#309EB0

#309EB0

Color Values

HEX

#309EB0

RGB

48, 158, 176

HSL

188.4, 57.1%, 43.9%

HSV

188.4, 72.7%, 69.0%

CMYK

72.7%, 10.2%, 0.0%, 31.0%

OKLCH

0.6464 0.0989 210.8

Properties

Cool Light Nearest: NCS S 1050-B20G Cyan

Color Harmonies

Complementary

#309EB0

#B04230

Analogous

#30B082

#305EB0

#309EB0

Triadic

#309EB0

#B0309E

#9EB030

Split Complementary

#309EB0

#B0305E

#B08230

Tetradic

#309EB0

#8230B0

#B04230

#5EB030

Color Blindness Simulation

Original

#309EB0

Protanopia

#6061AC

Deuteranopia

#5951AB

Tritanopia

#35A8A7

Achromatopsia

#888888

CSS Usage

background-color: #309EB0;
color: #309EB0;
border-color: #309EB0;
Nearest Tailwind: Cyan 600 #0891B2

Tailwind Shades

50
#F4FAFB
100
#E4F3F6
200
#C7EAF0
300
#9FDBE5
400
#6BC7D7
500
#37B4C8
600
#2C90A0
700
#237380
800
#1B5A64
900
#184249
950
#0F2A2E

Contrast Checker

Text on white

3.16:1

AA Fail AAA Fail

Text on black

6.64:1

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