Chathams Blue

#1B5180

General Information about Chathams Blue

The color #1B5180, also known as Chathams Blue, is a deep, muted shade of blue within the larger blue color family. It's characterized by its relative darkness and subtle gray undertones, giving it a sophisticated and calming appearance. In the RGB color model, #1B5180 consists of 10.6% red, 31.8% green, and 50.2% blue. This combination results in a color that is perceived as stable, trustworthy, and reliable. Chathams Blue is often associated with qualities such as depth, intelligence, and serenity. Its hexadecimal representation, #1B5180, is widely used in digital applications for web design, graphic design, and other visual media to ensure color consistency across different platforms and devices. Its CMYK values are C80 M37 Y0 K50.

The hex color #1B5180, also known as Chathams Blue, presents specific accessibility considerations, particularly in web design. When used as a foreground color, it requires careful selection of a contrasting background color to ensure sufficient readability for users with visual impairments. According to WCAG (Web Content Accessibility Guidelines), the contrast ratio between the text and background should be at least 4.5:1 for normal text and 3:1 for large text to meet AA standards. Using online contrast checker tools is advisable to verify compliance. When used for non-text elements, a contrast ratio of 3:1 with the adjacent color(s) is required. Due to its darker nature, #1B5180 works best with lighter background colors like whites, light greys, or pale yellows. Additionally, avoid using this color as the sole indicator for interactive elements; supplement it with other visual cues, such as underlines or icons, to aid users who may not perceive color differences effectively.

Shades

Digital Color Formats

RGB
27 81 128
RGB27 81 128
Red
Green
Blue
HSL
207.92deg 65.16% 30.39%
207.9265.1630.39HSL
Hue
Saturation
Lightness
HWB
207.92deg 10.59% 49.8%
207.9210.5949.8HWB
Hue
Whiteness
Blackness
hex#1B5180
rgb27 81 128
hsl207.92deg 65.16% 30.39%
cmyk78.91% 36.72% 0% 49.8%
hwb207.92deg 10.59% 49.8%
xyz-d650.07 0.08 0.22
oklch0.4242 0.0963 248.67
oklab0.4242 -0.04 -0.09
CMYK
78.91% 36.72% 0% 49.8%
78.9136.72049.8CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.07 0.08 0.22
0.070.080.22XYZ
X
Y
Z
OKLCH
0.4242 0.0963 248.67
0.42420.0963248.67LCH
Lightness
Chroma
Hue
OKLAB
0.4242 -0.04 -0.09
0.4242-0.04-0.09LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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