#287C89

#287C89

Color Values

HEX

#287C89

RGB

40, 124, 137

HSL

188.0, 54.8%, 34.7%

HSV

188.0, 70.8%, 53.7%

CMYK

70.8%, 9.5%, 0.0%, 46.3%

OKLCH

0.5425 0.0804 209.7

Properties

Cool Dark Nearest: RAL 5018 Turquoise Blue

Color Harmonies

Complementary

#287C89

#893528

Analogous

#288965

#284C89

#287C89

Triadic

#287C89

#89287C

#7C8928

Split Complementary

#287C89

#89284C

#896528

Tetradic

#287C89

#652889

#893528

#4C8928

Color Blindness Simulation

Original

#287C89

Protanopia

#4C4D86

Deuteranopia

#484185

Tritanopia

#2C8383

Achromatopsia

#6B6B6B

CSS Usage

background-color: #287C89;
color: #287C89;
border-color: #287C89;
Nearest Tailwind: Cyan 700 #0E7490

Tailwind Shades

50
#F4FAFB
100
#E5F3F5
200
#C8EAEF
300
#A0DAE3
400
#6DC7D4
500
#3AB3C5
600
#2E8F9E
700
#25727E
800
#1D5963
900
#194248
950
#102A2E

Contrast Checker

Text on white

4.84:1

AA Pass AAA Fail

Text on black

4.33:1

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