#171B53

#171B53

Color Values

HEX

#171B53

RGB

23, 27, 83

HSL

236.0, 56.6%, 20.8%

HSV

236.0, 72.3%, 32.5%

CMYK

72.3%, 67.5%, 0.0%, 67.5%

OKLCH

0.2591 0.1004 273.9

Properties

Cool Dark Nearest: RAL 5005 Signal Blue

Color Harmonies

Complementary

#171B53

#534F17

Analogous

#173953

#311753

#171B53

Triadic

#171B53

#53171B

#1B5317

Split Complementary

#171B53

#533117

#395317

Tetradic

#171B53

#531739

#534F17

#175331

Color Blindness Simulation

Original

#171B53

Protanopia

#191945

Deuteranopia

#181842

Tritanopia

#173B38

Achromatopsia

#1E1E1E

CSS Usage

background-color: #171B53;
color: #171B53;
border-color: #171B53;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F4F4FB
100
#E5E6F6
200
#C7CAF0
300
#9FA4E4
400
#6B72D6
500
#3741C8
600
#2C34A0
700
#232A80
800
#1C2064
900
#181B49
950
#0F112E

Contrast Checker

Text on white

15.93:1

AA Pass AAA Pass

Text on black

1.32:1

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