Blue Charcoal

#001017

General Information about #001017

The hexadecimal color code #001017 represents a very dark shade of blue, often referred to as Blue Charcoal. In the RGB color model, it is composed of 0% red, 6.27% green, and 9.02% blue. This combination results in a color that is perceived as almost black with a subtle blue undertone. The color is frequently used in design contexts where a dark, neutral color is desired, offering a slightly richer alternative to pure black. Due to its low luminance, #001017 can create a sophisticated and calming atmosphere when used appropriately. However, its darkness also necessitates careful consideration of contrast ratios when used with text or other visual elements to ensure accessibility and readability. The color evokes a sense of depth and quietude, making it a versatile choice in various applications.

The hex color #001017, also known as Blue Charcoal, presents significant accessibility challenges, particularly concerning color contrast. When used as a background color, text needs to be very light, such as white or a pale yellow, to ensure readability. According to WCAG guidelines, a contrast ratio of at least 4.5:1 is recommended for standard text and 3:1 for large text. Given the darkness of #001017, achieving this contrast ratio with darker text colors is nearly impossible. Therefore, it's crucial to carefully consider the foreground text color and test the contrast using accessibility tools. Additionally, avoid using this color for essential visual elements like buttons or links without providing sufficient visual cues, such as borders or icons, to compensate for the low contrast. Consider users with visual impairments who rely on sufficient contrast to navigate and understand content effectively. Always prioritize accessibility to create an inclusive and user-friendly experience.

Shades

Digital Color Formats

RGB
0 16 23
RGB0 16 23
Red
Green
Blue
HSL
198.26 100% 4.51%
198.261004.51HSL
Hue
Saturation
Lightness
HWB
198.26 0% 90.98%
198.26090.98HWB
Hue
Whiteness
Blackness
hex#001017
rgb0 16 23
hsl198.26 100% 4.51%
cmyk100% 30.43% 0% 90.98%
hwb198.26 0% 90.98%
xyz-d650 0 0.01
oklch0.1608 0.0303 224.22
oklab0.1608 -0.02 -0.02
CMYK
100% 30.43% 0% 90.98%
10030.43090.98CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0 0 0.01
000.01XYZ
X
Y
Z
OKLCH
0.1608 0.0303 224.22
0.16080.0303224.22LCH
Lightness
Chroma
Hue
OKLAB
0.1608 -0.02 -0.02
0.1608-0.02-0.02LAB
Lightness
Green–Red
Blue–Yellow

Alternative colors

Applications

Complementary color

Buttons