Chathams Blue

#1B4D7F

General Information about #1B4D7F

The hexadecimal color #1B4D7F, also known as Chathams Blue, is a deep, muted shade of blue with a subtle, almost grayish undertone. It belongs to the blue color family and is often associated with qualities like stability, trust, and professionalism. In the RGB color model, #1B4D7F consists of 10.59% red, 30.2% green, and 49.8% blue. Its CMYK values are 79% cyan, 39% magenta, 0% yellow, and 50% black. This color is widely used in corporate branding and website design to convey a sense of reliability and sophistication. Its somewhat desaturated nature makes it a versatile choice that can be paired with both neutral and vibrant colors, depending on the desired effect. Its subtle depth makes it suitable for both background and foreground elements.

The color #1B4D7F, also known as Chathams Blue, presents some accessibility considerations for web design. Its darkness value falls within a range that necessitates careful attention to contrast ratios, particularly when used for text or interactive elements. When employing #1B4D7F as a background color, it is crucial to select text colors that provide sufficient contrast to ensure readability for users with visual impairments. A contrast ratio of at least 4.5:1 is recommended for standard text, and 3:1 for large text, as per WCAG guidelines. Lighter shades of yellow, white, or even a lighter tint of blue may offer suitable contrast. Conversely, using very dark colors for text on a #1B4D7F background should be avoided as it can make the text difficult or impossible to read. Ensuring sufficient contrast is not only beneficial for users with disabilities but also enhances the overall user experience for all visitors, especially when viewing the website on different devices or in varying lighting conditions.

Shades

Digital Color Formats

RGB
27 77 127
RGB27 77 127
Red
Green
Blue
HSL
210deg 64.94% 30.2%
21064.9430.2HSL
Hue
Saturation
Lightness
HWB
210deg 10.59% 50.2%
21010.5950.2HWB
Hue
Whiteness
Blackness
hex#1B4D7F
rgb27 77 127
hsl210deg 64.94% 30.2%
cmyk78.74% 39.37% 0% 50.2%
hwb210deg 10.59% 50.2%
xyz-d650.07 0.07 0.21
oklch0.4136 0.0992 251.56
oklab0.4136 -0.03 -0.09
CMYK
78.74% 39.37% 0% 50.2%
78.7439.37050.2CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.07 0.07 0.21
0.070.070.21XYZ
X
Y
Z
OKLCH
0.4136 0.0992 251.56
0.41360.0992251.56LCH
Lightness
Chroma
Hue
OKLAB
0.4136 -0.03 -0.09
0.4136-0.03-0.09LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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