Blue Charcoal

#040C17

General Information about Blue Charcoal

Blue Charcoal, represented by the hex code #040C17, is a very dark shade of blue, almost appearing black. It belongs to the family of cool colors and evokes feelings of calm, sophistication, and mystery. Due to its low lightness value, it is often used in designs where a subtle, understated presence is desired. It is crucial to use this color carefully, especially in digital environments, due to its potential accessibility issues related to contrast. When combined with lighter colors, Blue Charcoal can create visually appealing compositions. It can be used effectively in branding, web design, and interior decoration to achieve a modern and elegant aesthetic. In print media, it can be used to produce high-end designs where a subtle background is needed, particularly when used with metallic elements.

The hex color #040C17, also known as Blue Charcoal, presents significant accessibility challenges due to its extremely low luminance. Its contrast ratio against white is very poor, making text and interface elements rendered in this color difficult to read for users with visual impairments, including those with low vision or color blindness. Web Content Accessibility Guidelines (WCAG) require a contrast ratio of at least 4.5:1 for normal text and 3:1 for large text against its background. #040C17 falls far short of these recommendations. To improve accessibility, it is essential to pair this color with much lighter hues or to use it sparingly for purely decorative elements where readability is not critical. Implementing text shadows or borders can sometimes mitigate the contrast issue, but careful consideration is needed to ensure the design remains usable and inclusive for all users.

Shades

Digital Color Formats

RGB
4 12 23
RGB4 12 23
Red
Green
Blue
HSL
214.74deg 70.37% 5.29%
214.7470.375.29HSL
Hue
Saturation
Lightness
HWB
214.74deg 1.57% 90.98%
214.741.5790.98HWB
Hue
Whiteness
Blackness
hex#040C17
rgb4 12 23
hsl214.74deg 70.37% 5.29%
cmyk82.61% 47.83% 0% 90.98%
hwb214.74deg 1.57% 90.98%
xyz-d650 0 0.01
oklch0.1518 0.0279 252.96
oklab0.1518 -0.01 -0.03
CMYK
82.61% 47.83% 0% 90.98%
82.6147.83090.98CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0 0 0.01
000.01XYZ
X
Y
Z
OKLCH
0.1518 0.0279 252.96
0.15180.0279252.96LCH
Lightness
Chroma
Hue
OKLAB
0.1518 -0.01 -0.03
0.1518-0.01-0.03LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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