Chathams Blue

#1F5479

General Information about #1F5479

The hexadecimal color code #1F5479 represents a shade of blue often referred to as "Chathams Blue." It is composed of 12.2% red, 33% green, and 47.5% blue. In the RGB color model, this translates to 31 red, 84 green, and 121 blue. The color lies in the cool spectrum of the color wheel and exudes a sense of tranquility, stability, and sophistication. This particular shade of blue is often associated with professionalism, trust, and reliability. The CMYK values for #1F5479 are 74% cyan, 31% magenta, 0% yellow, and 53% black. This means that to create this color in print, one would use a high percentage of cyan and magenta, with no yellow and a significant amount of black ink.

The color #1F5479, also known as Chathams Blue, presents some accessibility challenges, especially when used as a background or text color. Its relatively low luminance of 0.13 makes it difficult to provide sufficient contrast with other colors, particularly white or light gray. According to WCAG (Web Content Accessibility Guidelines), a contrast ratio of at least 4.5:1 is required for normal text and 3:1 for large text to ensure readability for users with visual impairments. When used as a background, the color may cause eye strain for some users. To improve accessibility, consider pairing #1F5479 with lighter shades like off-white or light yellow to ensure sufficient contrast. Tools like the WebAIM contrast checker can help assess contrast ratios and identify appropriate color pairings. Moreover, avoid using this color for critical UI elements without thorough testing for usability.

Shades

Digital Color Formats

RGB
31 84 121
RGB31 84 121
Red
Green
Blue
HSL
204.67deg 59.21% 29.8%
204.6759.2129.8HSL
Hue
Saturation
Lightness
HWB
204.67deg 12.16% 52.55%
204.6712.1652.55HWB
Hue
Whiteness
Blackness
hex#1F5479
rgb31 84 121
hsl204.67deg 59.21% 29.8%
cmyk74.38% 30.58% 0% 52.55%
hwb204.67deg 12.16% 52.55%
xyz-d650.07 0.08 0.19
oklch0.4289 0.0828 242.79
oklab0.4289 -0.04 -0.07
CMYK
74.38% 30.58% 0% 52.55%
74.3830.58052.55CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.07 0.08 0.19
0.070.080.19XYZ
X
Y
Z
OKLCH
0.4289 0.0828 242.79
0.42890.0828242.79LCH
Lightness
Chroma
Hue
OKLAB
0.4289 -0.04 -0.07
0.4289-0.04-0.07LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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