#12153F

#12153F

Color Values

HEX

#12153F

RGB

18, 21, 63

HSL

236.0, 55.6%, 15.9%

HSV

236.0, 71.4%, 24.7%

CMYK

71.4%, 66.7%, 0.0%, 75.3%

OKLCH

0.2229 0.0789 274.9

Properties

Cool Dark Nearest: RAL 5002 Ultramarine Blue

Color Harmonies

Complementary

#12153F

#3F3C12

Analogous

#122C3F

#26123F

#12153F

Triadic

#12153F

#3F1215

#153F12

Split Complementary

#12153F

#3F2612

#2C3F12

Tetradic

#12153F

#3F122C

#3F3C12

#123F26

Color Blindness Simulation

Original

#12153F

Protanopia

#131335

Deuteranopia

#131332

Tritanopia

#122D2B

Achromatopsia

#171717

CSS Usage

background-color: #12153F;
color: #12153F;
border-color: #12153F;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F4F4FB
100
#E5E6F6
200
#C7CAEF
300
#A0A4E4
400
#6C73D5
500
#3942C6
600
#2D359F
700
#242A7F
800
#1C2163
900
#181B49
950
#0F112E

Contrast Checker

Text on white

17.43:1

AA Pass AAA Pass

Text on black

1.2:1

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