Blue Charcoal

#030918

General Information about Blue Charcoal (#030918)

The color #030918, commonly known as Blue Charcoal, is a very dark shade of blue with a subtle hint of gray. In the RGB color model, it consists of 1.18% red, 3.53% green, and 9.41% blue. This composition places it firmly within the blue color family, although its low overall brightness gives it a muted, almost charcoal-like appearance. In the CMYK color model, used primarily for printing, #030918 is composed of 87% cyan, 63% magenta, 0% yellow, and 91% black. This indicates that it requires a significant amount of cyan and magenta to achieve its specific hue. The hex code #030918 is widely used in web design and other digital applications to represent this precise color. Its very low lightness makes it suitable for backgrounds or accents where a dark, understated tone is desired.

The hex color #030918, also known as Blue Charcoal, presents significant accessibility challenges, particularly in text-based contexts. Its extremely low luminance value (very close to black) results in poor contrast against typical light-colored backgrounds. According to WCAG guidelines, sufficient contrast is essential for readability, especially for users with visual impairments. To ensure accessibility, it is crucial to pair this color with very light hues, carefully calculating the contrast ratio to meet minimum thresholds (4.5:1 for normal text and 3:1 for large text). Alternative strategies include using #030918 sparingly, reserving it for decorative elements rather than critical information, or implementing a robust contrast checker to validate color combinations. Moreover, providing alternative color schemes for users with specific visual needs can greatly enhance the user experience and inclusivity of a design.

Shades

Digital Color Formats

RGB
3 9 24
RGB3 9 24
Red
Green
Blue
HSL
222.86deg 77.78% 5.29%
222.8677.785.29HSL
Hue
Saturation
Lightness
HWB
222.86deg 1.18% 90.59%
222.861.1890.59HWB
Hue
Whiteness
Blackness
hex#030918
rgb3 9 24
hsl222.86deg 77.78% 5.29%
cmyk87.5% 62.5% 0% 90.59%
hwb222.86deg 1.18% 90.59%
xyz-d650 0 0.01
oklch0.1419 0.0354 261.03
oklab0.1419 -0.01 -0.04
CMYK
87.5% 62.5% 0% 90.59%
87.562.5090.59CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0 0 0.01
000.01XYZ
X
Y
Z
OKLCH
0.1419 0.0354 261.03
0.14190.0354261.03LCH
Lightness
Chroma
Hue
OKLAB
0.1419 -0.01 -0.04
0.1419-0.01-0.04LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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