#1F184C

#1F184C

Color Values

HEX

#1F184C

RGB

31, 24, 76

HSL

248.1, 52.0%, 19.6%

HSV

248.1, 68.4%, 29.8%

CMYK

59.2%, 68.4%, 0.0%, 70.2%

OKLCH

0.2531 0.0921 283.8

Properties

Cool Dark Nearest: RAL 5002 Ultramarine Blue

Color Harmonies

Complementary

#1F184C

#454C18

Analogous

#182B4C

#39184C

#1F184C

Triadic

#1F184C

#4C1F18

#184C1F

Split Complementary

#1F184C

#4C3918

#2B4C18

Tetradic

#1F184C

#4C182B

#454C18

#184C39

Color Blindness Simulation

Original

#1F184C

Protanopia

#1C1C3F

Deuteranopia

#1C1D3C

Tritanopia

#1F3533

Achromatopsia

#1D1D1D

CSS Usage

background-color: #1F184C;
color: #1F184C;
border-color: #1F184C;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F5F4FB
100
#E7E5F5
200
#CEC9EE
300
#ABA2E2
400
#7D70D2
500
#4F3DC2
600
#3F319B
700
#33277C
800
#281F61
900
#201A47
950
#14102D

Contrast Checker

Text on white

16.24:1

AA Pass AAA Pass

Text on black

1.29:1

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