Vulcan

#15181F

General Information about #15181F

The hexadecimal color code #15181F represents a dark, desaturated shade of blue-gray, often referred to as 'Vulcan'. In the RGB color model, it consists of 8.24% red, 9.41% green, and 12.16% blue. This color is frequently associated with sophistication, modernity, and a sense of calm. Due to its low luminance, #15181F typically falls into the category of 'dark' colors. It's commonly used in designs where a subtle and understated background is desired. The hex code offers a precise way to specify this particular shade for digital applications, ensuring consistency across different platforms and devices. Its muted tone makes it versatile for various design purposes.

The hex color #15181F, also known as Vulcan, presents significant accessibility challenges. Its low luminance value of approximately 2% makes it difficult to perceive, especially for individuals with visual impairments or color blindness. When used as a foreground color, it requires a very light background color to meet WCAG (Web Content Accessibility Guidelines) contrast ratio requirements. A contrast ratio of at least 4.5:1 is recommended for normal-sized text and 3:1 for large text. Failure to meet these contrast ratios can render content unreadable for many users. It's crucial to test color combinations using accessibility tools to ensure sufficient contrast and readability. Consider alternative, lighter shades or pairing #15181F with a much brighter color to enhance usability and inclusivity.

Shades

Digital Color Formats

RGB
21 24 31
RGB21 24 31
Red
Green
Blue
HSL
222deg 19.23% 10.2%
22219.2310.2HSL
Hue
Saturation
Lightness
HWB
222deg 8.24% 87.84%
2228.2487.84HWB
Hue
Whiteness
Blackness
hex#15181F
rgb21 24 31
hsl222deg 19.23% 10.2%
cmyk32.26% 22.58% 0% 87.84%
hwb222deg 8.24% 87.84%
xyz-d650.01 0.01 0.01
oklch0.2091 0.0147 266.89
oklab0.2091 0 -0.01
CMYK
32.26% 22.58% 0% 87.84%
32.2622.58087.84CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.01 0.01 0.01
0.010.010.01XYZ
X
Y
Z
OKLCH
0.2091 0.0147 266.89
0.20910.0147266.89LCH
Lightness
Chroma
Hue
OKLAB
0.2091 0 -0.01
0.20910-0.01LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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