Blue Charcoal

#000A0F

General Information about Blue Charcoal

The hexadecimal color code #000A0F represents a very dark shade of blue, often referred to as "Blue Charcoal." It is composed of 0% red, 3.92% green, and 5.88% blue. In the RGB color model, this translates to (0, 10, 15). The CMYK representation is 100% cyan, 33% magenta, 0% yellow, and 94% black. This color is predominantly used to create a sense of depth, mystery, or sophistication. Its near-black appearance means it has a very low luminance value, making it suitable for backgrounds or accents when high contrast is desired. Due to its dark nature, care must be taken when using it with text to ensure readability and accessibility guidelines are met. It evokes feelings of calmness and stability, and can be seen in corporate branding or designs aiming for a serious, professional feel.

The color #000A0F, also known as Blue Charcoal, presents significant accessibility challenges, especially in text-based contexts. Its extremely low luminance value of approximately 0.001 makes it nearly invisible against standard black backgrounds and provides insufficient contrast against most dark grays. According to WCAG guidelines, a contrast ratio of at least 4.5:1 is required for normal-sized text and 3:1 for large text to ensure readability for individuals with moderate visual impairments. Blue Charcoal fails to meet these criteria when paired with almost any color, necessitating careful consideration for its use. To improve accessibility, it should be paired with very light colors or used sparingly in non-textual elements like decorative borders or background accents, always ensuring sufficient contrast with surrounding elements. Moreover, providing alternative high-contrast themes or allowing users to customize color schemes can mitigate accessibility issues associated with this dark hue.

Shades

Digital Color Formats

RGB
0 10 15
RGB0 10 15
Red
Green
Blue
HSL
200 100% 2.94%
2001002.94HSL
Hue
Saturation
Lightness
HWB
200 0% 94.12%
200094.12HWB
Hue
Whiteness
Blackness
hex#000A0F
rgb0 10 15
hsl200 100% 2.94%
cmyk100% 33.33% 0% 94.12%
hwb200 0% 94.12%
xyz-d650 0 0
oklch0.1341 0.0247 221.53
oklab0.1341 -0.02 -0.02
CMYK
100% 33.33% 0% 94.12%
10033.33094.12CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0 0 0
000XYZ
X
Y
Z
OKLCH
0.1341 0.0247 221.53
0.13410.0247221.53LCH
Lightness
Chroma
Hue
OKLAB
0.1341 -0.02 -0.02
0.1341-0.02-0.02LAB
Lightness
Green–Red
Blue–Yellow

Alternative colors

Applications

Complementary color

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