Chathams Blue

#1A4E81

General Information about #1A4E81 (Chathams Blue)

The hex color #1A4E81, also known as Chathams Blue, is a dark shade of blue with a touch of cyan. It belongs to the family of blue colors and is often associated with calmness, stability, and trustworthiness. In the RGB color model, it is composed of 10.2% red, 30.6% green, and 50.6% blue. In the CMYK color model, which is often used for printing, it consists of 80% cyan, 39% magenta, 0% yellow, and 49% black. The hue angle is 210 degrees, the saturation is 66.7%, and the lightness is 30.4%. This color is named after the Chatham Islands, located east of New Zealand, reflecting its association with the ocean and nautical themes. It's a color often used to invoke a sense of professionalism and reliability.

The hex color #1A4E81, also known as Chathams Blue, presents some accessibility challenges. Its relatively low luminance value of 0.055 means it requires careful consideration when used as a foreground color against a background. 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 to ensure readability for users with visual impairments. Using #1A4E81 for text on a white background (or any light color) would likely fail these contrast tests. Therefore, it is advisable to pair it with significantly lighter colors or use it for graphical elements where text is not involved. Also, providing alternative styling options for users to customize the color scheme can improve accessibility for those with specific visual needs. When used in interactive elements, sufficient color contrast must be maintained for focus indicators to ensure keyboard navigability.

Shades

Digital Color Formats

RGB
26 78 129
RGB26 78 129
Red
Green
Blue
HSL
209.71deg 66.45% 30.39%
209.7166.4530.39HSL
Hue
Saturation
Lightness
HWB
209.71deg 10.2% 49.41%
209.7110.249.41HWB
Hue
Whiteness
Blackness
hex#1A4E81
rgb26 78 129
hsl209.71deg 66.45% 30.39%
cmyk79.84% 39.53% 0% 49.41%
hwb209.71deg 10.2% 49.41%
xyz-d650.07 0.07 0.22
oklch0.417 0.1012 251.32
oklab0.417 -0.03 -0.1
CMYK
79.84% 39.53% 0% 49.41%
79.8439.53049.41CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.07 0.07 0.22
0.070.070.22XYZ
X
Y
Z
OKLCH
0.417 0.1012 251.32
0.4170.1012251.32LCH
Lightness
Chroma
Hue
OKLAB
0.417 -0.03 -0.1
0.417-0.03-0.1LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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