#288F99

#288F99

Color Values

HEX

#288F99

RGB

40, 143, 153

HSL

185,3, 58,5%, 37,8%

HSV

185,3, 73,9%, 60,0%

CMYK

73,9%, 6,5%, 0,0%, 40,0%

OKLCH

0,5977 0,0912 204,6

Properties

Cool Light Nearest: turquoise 4

Color Harmonies

Complementary

#288F99

#993228

Analogous

#28996A

#285699

#288F99

Triadic

#288F99

#99288F

#8F9928

Split Complementary

#288F99

#992856

#996A28

Tetradic

#288F99

#6A2899

#993228

#569928

Color Blindness Simulation

Original

#288F99

Protanopia

#555597

Deuteranopia

#4F4796

Tritanopia

#2D9594

Achromatopsia

#7A7A7A

CSS Usage

background-color: #288F99;
color: #288F99;
border-color: #288F99;
Nearest Tailwind: Cyan 600 #0891B2

Tailwind Shades

50
#F4FAFB
100
#E4F4F6
200
#C6ECF0
300
#9EDFE6
400
#69CED8
500
#35BDCA
600
#2A97A2
700
#227981
800
#1A5E65
900
#17454A
950
#0E2C2F

Contrast Checker

Text on white

3,83:1

AA Fail AAA Fail

Text on black

5,48:1

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