Chathams Blue

#1B4F80

General Information about Chathams Blue (#1B4F80)

The color #1B4F80, also known as Chathams Blue, is a dark, muted shade of blue that evokes feelings of calmness, stability, and sophistication. It belongs to the blue color family and is characterized by its relatively low saturation and medium darkness. In the RGB color model, it is composed of 10.6% red, 31% green, and 50.2% blue. In the CMYK color model, it consists of 79% cyan, 38% magenta, 0% yellow, and 50% black. This color is often associated with trust, reliability, and professionalism, making it a popular choice for corporate branding and website design. Its calming nature makes it suitable for creating a sense of tranquility and security.

The hex color #1B4F80, also known as Chathams Blue, presents some accessibility challenges, particularly concerning color contrast. When used as a background color, it's crucial to select text colors that provide sufficient contrast to ensure readability. A light text color, such as white or a very light gray, is generally recommended. Tools like the WebAIM contrast checker can be invaluable in verifying that the contrast ratio meets WCAG (Web Content Accessibility Guidelines) standards, aiming for a minimum ratio of 4.5:1 for standard text and 3:1 for large text. Careful consideration of color pairings and their impact on users with visual impairments is essential when using #1B4F80 in web design or other digital content. Avoid using #1B4F80 for elements where color alone conveys important information.

Shades

Digital Color Formats

RGB
27 79 128
RGB27 79 128
Red
Green
Blue
HSL
209.11deg 65.16% 30.39%
209.1165.1630.39HSL
Hue
Saturation
Lightness
HWB
209.11deg 10.59% 49.8%
209.1110.5949.8HWB
Hue
Whiteness
Blackness
hex#1B4F80
rgb27 79 128
hsl209.11deg 65.16% 30.39%
cmyk78.91% 38.28% 0% 49.8%
hwb209.11deg 10.59% 49.8%
xyz-d650.07 0.07 0.21
oklch0.4192 0.0984 250.37
oklab0.4192 -0.03 -0.09
CMYK
78.91% 38.28% 0% 49.8%
78.9138.28049.8CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.07 0.07 0.21
0.070.070.21XYZ
X
Y
Z
OKLCH
0.4192 0.0984 250.37
0.41920.0984250.37LCH
Lightness
Chroma
Hue
OKLAB
0.4192 -0.03 -0.09
0.4192-0.03-0.09LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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