#12104F

#12104F

Color Values

HEX

#12104F

RGB

18, 16, 79

HSL

241.9, 66.3%, 18.6%

HSV

241.9, 79.7%, 31.0%

CMYK

77.2%, 79.7%, 0.0%, 69.0%

OKLCH

0.2303 0.1103 274.8

Properties

Cool Dark Nearest: RAL 5005 Signal Blue

Color Harmonies

Complementary

#12104F

#4D4F10

Analogous

#102D4F

#31104F

#12104F

Triadic

#12104F

#4F1210

#104F12

Split Complementary

#12104F

#4F3110

#2D4F10

Tetradic

#12104F

#4F102D

#4D4F10

#104F31

Color Blindness Simulation

Original

#12104F

Protanopia

#111140

Deuteranopia

#11113C

Tritanopia

#123431

Achromatopsia

#151515

CSS Usage

background-color: #12104F;
color: #12104F;
border-color: #12104F;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F3F3FC
100
#E4E3F7
200
#C5C4F3
300
#9C99EA
400
#6662DF
500
#302BD4
600
#2722AA
700
#1F1B88
800
#18156A
900
#15144D
950
#0D0C31

Contrast Checker

Text on white

17.32:1

AA Pass AAA Pass

Text on black

1.21:1

AA Fail AAA Fail

Related Articles

Tutorials

Building a Color Picker Web Component from Scratch

2月 20, 2026
Tutorials

Web Color Performance: Gradients, Shadows, and Filters

2月 19, 2026
Tutorials

Tailwind CSS Colors: Complete Shade System Guide

2月 19, 2026