#1C173D

#1C173D

Color Values

HEX

#1C173D

RGB

28, 23, 61

HSL

247.9, 45.2%, 16.5%

HSV

247.9, 62.3%, 23.9%

CMYK

54.1%, 62.3%, 0.0%, 76.1%

OKLCH

0.2346 0.0702 285.6

Properties

Cool Dark Nearest: RAL 5002 Ultramarine Blue

Color Harmonies

Complementary

#1C173D

#383D17

Analogous

#17253D

#2F173D

#1C173D

Triadic

#1C173D

#3D1C17

#173D1C

Split Complementary

#1C173D

#3D2F17

#253D17

Tetradic

#1C173D

#3D1725

#383D17

#173D2F

Color Blindness Simulation

Original

#1C173D

Protanopia

#1A1A34

Deuteranopia

#1A1A32

Tritanopia

#1C2D2B

Achromatopsia

#1B1B1B

CSS Usage

background-color: #1C173D;
color: #1C173D;
border-color: #1C173D;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F5F4FA
100
#E8E6F4
200
#CFCBEB
300
#ADA6DD
400
#8176CB
500
#5546B9
600
#443894
700
#362D76
800
#2B235D
900
#221D44
950
#15122B

Contrast Checker

Text on white

16.94:1

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