#123F42

#123F42

Color Values

HEX

#123F42

RGB

18, 63, 66

HSL

183.8, 57.1%, 16.5%

HSV

183.8, 72.7%, 25.9%

CMYK

72.7%, 4.5%, 0.0%, 74.1%

OKLCH

0.3389 0.0481 201.4

Properties

Cool Dark Nearest: RAL 6004 Blue Green

Color Harmonies

Complementary

#123F42

#421512

Analogous

#12422D

#122742

#123F42

Triadic

#123F42

#42123F

#3F4212

Split Complementary

#123F42

#421227

#422D12

Tetradic

#123F42

#2D1242

#421512

#274212

Color Blindness Simulation

Original

#123F42

Protanopia

#252641

Deuteranopia

#232041

Tritanopia

#144141

Achromatopsia

#363636

CSS Usage

background-color: #123F42;
color: #123F42;
border-color: #123F42;
Nearest Tailwind: Teal 950 #042F2E

Tailwind Shades

50
#F4FBFB
100
#E4F5F6
200
#C7EDF0
300
#9FE0E5
400
#6BD0D7
500
#37BFC8
600
#2C99A0
700
#237A80
800
#1B6064
900
#184649
950
#0F2C2E

Contrast Checker

Text on white

11.57:1

AA Pass AAA Pass

Text on black

1.82:1

AA Fail AAA Fail

Related Articles

Brand Stories

Pantone Colors by Decade: The 2000s, 2010s, and 2020s Compared

Feb 01, 2026
Tutorials

Responsive Color: Adapting Colors for Different Screens

Jan 23, 2026
Tutorials

Color for Data Storytelling: Beyond Default Chart Colors

Jan 21, 2026