#123F7F

#123F7F

Color Values

HEX

#123F7F

RGB

18, 63, 127

HSL

215.2, 75.2%, 28.4%

HSV

215.2, 85.8%, 49.8%

CMYK

85.8%, 50.4%, 0.0%, 50.2%

OKLCH

0.3769 0.1188 258.2

Properties

Cool Dark Nearest: RAL 5017 Traffic Blue

Color Harmonies

Complementary

#123F7F

#7F5212

Analogous

#12757F

#1B127F

#123F7F

Triadic

#123F7F

#7F123F

#3F7F12

Split Complementary

#123F7F

#7F1B12

#757F12

Tetradic

#123F7F

#7F1275

#7F5212

#127F1B

Color Blindness Simulation

Original

#123F7F

Protanopia

#252670

Deuteranopia

#23206C

Tritanopia

#146361

Achromatopsia

#3A3A3A

CSS Usage

background-color: #123F7F;
color: #123F7F;
border-color: #123F7F;
Nearest Tailwind: Blue 900 #1E3A8A

Tailwind Shades

50
#F2F7FC
100
#E2EBF9
200
#C0D7F6
300
#94BAF0
400
#5A94E8
500
#206FDF
600
#1959B3
700
#14478F
800
#103770
900
#102B51
950
#0A1B33

Contrast Checker

Text on white

10.28:1

AA Pass AAA Pass

Text on black

2.04:1

AA Fail AAA Fail

Related Articles

Tutorials

Responsive Color: Adapting Colors for Different Screens

Jan 23, 2026
Tutorials

Color for Data Storytelling: Beyond Default Chart Colors

Jan 21, 2026
Tutorials

How to Choose Brand Colors: A Step-by-Step Guide

Jan 18, 2026