Vulcan

#181021

General Information about #181021

#181021, also known as Vulcan, is a deep, dark shade of color that belongs to the family of nearly black hues. In the RGB color model, it is composed of 9.41% red, 6.27% green, and 12.94% blue. Converting it to the CMYK color model, it comprises 27.27% cyan, 51.16% magenta, 0% yellow, and 87.06% black. Its hexadecimal representation, #181021, is frequently used in digital design for backgrounds, text, or accents, although its darkness requires careful consideration of contrast with other elements for optimal readability. Colors similar to Vulcan include shades of charcoal and deep midnight blue. Understanding color models is vital for designers to ensure accurate color representation across various media.

The hex color #181021, also known as Vulcan, presents significant accessibility challenges, primarily due to its very dark nature. When used as a foreground color for text, it requires extremely light background colors to achieve sufficient contrast for readability, adhering to WCAG (Web Content Accessibility Guidelines) standards. A contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text. Therefore, careful consideration must be given to the background color to ensure users, especially those with visual impairments, can easily read the content. It is advisable to use contrast checking tools to verify compliance. Using this color for decorative purposes, where readability isn't critical, is a more appropriate application. Otherwise, pairing with accessible colors or reconsidering its use is crucial for inclusive design.

Shades

Digital Color Formats

RGB
24 16 33
RGB24 16 33
Red
Green
Blue
HSL
268.24deg 34.69% 9.61%
268.2434.699.61HSL
Hue
Saturation
Lightness
HWB
268.24deg 6.27% 87.06%
268.246.2787.06HWB
Hue
Whiteness
Blackness
hex#181021
rgb24 16 33
hsl268.24deg 34.69% 9.61%
cmyk27.27% 51.52% 0% 87.06%
hwb268.24deg 6.27% 87.06%
xyz-d650.01 0.01 0.02
oklch0.1925 0.0353 304.95
oklab0.1925 0.02 -0.03
CMYK
27.27% 51.52% 0% 87.06%
27.2751.52087.06CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.01 0.01 0.02
0.010.010.02XYZ
X
Y
Z
OKLCH
0.1925 0.0353 304.95
0.19250.0353304.95LCH
Lightness
Chroma
Hue
OKLAB
0.1925 0.02 -0.03
0.19250.02-0.03LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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