#1D173D

#1D173D

Color Values

HEX

#1D173D

RGB

29, 23, 61

HSL

249.5, 45.2%, 16.5%

HSV

249.5, 62.3%, 23.9%

CMYK

52.5%, 62.3%, 0.0%, 76.1%

OKLCH

0.2357 0.0701 287.0

Properties

Cool Dark Nearest: RAL 5002 Ultramarine Blue

Color Harmonies

Complementary

#1D173D

#373D17

Analogous

#17243D

#30173D

#1D173D

Triadic

#1D173D

#3D1D17

#173D1D

Split Complementary

#1D173D

#3D3017

#243D17

Tetradic

#1D173D

#3D1724

#373D17

#173D30

Color Blindness Simulation

Original

#1D173D

Protanopia

#1A1A34

Deuteranopia

#1B1B32

Tritanopia

#1D2D2B

Achromatopsia

#1B1B1B

CSS Usage

background-color: #1D173D;
color: #1D173D;
border-color: #1D173D;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F5F4FA
100
#E8E6F4
200
#D0CBEB
300
#AFA6DD
400
#8476CB
500
#5846B9
600
#463894
700
#382D76
800
#2C235D
900
#231D44
950
#16122B

Contrast Checker

Text on white

16.91:1

AA Pass AAA Pass

Text on black

1.24:1

AA Fail AAA Fail

Related Articles

Tutorials

CSS color-mix(): Blend Colors Natively in the Browser

Jan 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

Jan 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

Jan 15, 2026