Chathams Blue

#1B4780

General Information about Chathams Blue

The hex color #1B4780, commonly referred to as Chathams Blue, is a dark shade of blue that conveys a sense of sophistication and depth. In the RGB color model, it consists of 10.59% red, 27.84% green, and 50.2% blue. In the CMYK color model, which is commonly used for printing, its components are 79% cyan, 44% magenta, 0% yellow, and 50% black. This color is often associated with trustworthiness, stability, and knowledge, making it a popular choice for corporate branding and professional websites. The name 'Chathams Blue' likely derives from its resemblance to the color of the ocean near the Chatham Islands, which are located east of New Zealand. It finds extensive application in various domains, from graphic design to interior decoration.

The hex color #1B4780, also known as Chathams Blue, presents some accessibility considerations for web developers. Its relatively dark hue means careful attention must be paid to color contrast, especially when used for text or interactive elements. According to WCAG guidelines, sufficient contrast between text and background is crucial for readability, particularly for users with visual impairments. A contrast ratio of at least 4.5:1 is recommended for standard text and 3:1 for large text. When using #1B4780 as a background, light-colored text is necessary to meet these standards. Testing with accessibility tools can help ensure compliance, and considering alternative color combinations may be necessary for optimal accessibility.

Shades

Digital Color Formats

RGB
27 71 128
RGB27 71 128
Red
Green
Blue
HSL
213.86deg 65.16% 30.39%
213.8665.1630.39HSL
Hue
Saturation
Lightness
HWB
213.86deg 10.59% 49.8%
213.8610.5949.8HWB
Hue
Whiteness
Blackness
hex#1B4780
rgb27 71 128
hsl213.86deg 65.16% 30.39%
cmyk78.91% 44.53% 0% 49.8%
hwb213.86deg 10.59% 49.8%
xyz-d650.07 0.06 0.21
oklch0.3996 0.1076 256.34
oklab0.3996 -0.03 -0.1
CMYK
78.91% 44.53% 0% 49.8%
78.9144.53049.8CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.07 0.06 0.21
0.070.060.21XYZ
X
Y
Z
OKLCH
0.3996 0.1076 256.34
0.39960.1076256.34LCH
Lightness
Chroma
Hue
OKLAB
0.3996 -0.03 -0.1
0.3996-0.03-0.1LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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