Chathams Blue

#1B4A80

General Information about Chathams Blue

The hexadecimal color #1B4A80, also known as Chathams Blue, is a dark shade of blue that evokes feelings of calmness, stability, and trust. It is composed of 10.6% red, 29% green, and 50.2% blue. In the RGB color space, it has the values R:27, G:74, B:128. In the CMYK color space, its composition is 78.9% cyan, 42.2% magenta, 0% yellow, and 49.8% black. This color is often associated with professionalism and reliability, making it a popular choice for corporate branding and web design. Its depth and richness make it suitable for creating a sense of authority and sophistication. The name 'Chathams Blue' suggests a connection to the sea, further enhancing its calming and serene qualities. It's a versatile color that can be used in various design contexts, from digital interfaces to interior decor.

The hex color #1B4A80, also known as Chathams Blue, presents some accessibility challenges, particularly regarding color contrast. When used as a background color, it's crucial to select a text color that provides sufficient contrast to ensure readability for users with visual impairments. According to WCAG guidelines, a contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text. White (#FFFFFF) or light grey text colors are generally better choices on this dark blue background. Tools like WebAIM's Contrast Checker can help determine if the contrast ratio meets accessibility standards. Ensuring proper contrast is vital for users with low vision or color blindness to perceive the content effectively. Avoid using this color for essential interactive elements without careful consideration of the contrast. Using darker text, such as black, would not be advisable. Also, when using #1B4A80, make sure any images you have are high resolution.

Shades

Digital Color Formats

RGB
27 74 128
RGB27 74 128
Red
Green
Blue
HSL
212.08deg 65.16% 30.39%
212.0865.1630.39HSL
Hue
Saturation
Lightness
HWB
212.08deg 10.59% 49.8%
212.0810.5949.8HWB
Hue
Whiteness
Blackness
hex#1B4A80
rgb27 74 128
hsl212.08deg 65.16% 30.39%
cmyk78.91% 42.19% 0% 49.8%
hwb212.08deg 10.59% 49.8%
xyz-d650.07 0.07 0.21
oklch0.4069 0.104 254.25
oklab0.4069 -0.03 -0.1
CMYK
78.91% 42.19% 0% 49.8%
78.9142.19049.8CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.07 0.07 0.21
0.070.070.21XYZ
X
Y
Z
OKLCH
0.4069 0.104 254.25
0.40690.104254.25LCH
Lightness
Chroma
Hue
OKLAB
0.4069 -0.03 -0.1
0.4069-0.03-0.1LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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