Chathams Blue

#1D4D7B

General Information about Chathams Blue

The hex color code #1D4D7B, also known as Chathams Blue, is a dark, muted shade of blue. It is composed of 11.4% red, 30.2% green, and 48.2% blue. In the RGB color model, this translates to 29 red, 77 green, and 123 blue. The corresponding CMYK values are 76.4% cyan, 37.4% magenta, 0% yellow, and 51.8% black. This color is often associated with feelings of calmness, stability, and trustworthiness. It is frequently used in corporate branding and website design to convey a sense of professionalism and reliability. Chathams Blue is named after the Chatham Islands, a remote archipelago east of New Zealand, possibly reflecting the color's association with the sea and vast open spaces. Its hexadecimal representation makes it easy to incorporate into digital designs and web applications.

The color #1D4D7B, also known as Chathams Blue, presents specific accessibility considerations for web design. Its relatively dark hue means it requires careful attention to contrast ratios, 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. For normal text (14pt/18px and above), a contrast ratio of at least 4.5:1 is recommended, while for large text (18pt/24px and above) and graphical elements, a ratio of 3:1 is considered acceptable. When using #1D4D7B as a background, pairing it with light-colored text such as white or a very pale yellow can help meet these contrast requirements. Conversely, if #1D4D7B is used for text, a light background is essential. Tools like WebAIM's contrast checker can assist in verifying compliance with accessibility standards and ensuring content is perceivable to a wide range of users. Also, always consider users with color blindness by providing alternative cues like icons or patterns.

Shades

Digital Color Formats

RGB
29 77 123
RGB29 77 123
Red
Green
Blue
HSL
209.36deg 61.84% 29.8%
209.3661.8429.8HSL
Hue
Saturation
Lightness
HWB
209.36deg 11.37% 51.76%
209.3611.3751.76HWB
Hue
Whiteness
Blackness
hex#1D4D7B
rgb29 77 123
hsl209.36deg 61.84% 29.8%
cmyk76.42% 37.4% 0% 51.76%
hwb209.36deg 11.37% 51.76%
xyz-d650.07 0.07 0.2
oklch0.4117 0.093 250.37
oklab0.4117 -0.03 -0.09
CMYK
76.42% 37.4% 0% 51.76%
76.4237.4051.76CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.07 0.07 0.2
0.070.070.2XYZ
X
Y
Z
OKLCH
0.4117 0.093 250.37
0.41170.093250.37LCH
Lightness
Chroma
Hue
OKLAB
0.4117 -0.03 -0.09
0.4117-0.03-0.09LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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