#289DAF

#289DAF

Color Values

HEX

#289DAF

RGB

40, 157, 175

HSL

188.0, 62.8%, 42.2%

HSV

188.0, 77.1%, 68.6%

CMYK

77.1%, 10.3%, 0.0%, 31.4%

OKLCH

0.6417 0.1015 210.4

Properties

Cool Light Nearest: NCS S 1050-B20G Cyan

Color Harmonies

Complementary

#289DAF

#AF3A28

Analogous

#28AF7E

#285AAF

#289DAF

Triadic

#289DAF

#AF289D

#9DAF28

Split Complementary

#289DAF

#AF285A

#AF7E28

Tetradic

#289DAF

#7E28AF

#AF3A28

#5AAF28

Color Blindness Simulation

Original

#289DAF

Protanopia

#5B5CAB

Deuteranopia

#544BAA

Tritanopia

#2EA7A6

Achromatopsia

#858585

CSS Usage

background-color: #289DAF;
color: #289DAF;
border-color: #289DAF;
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
#15454C
950
#0D2B30

Contrast Checker

Text on white

3.21:1

AA Fail AAA Fail

Text on black

6.53:1

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