Chathams Blue

#1B5080

General Information

Chathams Blue, identified by the hexadecimal color code #1B5080, is a dark shade of blue that evokes feelings of calmness, stability, and professionalism. In the RGB color model, it is composed of 10.6% red, 31.4% green, and 50.2% blue. This color is often associated with trust, security, and intelligence, making it a popular choice for corporate branding and website design. Its muted tone lends itself well to creating a sophisticated and understated aesthetic. Chathams Blue is also frequently used in educational materials and healthcare settings due to its association with tranquility and focus. In the CMYK color model, it consists of high percentages of cyan and magenta, contributing to its cool and calming effect. Overall, #1B5080 is a versatile color that can effectively communicate a message of reliability and competence.

The hex color #1B5080, also known as Chathams Blue, presents some accessibility considerations for web developers. Its relatively dark hue means that it requires careful attention to contrast ratios when used with text or other interactive elements. According to WCAG guidelines, a contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text against its background. Therefore, when using #1B5080 for backgrounds, it is crucial to pair it with light-colored text (e.g., whites, creams, or very light yellows) to ensure readability and usability, especially for users with visual impairments. Similarly, if #1B5080 is used for text, a light background is required. Tools such as contrast checkers can help verify compliance with accessibility standards. Furthermore, consider providing alternative visual cues, such as underlines or icons, in addition to color to convey information, especially for users who may have difficulty distinguishing colors.

Shades

Digital Color Formats

RGB
27 80 128
RGB27 80 128
Red
Green
Blue
HSL
208.51deg 65.16% 30.39%
208.5165.1630.39HSL
Hue
Saturation
Lightness
HWB
208.51deg 10.59% 49.8%
208.5110.5949.8HWB
Hue
Whiteness
Blackness
hex#1B5080
rgb27 80 128
hsl208.51deg 65.16% 30.39%
cmyk78.91% 37.5% 0% 49.8%
hwb208.51deg 10.59% 49.8%
xyz-d650.07 0.08 0.21
oklch0.4217 0.0973 249.53
oklab0.4217 -0.03 -0.09
CMYK
78.91% 37.5% 0% 49.8%
78.9137.5049.8CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.07 0.08 0.21
0.070.080.21XYZ
X
Y
Z
OKLCH
0.4217 0.0973 249.53
0.42170.0973249.53LCH
Lightness
Chroma
Hue
OKLAB
0.4217 -0.03 -0.09
0.4217-0.03-0.09LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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