Chathams Blue

#1D4C7E

General Information about Chathams Blue

The color #1D4C7E, also known as Chathams Blue, is a dark shade of blue that evokes feelings of calmness, trust, and stability. It belongs to the blue color family and has a hexadecimal value of #1D4C7E. In the RGB color model, it is composed of 11.4% red, 29.8% green, and 49.4% blue. The CMYK color model represents it as 77% cyan, 40% magenta, 0% yellow, and 51% black. This color is often associated with professionalism, reliability, and intelligence, making it a popular choice for corporate branding and user interface design. Its subdued nature allows it to be used effectively in backgrounds or as an accent color to create a sense of sophistication.

The color #1D4C7E, also known as Chathams Blue, presents some accessibility challenges. Its relatively low luminance of approximately 0.12 makes it difficult to use as text on a white background, as it fails WCAG contrast ratio requirements for both normal and large text sizes. To ensure readability, it is advisable to pair this color with lighter shades, such as whites, creams, or light yellows, which provide sufficient contrast. When using #1D4C7E for interactive elements, consider providing alternative visual cues like borders or icons to enhance usability for users with visual impairments. Thoughtful application of color contrast principles is essential to making web content accessible and inclusive.

Shades

Digital Color Formats

RGB
29 76 126
RGB29 76 126
Red
Green
Blue
HSL
210.93deg 62.58% 30.39%
210.9362.5830.39HSL
Hue
Saturation
Lightness
HWB
210.93deg 11.37% 50.59%
210.9311.3750.59HWB
Hue
Whiteness
Blackness
hex#1D4C7E
rgb29 76 126
hsl210.93deg 62.58% 30.39%
cmyk76.98% 39.68% 0% 50.59%
hwb210.93deg 11.37% 50.59%
xyz-d650.07 0.07 0.21
oklch0.4111 0.0982 252.59
oklab0.4111 -0.03 -0.09
CMYK
76.98% 39.68% 0% 50.59%
76.9839.68050.59CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.07 0.07 0.21
0.070.070.21XYZ
X
Y
Z
OKLCH
0.4111 0.0982 252.59
0.41110.0982252.59LCH
Lightness
Chroma
Hue
OKLAB
0.4111 -0.03 -0.09
0.4111-0.03-0.09LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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