#399CAA

#399CAA

Color Values

HEX

#399CAA

RGB

57, 156, 170

HSL

187.4, 49.8%, 44.5%

HSV

187.4, 66.5%, 66.7%

CMYK

66.5%, 8.2%, 0.0%, 33.3%

OKLCH

0.6414 0.0921 208.3

Properties

Cool Light Nearest: NCS S 1050-B20G Cyan

Color Harmonies

Complementary

#399CAA

#AA4739

Analogous

#39AA7F

#3964AA

#399CAA

Triadic

#399CAA

#AA399C

#9CAA39

Split Complementary

#399CAA

#AA3964

#AA7F39

Tetradic

#399CAA

#7F39AA

#AA4739

#64AA39

Color Blindness Simulation

Original

#399CAA

Protanopia

#6465A7

Deuteranopia

#5E57A6

Tritanopia

#3EA4A3

Achromatopsia

#888888

CSS Usage

background-color: #399CAA;
color: #399CAA;
border-color: #399CAA;
Nearest Tailwind: Cyan 600 #0891B2

Tailwind Shades

50
#F4FAFB
100
#E6F3F5
200
#CAE9ED
300
#A3D9E0
400
#72C4D0
500
#40AFBF
600
#338C99
700
#29707A
800
#20585F
900
#1B4146
950
#11292C

Contrast Checker

Text on white

3.23:1

AA Fail AAA Fail

Text on black

6.51:1

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