Vulcan

#15191E

General Information

The hexadecimal color #15191E, often referred to as Vulcan, is a very dark shade that falls within the realm of cool, muted tones. It is composed of 8.24% red, 9.8% green, and 11.76% blue. In the RGB color space, it is very close to black. In the HSV (hue, saturation, value) model, it has a hue angle of 210 degrees, a saturation of 30%, and a value of 12%. The color is commonly used in digital design and graphic applications where a dark, understated background or element is desired. Its subtle nature allows for brighter, more vibrant colors to stand out when placed against it. Due to its low luminosity, it is important to consider accessibility guidelines when using this color, particularly regarding contrast ratios for text and interactive elements.

The hex color #15191E, also known as Vulcan, presents some accessibility challenges due to its dark nature. When used as a background color, it's crucial to ensure that the text layered on top has sufficient contrast to meet WCAG (Web Content Accessibility Guidelines) standards. A contrast ratio of at least 4.5:1 for normal text and 3:1 for large text is recommended for Level AA compliance. For Level AAA, these ratios increase to 7:1 and 4.5:1, respectively. Using lighter shades of gray, beige, or even muted pastel colors for text can significantly improve readability. Avoid using dark or similarly toned colors for text or interactive elements, as this will make it difficult for users, especially those with visual impairments, to perceive the content. Testing with accessibility tools and gathering user feedback are essential to ensure that your color choices do not create barriers for users.

Shades

Digital Color Formats

RGB
21 25 30
RGB21 25 30
Red
Green
Blue
HSL
213.33deg 17.65% 10%
213.3317.6510HSL
Hue
Saturation
Lightness
HWB
213.33deg 8.24% 88.24%
213.338.2488.24HWB
Hue
Whiteness
Blackness
hex#15191E
rgb21 25 30
hsl213.33deg 17.65% 10%
cmyk30% 16.67% 0% 88.24%
hwb213.33deg 8.24% 88.24%
xyz-d650.01 0.01 0.01
oklch0.2115 0.0117 254.13
oklab0.2115 0 -0.01
CMYK
30% 16.67% 0% 88.24%
3016.67088.24CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.01 0.01 0.01
0.010.010.01XYZ
X
Y
Z
OKLCH
0.2115 0.0117 254.13
0.21150.0117254.13LCH
Lightness
Chroma
Hue
OKLAB
0.2115 0 -0.01
0.21150-0.01LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

Buttons