#399EB0

#399EB0

Color Values

HEX

#399EB0

RGB

57, 158, 176

HSL

189.1, 51.1%, 45.7%

HSV

189.1, 67.6%, 69.0%

CMYK

67.6%, 10.2%, 0.0%, 31.0%

OKLCH

0.6487 0.0947 211.6

Properties

Cool Light Nearest: NCS S 1050-B20G Cyan

Color Harmonies

Complementary

#399EB0

#B04B39

Analogous

#39B087

#3962B0

#399EB0

Triadic

#399EB0

#B0399E

#9EB039

Split Complementary

#399EB0

#B03962

#B08739

Tetradic

#399EB0

#8739B0

#B04B39

#62B039

Color Blindness Simulation

Original

#399EB0

Protanopia

#6566AC

Deuteranopia

#5F57AB

Tritanopia

#3EA8A7

Achromatopsia

#8A8A8A

CSS Usage

background-color: #399EB0;
color: #399EB0;
border-color: #399EB0;
Nearest Tailwind: Cyan 600 #0891B2

Tailwind Shades

50
#F4FAFB
100
#E5F3F5
200
#C9E8EE
300
#A3D8E1
400
#70C2D1
500
#3EADC1
600
#328A9A
700
#286F7B
800
#1F5660
900
#1A4047
950
#11282D

Contrast Checker

Text on white

3.14:1

AA Fail AAA Fail

Text on black

6.69:1

AA Pass AAA Fail

Related Articles

Tutorials

Building a Color Picker Web Component from Scratch

ก.พ. 20, 2026
Tutorials

Web Color Performance: Gradients, Shadows, and Filters

ก.พ. 19, 2026
Tutorials

Tailwind CSS Colors: Complete Shade System Guide

ก.พ. 19, 2026