Vulcan

#101520

General Information about #101520

The hex color #101520, often referred to as 'Vulcan,' is a very dark shade of gray-blue, bordering on black. It belongs to the family of neutral colors and is characterized by low saturation and luminance. Its hexadecimal representation signifies a specific mixture of red, green, and blue light values, with each component contributing to the overall dark and muted appearance. Colors like #101520 are often used to convey a sense of sophistication, mystery, or formality. In terms of color theory, such a dark shade can serve as an excellent background or base color, allowing brighter and more vibrant colors to stand out effectively. However, it is crucial to consider accessibility when using such a dark color.

The hex color #101520, also known as Vulcan, presents significant accessibility challenges due to its very dark nature. Its low luminance results in extremely poor contrast against light backgrounds, making it difficult for users with visual impairments to perceive text or graphical elements. According to WCAG guidelines, it would fail most contrast ratio tests against standard white or light-colored backgrounds. To improve accessibility, it is crucial to pair this color with very light shades, such as white (#FFFFFF) or very pale grays, to ensure sufficient contrast (ideally a contrast ratio of at least 4.5:1 for normal text and 3:1 for large text). Avoid using this color for essential interactive elements without careful consideration of contrast to prevent usability issues for a large segment of users. Using it as a background with white text can work, but thorough testing is recommended.

Shades

Digital Color Formats

RGB
16 21 32
RGB16 21 32
Red
Green
Blue
HSL
221.25deg 33.33% 9.41%
221.2533.339.41HSL
Hue
Saturation
Lightness
HWB
221.25deg 6.27% 87.45%
221.256.2787.45HWB
Hue
Whiteness
Blackness
hex#101520
rgb16 21 32
hsl221.25deg 33.33% 9.41%
cmyk50% 34.37% 0% 87.45%
hwb221.25deg 6.27% 87.45%
xyz-d650.01 0.01 0.01
oklch0.1962 0.0237 265.42
oklab0.1962 0 -0.02
CMYK
50% 34.37% 0% 87.45%
5034.37087.45CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.01 0.01 0.01
0.010.010.01XYZ
X
Y
Z
OKLCH
0.1962 0.0237 265.42
0.19620.0237265.42LCH
Lightness
Chroma
Hue
OKLAB
0.1962 0 -0.02
0.19620-0.02LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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