Chathams Blue

#1B5280

General Information

Chathams Blue, represented by the hexadecimal color code #1B5280, is a dark, muted shade of blue that evokes feelings of calmness and stability. It belongs to the blue color family, known for its association with trustworthiness, intelligence, and efficiency. In the RGB color model, #1B5280 consists of 10.6% red, 32.2% green, and 50.2% blue. The CMYK color model values are 79% cyan, 36% magenta, 0% yellow, and 50% black. This color is named after the Chatham Islands, which is part of New Zealand. It is often used in contexts where a sense of professionalism and reliability is desired. Its subdued nature makes it a versatile choice for various design applications, ranging from web design to branding. It works well as a background color or as an accent color, depending on the desired effect.

The color #1B5280, also known as Chathams Blue, presents some accessibility challenges, primarily due to its relatively low luminance. When used as text on a white background, it may not meet the contrast ratios recommended by WCAG (Web Content Accessibility Guidelines) for readability, especially for users with visual impairments. A contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text. Using this color for text requires careful consideration of the background color to ensure sufficient contrast. For buttons or interactive elements, providing clear visual cues beyond color, such as underlines or icons, can enhance usability. Using a lighter tint or a darker shade of blue, or pairing it with a contrasting color for text, can significantly improve accessibility. Testing the color combination with accessibility evaluation tools is crucial to ensure compliance with accessibility standards and provide an inclusive user experience.

Shades

Digital Color Formats

RGB
27 82 128
RGB27 82 128
Red
Green
Blue
HSL
207.33deg 65.16% 30.39%
207.3365.1630.39HSL
Hue
Saturation
Lightness
HWB
207.33deg 10.59% 49.8%
207.3310.5949.8HWB
Hue
Whiteness
Blackness
hex#1B5280
rgb27 82 128
hsl207.33deg 65.16% 30.39%
cmyk78.91% 35.94% 0% 49.8%
hwb207.33deg 10.59% 49.8%
xyz-d650.07 0.08 0.22
oklch0.4267 0.0952 247.79
oklab0.4267 -0.04 -0.09
CMYK
78.91% 35.94% 0% 49.8%
78.9135.94049.8CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.07 0.08 0.22
0.070.080.22XYZ
X
Y
Z
OKLCH
0.4267 0.0952 247.79
0.42670.0952247.79LCH
Lightness
Chroma
Hue
OKLAB
0.4267 -0.04 -0.09
0.4267-0.04-0.09LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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