Vulcan

#18171D

General Information about #18171D

The hexadecimal color code #18171D, often referred to as 'Vulcan', represents a very dark shade of grayish-blue. It falls into the category of near-black colors, possessing low saturation and luminance. In the RGB color model, it is composed of 9.41% red, 8.63% green, and 11.37% blue. This subtle blend creates a muted, sophisticated tone often associated with elegance and subtlety. Because of its nature as a near-black color, it can be used in various design contexts where a strong, grounding color is needed without the starkness of pure black. However, it's crucial to consider the color's accessibility, given its low luminance, and ensure adequate contrast with other elements in a design.

The hex color #18171D, also known as Vulcan, presents significant accessibility challenges, primarily due to its very low luminance. Its dark nature means that it provides insufficient contrast against similarly dark backgrounds, making text and interface elements difficult to read for users with visual impairments. According to WCAG guidelines, it is crucial to ensure a contrast ratio of at least 4.5:1 for standard text and 3:1 for large text against its background. Vulcan would likely fail these criteria against many common background colors. Designers must be extremely cautious when using this color and should always test it with accessibility evaluation tools to verify compliance. Consider pairing it with much lighter colors to ensure readability and usability for all users. Using it for purely decorative elements that do not convey essential information can be acceptable, but even then, its impact on users with sensitivities should be considered.

Shades

Digital Color Formats

RGB
24 23 29
RGB24 23 29
Red
Green
Blue
HSL
250deg 11.54% 10.2%
25011.5410.2HSL
Hue
Saturation
Lightness
HWB
250deg 9.02% 88.63%
2509.0288.63HWB
Hue
Whiteness
Blackness
hex#18171D
rgb24 23 29
hsl250deg 11.54% 10.2%
cmyk17.24% 20.69% 0% 88.63%
hwb250deg 9.02% 88.63%
xyz-d650.01 0.01 0.01
oklch0.2085 0.0119 292.95
oklab0.2085 0 -0.01
CMYK
17.24% 20.69% 0% 88.63%
17.2420.69088.63CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.01 0.01 0.01
0.010.010.01XYZ
X
Y
Z
OKLCH
0.2085 0.0119 292.95
0.20850.0119292.95LCH
Lightness
Chroma
Hue
OKLAB
0.2085 0 -0.01
0.20850-0.01LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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