#183B3F

#183B3F

Color Values

HEX

#183B3F

RGB

24, 59, 63

HSL

186.2, 44.8%, 17.1%

HSV

186.2, 61.9%, 24.7%

CMYK

61.9%, 6.3%, 0.0%, 75.3%

OKLCH

0.3283 0.0408 205.3

Properties

Cool Dark Nearest: RAL 6004 Blue Green

Color Harmonies

Complementary

#183B3F

#3F1C18

Analogous

#183F30

#18283F

#183B3F

Triadic

#183B3F

#3F183B

#3B3F18

Split Complementary

#183B3F

#3F1828

#3F3018

Tetradic

#183B3F

#30183F

#3F1C18

#283F18

Color Blindness Simulation

Original

#183B3F

Protanopia

#27273E

Deuteranopia

#25223E

Tritanopia

#1A3D3D

Achromatopsia

#343434

CSS Usage

background-color: #183B3F;
color: #183B3F;
border-color: #183B3F;
Nearest Tailwind: Teal 950 #042F2E

Tailwind Shades

50
#F4FAFA
100
#E6F3F4
200
#CBE8EB
300
#A6D8DD
400
#76C2CB
500
#46ADB9
600
#388A94
700
#2D6F76
800
#23565C
900
#1D4044
950
#12282B

Contrast Checker

Text on white

12.1:1

AA Pass AAA Pass

Text on black

1.74:1

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