

Complementary

#289EB1

#B13B28

Analogous

#28B17F

#2859B1

#289EB1

Triadic

#289EB1

#B1289E

#9EB128

Split Complementary

#289EB1

#B12859

#B17F28

Tetradic

#289EB1

#7F28B1

#B13B28

#59B128

Color Blindness Simulation

Original

#289EB1

Protanopia

#5B5CAC

Deuteranopia

#544BAB

Tritanopia

#2EA9A8

Achromatopsia

#868686

CSS Usage

background-color: #289EB1;
color: #289EB1;
border-color: #289EB1;
Nearest Tailwind: Cyan 600 #0891B2

Tailwind Shades

50
#F3FAFB
100
#E4F4F7
200
#C5ECF2
300
#9BDEE8
400
#65CCDC
500
#2FBAD0
600
#2695A6
700
#1E7785
800
#185D68
900
#15444C
950
#0D2B30

Contrast Checker

Text on white

3.17:1

AA Fail AAA Fail

Text on black

6.62:1

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