Blue Charcoal

#00031B

General Information

The hex color code #00031B, also known as Blue Charcoal, is a very dark shade of blue, almost appearing black. In the RGB color model, it is composed of 0% red, 1.18% green, and 10.59% blue. This combination results in a color that is perceived as deep, mysterious, and sophisticated. Due to its low saturation and very low lightness value, it falls into the category of near-black colors. The color evokes a sense of depth and can be used to create a feeling of calmness or introspection. It's a popular choice in designs aiming for a subtle and understated elegance. In terms of color theory, its deep and muted nature makes it suitable for creating contrast with lighter and brighter colors.

The color #00031B, also known as Blue Charcoal, presents significant accessibility challenges, particularly for users with visual impairments. Its extremely low luminance value (very close to black) results in very poor contrast against most background colors, including white. This lack of contrast makes it difficult for individuals with low vision to discern text or graphical elements rendered in this color. According to WCAG guidelines, sufficient contrast is essential for readability and usability. To ensure accessibility, avoid using #00031B for text or important interface elements unless paired with a very light color that provides a contrast ratio of at least 4.5:1 for normal text and 3:1 for large text. Tools like contrast checkers can assist in verifying compliance. Consider also providing alternative color schemes or allowing users to customize colors to meet their individual needs.

Shades

Digital Color Formats

RGB
0 3 27
RGB0 3 27
Red
Green
Blue
HSL
233.33deg 100% 5.29%
233.331005.29HSL
Hue
Saturation
Lightness
HWB
233.33deg 0% 89.41%
233.33089.41HWB
Hue
Whiteness
Blackness
hex#00031B
rgb0 3 27
hsl233.33deg 100% 5.29%
cmyk100% 88.89% 0% 89.41%
hwb233.33deg 0% 89.41%
xyz-d650 0 0.01
oklch0.1171 0.0585 262.93
oklab0.1171 -0.01 -0.06
CMYK
100% 88.89% 0% 89.41%
10088.89089.41CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0 0 0.01
000.01XYZ
X
Y
Z
OKLCH
0.1171 0.0585 262.93
0.11710.0585262.93LCH
Lightness
Chroma
Hue
OKLAB
0.1171 -0.01 -0.06
0.1171-0.01-0.06LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

Buttons