Blue Charcoal

#030817

General Information about #030817

The hex color #030817, often referred to as Blue Charcoal, is a deep, dark shade of blue that evokes feelings of calmness, mystery, and sophistication. It resides within the cyan-blue hue family, but its low luminance value results in a near-black appearance. In the RGB (Red, Green, Blue) color model, it is composed of 1.2% red, 3.14% green, and 8.63% blue. This color is frequently used in design contexts where a subtle, understated elegance is desired. The hexadecimal color system is a base-16 numbering system used in HTML, CSS, and other web technologies to represent colors. Each hex color code consists of a '#' symbol followed by six hexadecimal digits (0-9 and A-F), with each pair of digits representing the intensity of red, green, and blue respectively.

The hex color #030817, also known as Blue Charcoal, presents significant accessibility challenges, particularly concerning contrast. Its extremely dark nature means that text or interactive elements using this color as a background require very light foreground colors (such as white or very pale shades of yellow or green) to meet WCAG (Web Content Accessibility Guidelines) standards for contrast ratios. Without sufficient contrast, users with visual impairments, including those with low vision or color blindness, will struggle to perceive the content. Therefore, web developers and designers must carefully evaluate color pairings, utilizing contrast checkers to ensure compliance with accessibility guidelines, typically aiming for a contrast ratio of at least 4.5:1 for normal text and 3:1 for large text. It's often safer to use a slightly lighter shade of blue or a darker shade of white, depending on which element you are trying to keep.

Shades

Digital Color Formats

RGB
3 8 23
RGB3 8 23
Red
Green
Blue
HSL
225deg 76.92% 5.1%
22576.925.1HSL
Hue
Saturation
Lightness
HWB
225deg 1.18% 90.98%
2251.1890.98HWB
Hue
Whiteness
Blackness
hex#030817
rgb3 8 23
hsl225deg 76.92% 5.1%
cmyk86.96% 65.22% 0% 90.98%
hwb225deg 1.18% 90.98%
xyz-d650 0 0.01
oklch0.1377 0.0353 263.08
oklab0.1377 0 -0.04
CMYK
86.96% 65.22% 0% 90.98%
86.9665.22090.98CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0 0 0.01
000.01XYZ
X
Y
Z
OKLCH
0.1377 0.0353 263.08
0.13770.0353263.08LCH
Lightness
Chroma
Hue
OKLAB
0.1377 0 -0.04
0.13770-0.04LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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