Blue Charcoal

#051117

About Blue Charcoal (#051117)

The hexadecimal color code #051117, often referred to as Blue Charcoal, represents a very dark shade of cyan-blue. In the RGB color model, it is composed of 2.0% red, 6.7% green, and 9.0% blue. This color falls within a low range of luminance, contributing to its dark appearance. Colors similar to #051117 evoke feelings of tranquility, sophistication, and depth. Due to its dark nature, this color is often used sparingly in design and requires careful consideration of contrast ratios when paired with other colors, especially for text or interactive elements. It can be effectively employed to create a sense of mystery, formality, or understated elegance. In terms of spectral data, it sits towards the blue end of the spectrum, though its darkness mutes the vibrancy typically associated with blues.

The color #051117, also known as Blue Charcoal, presents significant accessibility challenges due to its extremely dark nature. Its low luminance results in very poor contrast against typical light backgrounds, making it difficult for users with visual impairments to discern text or interface elements. According to WCAG guidelines, it would fail most contrast ratio tests, particularly for small text and icons. To improve accessibility, it is imperative to pair this color with much lighter foreground colors. Consider using a contrast checker to ensure compliance with accessibility standards like WCAG 2.1 AA or AAA. Avoid using this color for critical interactive elements without careful consideration of contrast. Also, avoid using this color for large blocks of text. Providing sufficient contrast not only benefits users with disabilities but also enhances the overall user experience for everyone, including those viewing the content in bright sunlight or on low-quality screens. Alternative color combinations should be explored to ensure inclusivity and usability.

Shades

Digital Color Formats

RGB
5 17 23
RGB5 17 23
Red
Green
Blue
HSL
200 64.29% 5.49%
20064.295.49HSL
Hue
Saturation
Lightness
HWB
200 1.96% 90.98%
2001.9690.98HWB
Hue
Whiteness
Blackness
hex#051117
rgb5 17 23
hsl200 64.29% 5.49%
cmyk78.26% 26.09% 0% 90.98%
hwb200 1.96% 90.98%
xyz-d650 0 0.01
oklch0.1691 0.0223 229.91
oklab0.1691 -0.01 -0.02
CMYK
78.26% 26.09% 0% 90.98%
78.2626.09090.98CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0 0 0.01
000.01XYZ
X
Y
Z
OKLCH
0.1691 0.0223 229.91
0.16910.0223229.91LCH
Lightness
Chroma
Hue
OKLAB
0.1691 -0.01 -0.02
0.1691-0.01-0.02LAB
Lightness
Green–Red
Blue–Yellow

Alternative colors

Applications

Complementary color

Buttons