#181755

#181755

Color Values

HEX

#181755

RGB

24, 23, 85

HSL

241.0, 57.4%, 21.2%

HSV

241.0, 72.9%, 33.3%

CMYK

71.8%, 72.9%, 0.0%, 66.7%

OKLCH

0.2541 0.1086 276.1

Properties

Cool Dark Nearest: RAL 5005 Signal Blue

Color Harmonies

Complementary

#181755

#545517

Analogous

#173555

#371755

#181755

Triadic

#181755

#551817

#175518

Split Complementary

#181755

#553717

#355517

Tetradic

#181755

#551735

#545517

#175537

Color Blindness Simulation

Original

#181755

Protanopia

#181846

Deuteranopia

#181842

Tritanopia

#183A38

Achromatopsia

#1C1C1C

CSS Usage

background-color: #181755;
color: #181755;
border-color: #181755;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F4F4FB
100
#E5E4F6
200
#C7C7F0
300
#A09FE5
400
#6C6AD7
500
#3936C9
600
#2D2BA1
700
#242380
800
#1C1B64
900
#181749
950
#0F0F2E

Contrast Checker

Text on white

16.25:1

AA Pass AAA Pass

Text on black

1.29:1

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