#183777

#183777

Color Values

HEX

#183777

RGB

24, 55, 119

HSL

220.4, 66.4%, 28.0%

HSV

220.4, 79.8%, 46.7%

CMYK

79.8%, 53.8%, 0.0%, 53.3%

OKLCH

0.3539 0.1159 262.6

Properties

Cool Dark Nearest: NCS S 3060-B Dark Blue

Color Harmonies

Complementary

#183777

#775818

Analogous

#186677

#281877

#183777

Triadic

#183777

#771837

#377718

Split Complementary

#183777

#772818

#667718

Tetradic

#183777

#771866

#775818

#187728

Color Blindness Simulation

Original

#183777

Protanopia

#252668

Deuteranopia

#242164

Tritanopia

#1A5B59

Achromatopsia

#353535

CSS Usage

background-color: #183777;
color: #183777;
border-color: #183777;
Nearest Tailwind: Blue 900 #1E3A8A

Tailwind Shades

50
#F3F6FC
100
#E3EAF7
200
#C4D3F3
300
#99B4EA
400
#628BDF
500
#2B62D4
600
#224FAA
700
#1B3F88
800
#15316A
900
#13264D
950
#0C1831

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