#183B65

#183B65

Color Values

HEX

#183B65

RGB

24, 59, 101

HSL

212.7, 61.6%, 24.5%

HSV

212.7, 76.2%, 39.6%

CMYK

76.2%, 41.6%, 0.0%, 60.4%

OKLCH

0.35 0.0839 254.6

Properties

Cool Dark Nearest: Midnight Blue

Color Harmonies

Complementary

#183B65

#654218

Analogous

#186165

#1B1865

#183B65

Triadic

#183B65

#65183B

#3B6518

Split Complementary

#183B65

#651B18

#616518

Tetradic

#183B65

#651861

#654218

#18651B

Color Blindness Simulation

Original

#183B65

Protanopia

#27275B

Deuteranopia

#252258

Tritanopia

#1A5351

Achromatopsia

#373737

CSS Usage

background-color: #183B65;
color: #183B65;
border-color: #183B65;
Nearest Tailwind: Sky 900 #0C4A6E

Tailwind Shades

50
#F3F7FB
100
#E4ECF6
200
#C5D9F1
300
#9CBEE7
400
#679BDB
500
#3178CE
600
#2760A5
700
#1F4D84
800
#183C67
900
#162E4B
950
#0E1D30

Contrast Checker

Text on white

11.34:1

AA Pass AAA Pass

Text on black

1.85:1

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