#373963

#373963

Color Values

HEX

#373963

RGB

55, 57, 99

HSL

237.3, 28.6%, 30.2%

HSV

237.3, 44.4%, 38.8%

CMYK

44.4%, 42.4%, 0.0%, 61.2%

OKLCH

0.3636 0.0719 280.1

Properties

Cool Dark Nearest: RAL 5022 Night Blue

Color Harmonies

Complementary

#373963

#636137

Analogous

#374F63

#4B3763

#373963

Triadic

#373963

#633739

#396337

Split Complementary

#373963

#634B37

#4F6337

Tetradic

#373963

#63374F

#636137

#37634B

Color Blindness Simulation

Original

#373963

Protanopia

#383859

Deuteranopia

#383856

Tritanopia

#37514F

Achromatopsia

#3C3C3C

CSS Usage

background-color: #373963;
color: #373963;
border-color: #373963;
Nearest Tailwind: Blue 950 #172554

Tailwind Shades

50
#F5F6F9
100
#E9E9F1
200
#D1D2E6
300
#B0B2D3
400
#8688BC
500
#5B5EA4
600
#494B83
700
#3A3C69
800
#2E2F52
900
#24253D
950
#171726

Contrast Checker

Text on white

10.89:1

AA Pass AAA Pass

Text on black

1.93:1

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