#1F184D

#1F184D

Color Values

HEX

#1F184D

RGB

31, 24, 77

HSL

247.9, 52.5%, 19.8%

HSV

247.9, 68.8%, 30.2%

CMYK

59.7%, 68.8%, 0.0%, 69.8%

OKLCH

0.2541 0.0936 283.5

Properties

Cool Dark Nearest: RAL 5002 Ultramarine Blue

Color Harmonies

Complementary

#1F184D

#464D18

Analogous

#182C4D

#39184D

#1F184D

Triadic

#1F184D

#4D1F18

#184D1F

Split Complementary

#1F184D

#4D3918

#2C4D18

Tetradic

#1F184D

#4D182C

#464D18

#184D39

Color Blindness Simulation

Original

#1F184D

Protanopia

#1C1C40

Deuteranopia

#1C1D3D

Tritanopia

#1F3634

Achromatopsia

#1D1D1D

CSS Usage

background-color: #1F184D;
color: #1F184D;
border-color: #1F184D;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F5F4FB
100
#E7E5F5
200
#CDC9EE
300
#AAA2E2
400
#7C6FD2
500
#4E3DC2
600
#3F309C
700
#32277C
800
#271E61
900
#201A47
950
#14102D

Contrast Checker

Text on white

16.2:1

AA Pass AAA Pass

Text on black

1.3:1

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