Blue Charcoal

#00121B

General Information about #00121B

#00121B, known as Blue Charcoal, is a very dark, muted shade of blue. It is composed of 0% red, 7.1% green, and 10.6% blue. In the RGB color model, it is represented as (0, 18, 27). The hexadecimal color code #00121B is commonly used in web design and graphic design to specify colors in a digital format. This color evokes a sense of depth, sophistication, and tranquility. Because of its darkness, it’s frequently used as a background color, but considerations must be made to ensure readability and accessibility when pairing it with text or other foreground elements. Blue Charcoal can also be incorporated to convey a serious or professional tone. It's understated nature allows it to blend well with other colors, particularly lighter shades that offer visual contrast.

The hex color #00121B, also known as Blue Charcoal, presents significant accessibility challenges due to its extremely low luminance. When used as text against a white background, or vice versa, it fails all levels of WCAG (Web Content Accessibility Guidelines) contrast requirements. A contrast ratio of at least 4.5:1 is needed for normal text and 3:1 for large text to meet WCAG AA standards. #00121B falls far short of these ratios, making it difficult for users with visual impairments to read. To improve accessibility, consider using lighter shades for text on a #00121B background, or using #00121B as an accent color rather than for large blocks of text. Also, provide sufficient contrast in graphical elements and user interface components. Tools like contrast checkers can help ensure compliance with accessibility standards.

Shades

Digital Color Formats

RGB
0 18 27
RGB0 18 27
Red
Green
Blue
HSL
200deg 100% 5.29%
2001005.29HSL
Hue
Saturation
Lightness
HWB
200deg 0% 89.41%
200089.41HWB
Hue
Whiteness
Blackness
hex#00121B
rgb0 18 27
hsl200deg 100% 5.29%
cmyk100% 33.33% 0% 89.41%
hwb200deg 0% 89.41%
xyz-d650 0.01 0.01
oklch0.1704 0.0335 228.91
oklab0.1704 -0.02 -0.03
CMYK
100% 33.33% 0% 89.41%
10033.33089.41CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0 0.01 0.01
00.010.01XYZ
X
Y
Z
OKLCH
0.1704 0.0335 228.91
0.17040.0335228.91LCH
Lightness
Chroma
Hue
OKLAB
0.1704 -0.02 -0.03
0.1704-0.02-0.03LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

Buttons