Blue Charcoal

#000A11

General Information about Blue Charcoal

The hex color #000A11, also known as Blue Charcoal, is a very dark shade of cyan-blue. It is composed of 0 red, 10 green, and 17 blue values. In the RGB color model, this translates to 0% red, 3.92% green, and 6.67% blue. Its low RGB values contribute to its inherent darkness. The color is often associated with sophistication, depth, and a sense of mystery. It is not a commonly used color in its pure form due to its darkness, but it can be effective when used strategically as an accent or background color. Blue Charcoal can evoke feelings of tranquility and introspection, making it suitable for designs that aim to create a calm or serious mood. In the HSV color space, it has a hue of 205 degrees, a saturation of 100%, and a value of 7%.

The hex color #000a11, also known as Blue Charcoal, presents significant accessibility challenges primarily due to its low luminance. Its dark nature results in a very low contrast ratio when paired with standard text colors like white or light grays. According to WCAG guidelines, a contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text to ensure readability for users with moderate visual impairments. Using #000a11 as a background or text color without careful consideration of contrast can exclude a substantial portion of users, especially those with low vision or color blindness. To improve accessibility, consider pairing it with much lighter colors, testing the contrast ratio using online tools, and providing alternative high-contrast themes. Also, avoid using it for essential information elements where readability is critical.

Shades

Digital Color Formats

RGB
0 10 17
RGB0 10 17
Red
Green
Blue
HSL
204.71deg 100% 3.33%
204.711003.33HSL
Hue
Saturation
Lightness
HWB
204.71deg 0% 93.33%
204.71093.33HWB
Hue
Whiteness
Blackness
hex#000A11
rgb0 10 17
hsl204.71deg 100% 3.33%
cmyk100% 41.18% 0% 93.33%
hwb204.71deg 0% 93.33%
xyz-d650 0 0.01
oklch0.1355 0.027 229.84
oklab0.1355 -0.02 -0.02
CMYK
100% 41.18% 0% 93.33%
10041.18093.33CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0 0 0.01
000.01XYZ
X
Y
Z
OKLCH
0.1355 0.027 229.84
0.13550.027229.84LCH
Lightness
Chroma
Hue
OKLAB
0.1355 -0.02 -0.02
0.1355-0.02-0.02LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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