Blue Charcoal

#040D17

General Information about #040D17

The hex color #040D17, also known as Blue Charcoal, is a very dark shade of blue with a hint of green, often described as a deep, muted, and sophisticated color. It resides in the cool color family. In the RGB color model, it is composed of 1.57% red, 5.1% green, and 8.63% blue. In the CMYK color model, it consists of 81.74% cyan, 40.74% magenta, 0% yellow, and 91.37% black. This color is frequently used in designs that require a sense of depth, elegance, or mystery. Blue Charcoal is often associated with qualities such as calmness, sophistication, and professionalism. It is a versatile color that can be used as a background to make brighter colors pop or as a subtle accent to create a sense of depth and visual interest. It's a popular choice for designs aiming for a modern and understated look.

The hex color #040D17, also known as Blue Charcoal, presents significant accessibility challenges, particularly concerning color contrast. When used as a foreground color for text or interactive elements, it requires careful pairing with a very light background to ensure sufficient contrast for readability. According to WCAG guidelines, the contrast ratio between text and background should be at least 4.5:1 for normal text and 3:1 for large text. Given its dark nature, #040D17 will likely fail these contrast checks against many common background colors. Therefore, designers and developers should conduct thorough contrast testing using tools like the WebAIM Contrast Checker or similar resources before implementing this color in user interfaces. Consider using lighter shades or tints of complementary colors for better accessibility. Ensuring sufficient contrast is crucial for users with visual impairments and contributes to a more inclusive user experience.

Shades

Digital Color Formats

RGB
4 13 23
RGB4 13 23
Red
Green
Blue
HSL
211.58deg 70.37% 5.29%
211.5870.375.29HSL
Hue
Saturation
Lightness
HWB
211.58deg 1.57% 90.98%
211.581.5790.98HWB
Hue
Whiteness
Blackness
hex#040D17
rgb4 13 23
hsl211.58deg 70.37% 5.29%
cmyk82.61% 43.48% 0% 90.98%
hwb211.58deg 1.57% 90.98%
xyz-d650 0 0.01
oklch0.155 0.0267 248.6
oklab0.155 -0.01 -0.02
CMYK
82.61% 43.48% 0% 90.98%
82.6143.48090.98CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0 0 0.01
000.01XYZ
X
Y
Z
OKLCH
0.155 0.0267 248.6
0.1550.0267248.6LCH
Lightness
Chroma
Hue
OKLAB
0.155 -0.01 -0.02
0.155-0.01-0.02LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

Buttons