#12128F

#12128F

Color Values

HEX

#12128F

RGB

18, 18, 143

HSL

240.0, 77.6%, 31.6%

HSV

240.0, 87.4%, 56.1%

CMYK

87.4%, 87.4%, 0.0%, 43.9%

OKLCH

0.3141 0.1898 268.3

Properties

Cool Dark Nearest: navy

Color Harmonies

Complementary

#12128F

#8F8F12

Analogous

#12518F

#51128F

#12128F

Triadic

#12128F

#8F1212

#128F12

Split Complementary

#12128F

#8F5112

#518F12

Tetradic

#12128F

#8F1251

#8F8F12

#128F51

Color Blindness Simulation

Original

#12128F

Protanopia

#121271

Deuteranopia

#12126A

Tritanopia

#125954

Achromatopsia

#1B1B1B

CSS Usage

background-color: #12128F;
color: #12128F;
border-color: #12128F;
Nearest Tailwind: Violet 900 #4C1D95

Tailwind Shades

50
#F2F2FC
100
#E1E1F9
200
#C0C0F7
300
#9292F1
400
#5757EA
500
#1D1DE2
600
#1717B5
700
#121291
800
#0E0E71
900
#0F0F52
950
#090934

Contrast Checker

Text on white

13.92:1

AA Pass AAA Pass

Text on black

1.51:1

AA Fail 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