#12283B

#12283B

Color Values

HEX

#12283B

RGB

18, 40, 59

HSL

207.8, 53.2%, 15.1%

HSV

207.8, 69.5%, 23.1%

CMYK

69.5%, 32.2%, 0.0%, 76.9%

OKLCH

0.2688 0.0454 246.6

Properties

Cool Dark Nearest: RAL 5020 Ocean Blue

Color Harmonies

Complementary

#12283B

#3B2512

Analogous

#123B39

#12143B

#12283B

Triadic

#12283B

#3B1228

#283B12

Split Complementary

#12283B

#3B1214

#3B3912

Tetradic

#12283B

#39123B

#3B2512

#143B12

Color Blindness Simulation

Original

#12283B

Protanopia

#1C1C36

Deuteranopia

#1A1935

Tritanopia

#133332

Achromatopsia

#252525

CSS Usage

background-color: #12283B;
color: #12283B;
border-color: #12283B;
Nearest Tailwind: Slate 800 #1E293B

Tailwind Shades

50
#F4F8FB
100
#E5EEF5
200
#C8DDEE
300
#A1C4E2
400
#6EA4D3
500
#3C84C3
600
#306A9C
700
#26557D
800
#1E4262
900
#193248
950
#10202D

Contrast Checker

Text on white

15.08:1

AA Pass AAA Pass

Text on black

1.39:1

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