Chathams Blue

#1B5380

General Information about Chathams Blue

Chathams Blue, represented by the hexadecimal color code #1B5380, is a dark, muted shade of blue. It is named after the Chatham Islands, a remote archipelago located in the Pacific Ocean. The color evokes feelings of calmness, stability, and trustworthiness, making it a popular choice for branding and design in various industries. In the RGB color model, #1B5380 consists of 10.6% red, 32.5% green, and 50.2% blue. This particular combination results in a color that is both sophisticated and understated. It's often associated with professionalism and reliability, making it a suitable option for corporate branding and designs that need to convey a sense of security and confidence.

The color #1B5380, also known as Chathams Blue, presents some accessibility challenges, especially when used for text. Its relatively low luminance value of 0.104 necessitates careful consideration of contrast ratios against background colors. To ensure readability and compliance with WCAG guidelines, it's crucial to pair this color with significantly lighter shades for text or interactive elements. A contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text. When used as a background, pairing it with white or very light grays can provide sufficient contrast. Tools like contrast checkers can be helpful in determining appropriate color pairings. Also, avoid using this color for crucial information if the user interface has not been tested for people with visual impairments.

Shades

Digital Color Formats

RGB
27 83 128
RGB27 83 128
Red
Green
Blue
HSL
206.73deg 65.16% 30.39%
206.7365.1630.39HSL
Hue
Saturation
Lightness
HWB
206.73deg 10.59% 49.8%
206.7310.5949.8HWB
Hue
Whiteness
Blackness
hex#1B5380
rgb27 83 128
hsl206.73deg 65.16% 30.39%
cmyk78.91% 35.16% 0% 49.8%
hwb206.73deg 10.59% 49.8%
xyz-d650.07 0.08 0.22
oklch0.4292 0.0943 246.89
oklab0.4292 -0.04 -0.09
CMYK
78.91% 35.16% 0% 49.8%
78.9135.16049.8CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.07 0.08 0.22
0.070.080.22XYZ
X
Y
Z
OKLCH
0.4292 0.0943 246.89
0.42920.0943246.89LCH
Lightness
Chroma
Hue
OKLAB
0.4292 -0.04 -0.09
0.4292-0.04-0.09LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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