#121DBA

#121DBA

Color Values

HEX

#121DBA

RGB

18, 29, 186

HSL

236.1, 82.4%, 40.0%

HSV

236.1, 90.3%, 72.9%

CMYK

90.3%, 84.4%, 0.0%, 27.1%

OKLCH

0.3804 0.2308 266.5

Properties

Cool Dark Nearest: darkblue

Color Harmonies

Complementary

#121DBA

#BAAF12

Analogous

#1271BA

#5B12BA

#121DBA

Triadic

#121DBA

#BA121D

#1DBA12

Split Complementary

#121DBA

#BA5B12

#71BA12

Tetradic

#121DBA

#BA1271

#BAAF12

#12BA5B

Color Blindness Simulation

Original

#121DBA

Protanopia

#171794

Deuteranopia

#16158B

Tritanopia

#13766F

Achromatopsia

#262626

CSS Usage

background-color: #121DBA;
color: #121DBA;
border-color: #121DBA;
Nearest Tailwind: Indigo 700 #4338CA

Tailwind Shades

50
#F2F3FD
100
#E1E2FA
200
#BEC2F9
300
#8F96F4
400
#535DEE
500
#1624E9
600
#121DBA
700
#0E1795
800
#0B1274
900
#0D1154
950
#080B35

Contrast Checker

Text on white

10.99:1

AA Pass AAA Pass

Text on black

1.91:1

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