Blue Charcoal

#010A19

General Information about #010A19

The hexadecimal color code #010A19 represents a very dark shade of blue, often referred to as Blue Charcoal. It is composed of 0.4% red, 3.9% green, and 9.8% blue. In the RGB color model, this equates to (1, 10, 25). Its perceived darkness stems from its low luminance value. Colors like this are used to evoke feelings of seriousness, sophistication, and calm. In color theory, Blue Charcoal works well when paired with lighter, contrasting colors to create visual interest and balance. It belongs to the cool color family because it's more blue than red or yellow. Its hex triplet is 010A19.

The color #010A19, often referred to as Blue Charcoal, presents significant accessibility challenges due to its extremely low luminance. With such a dark shade, ensuring sufficient contrast with foreground text or interactive elements is critical. Web developers must adhere strictly to WCAG (Web Content Accessibility Guidelines) contrast ratio requirements, typically aiming for a minimum of 4.5:1 for normal text and 3:1 for large text. Using this color as a background necessitates very light text colors to maintain readability. It's advisable to use contrast checking tools to validate the chosen color pairings. Furthermore, consider providing alternative high-contrast themes or allowing users to adjust color settings to accommodate individuals with visual impairments. Over-reliance on such dark colors can inadvertently exclude users and diminish overall usability.

Shades

Digital Color Formats

RGB
1 10 25
RGB1 10 25
Red
Green
Blue
HSL
217.5deg 92.31% 5.1%
217.592.315.1HSL
Hue
Saturation
Lightness
HWB
217.5deg 0.39% 90.2%
217.50.3990.2HWB
Hue
Whiteness
Blackness
hex#010A19
rgb1 10 25
hsl217.5deg 92.31% 5.1%
cmyk96% 60% 0% 90.2%
hwb217.5deg 0.39% 90.2%
xyz-d650 0 0.01
oklch0.1435 0.0381 252.59
oklab0.1435 -0.01 -0.04
CMYK
96% 60% 0% 90.2%
9660090.2CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0 0 0.01
000.01XYZ
X
Y
Z
OKLCH
0.1435 0.0381 252.59
0.14350.0381252.59LCH
Lightness
Chroma
Hue
OKLAB
0.1435 -0.01 -0.04
0.1435-0.01-0.04LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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