#123C71

#123C71

Color Values

HEX

#123C71

RGB

18, 60, 113

HSL

213.5, 72.5%, 25.7%

HSV

213.5, 84.1%, 44.3%

CMYK

84.1%, 46.9%, 0.0%, 55.7%

OKLCH

0.3589 0.1024 256.2

Properties

Cool Dark Nearest: RAL 5017 Traffic Blue

Color Harmonies

Complementary

#123C71

#714712

Analogous

#126C71

#181271

#123C71

Triadic

#123C71

#71123C

#3C7112

Split Complementary

#123C71

#711812

#6C7112

Tetradic

#123C71

#71126C

#714712

#127118

Color Blindness Simulation

Original

#123C71

Protanopia

#242564

Deuteranopia

#221F61

Tritanopia

#145A58

Achromatopsia

#373737

CSS Usage

background-color: #123C71;
color: #123C71;
border-color: #123C71;
Nearest Tailwind: Blue 950 #172554

Tailwind Shades

50
#F3F7FC
100
#E2ECF8
200
#C1D8F5
300
#95BDEE
400
#5C99E5
500
#2375DC
600
#1C5DB0
700
#164B8D
800
#123A6E
900
#112D50
950
#0B1C33

Contrast Checker

Text on white

10.99:1

AA Pass AAA Pass

Text on black

1.91:1

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