#181F8B

#181F8B

Color Values

HEX

#181F8B

RGB

24, 31, 139

HSL

236.3, 70.6%, 32.0%

HSV

236.3, 82.7%, 54.5%

CMYK

82.7%, 77.7%, 0.0%, 45.5%

OKLCH

0.3279 0.1727 269.5

Properties

Cool Dark Nearest: midnightblue

Color Harmonies

Complementary

#181F8B

#8B8418

Analogous

#18598B

#4A188B

#181F8B

Triadic

#181F8B

#8B181F

#1F8B18

Split Complementary

#181F8B

#8B4A18

#598B18

Tetradic

#181F8B

#8B1859

#8B8418

#188B4A

Color Blindness Simulation

Original

#181F8B

Protanopia

#1B1B71

Deuteranopia

#1B1A6B

Tritanopia

#185C58

Achromatopsia

#252525

CSS Usage

background-color: #181F8B;
color: #181F8B;
border-color: #181F8B;
Nearest Tailwind: Indigo 800 #3730A3

Tailwind Shades

50
#F3F3FC
100
#E2E4F8
200
#C2C5F5
300
#979CED
400
#5E66E3
500
#2531DA
600
#1E27AE
700
#181F8B
800
#13186D
900
#12154F
950
#0B0E32

Contrast Checker

Text on white

13.06:1

AA Pass AAA Pass

Text on black

1.61:1

AA Fail AAA Fail

Related Articles

Color Questions

What Is Pantone? The Universal Color Language

Feb 20, 2026
Color Questions

What Is Metamerism? Why Colors Look Different Under Different Lights

Feb 20, 2026
Color Questions

What Is Luminance? Brightness in Color Science

Feb 20, 2026