Cello

#213A5B

General Information about Cello (#213A5B)

The hexadecimal color #213A5B, also known as Cello, is a dark shade of blue with a somewhat muted tone. It belongs to the broader family of blue colors, which are often associated with qualities such as stability, trust, intelligence, and calmness. In the RGB (Red, Green, Blue) color model, #213A5B is composed of 12.94% red, 22.75% green, and 35.69% blue. This combination results in a color that is both deep and somewhat mysterious. In the CMYK (Cyan, Magenta, Yellow, Key/Black) color model, it consists of 64% cyan, 36% magenta, 0% yellow, and 64% black. This indicates that the color leans heavily on cyan, which contributes to its blue hue, with a significant amount of black adding to its darkness. Colors similar to Cello include navy blue and other deep blues, all of which share the same sense of sophistication and reliability. Its subdued nature makes it a versatile choice for various applications, ranging from web design to print media.

The color #213A5B, a deep shade of blue often referred to as Cello, presents some accessibility considerations for web developers. Its relatively low luminance value means it requires careful pairing with contrasting colors to ensure readability, especially for users with visual impairments. When used as a background color, it necessitates light-colored text to meet WCAG (Web Content Accessibility Guidelines) standards for contrast ratios. A contrast ratio of at least 4.5:1 is recommended for standard text and 3:1 for large text. Developers should use tools to check the contrast ratio between text and background colors. Furthermore, avoid using this color as the sole means of conveying information, such as in error messages or status indicators, as colorblind users may not be able to differentiate it from other colors. Supplement color cues with text labels, icons, or patterns to ensure universal accessibility. When using this color for interactive elements like buttons or links, ensure that hover and focus states provide sufficient contrast to indicate interactivity clearly.

Shades

Digital Color Formats

RGB
33 58 91
RGB33 58 91
Red
Green
Blue
HSL
214.14deg 46.77% 24.31%
214.1446.7724.31HSL
Hue
Saturation
Lightness
HWB
214.14deg 12.94% 64.31%
214.1412.9464.31HWB
Hue
Whiteness
Blackness
hex#213A5B
rgb33 58 91
hsl214.14deg 46.77% 24.31%
cmyk63.74% 36.26% 0% 64.31%
hwb214.14deg 12.94% 64.31%
xyz-d650.04 0.04 0.1
oklch0.3453 0.0661 255.9
oklab0.3453 -0.02 -0.06
CMYK
63.74% 36.26% 0% 64.31%
63.7436.26064.31CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.04 0.04 0.1
0.040.040.1XYZ
X
Y
Z
OKLCH
0.3453 0.0661 255.9
0.34530.0661255.9LCH
Lightness
Chroma
Hue
OKLAB
0.3453 -0.02 -0.06
0.3453-0.02-0.06LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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