#123741

#123741

Color Values

HEX

#123741

RGB

18, 55, 65

HSL

192.8, 56.6%, 16.3%

HSV

192.8, 72.3%, 25.5%

CMYK

72.3%, 15.4%, 0.0%, 74.5%

OKLCH

0.3151 0.045 218.7

Properties

Cool Dark Nearest: RAL 6004 Blue Green

Color Harmonies

Complementary

#123741

#411C12

Analogous

#124134

#122041

#123741

Triadic

#123741

#411237

#374112

Split Complementary

#123741

#411220

#413412

Tetradic

#123741

#341241

#411C12

#204112

Color Blindness Simulation

Original

#123741

Protanopia

#22223F

Deuteranopia

#201D3E

Tritanopia

#143D3C

Achromatopsia

#303030

CSS Usage

background-color: #123741;
color: #123741;
border-color: #123741;
Nearest Tailwind: Cyan 950 #083344

Tailwind Shades

50
#F4F9FB
100
#E5F2F6
200
#C7E7F0
300
#9FD6E4
400
#6BBFD6
500
#37A9C8
600
#2C87A0
700
#236C80
800
#1C5464
900
#183F49
950
#0F282E

Contrast Checker

Text on white

12.74:1

AA Pass AAA Pass

Text on black

1.65:1

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