Blue Charcoal

#031218

General Information about Blue Charcoal

The hex color #031218, also known as Blue Charcoal, is a very dark shade of cyan-blue. In the RGB color model, it is composed of 1.18% red, 7.06% green, and 9.41% blue. Its primary characteristic is its extremely low luminance, making it appear almost black. This color is often associated with sophistication, depth, and calmness. It is more common in design fields that prefer dark or muted aesthetics. Blue Charcoal is not a particularly vibrant color, but it possesses a subtle complexity due to its underlying blue tones. It may be perceived as cool or neutral, depending on the surrounding colors and context. It is often seen in modern and minimalist designs where a sense of understated elegance is desired.

The hex color #031218, also known as Blue Charcoal, presents significant accessibility challenges due to its extremely low luminance. Its contrast ratio against a standard white background is very poor, making it difficult for individuals with visual impairments, including those with low vision or color blindness, to distinguish text or graphical elements rendered in this color. Web Content Accessibility Guidelines (WCAG) require sufficient contrast ratios to ensure readability and usability. Therefore, using #031218 for text or important interface elements is strongly discouraged without careful consideration of contrast. To improve accessibility, it is crucial to pair #031218 with very light colors to achieve an acceptable contrast ratio, or to avoid using it for critical content altogether. Tools such as contrast checkers can assist in determining appropriate color pairings to meet accessibility standards.

Shades

Digital Color Formats

RGB
3 18 24
RGB3 18 24
Red
Green
Blue
HSL
197.14deg 77.78% 5.29%
197.1477.785.29HSL
Hue
Saturation
Lightness
HWB
197.14deg 1.18% 90.59%
197.141.1890.59HWB
Hue
Whiteness
Blackness
hex#031218
rgb3 18 24
hsl197.14deg 77.78% 5.29%
cmyk87.5% 25% 0% 90.59%
hwb197.14deg 1.18% 90.59%
xyz-d650 0.01 0.01
oklch0.1712 0.0259 224.23
oklab0.1712 -0.02 -0.02
CMYK
87.5% 25% 0% 90.59%
87.525090.59CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0 0.01 0.01
00.010.01XYZ
X
Y
Z
OKLCH
0.1712 0.0259 224.23
0.17120.0259224.23LCH
Lightness
Chroma
Hue
OKLAB
0.1712 -0.02 -0.02
0.1712-0.02-0.02LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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