Chathams Blue

#1B4E7D

General Information about Chathams Blue

#1B4E7D, also known as Chathams Blue, is a deep and sophisticated shade of blue that evokes feelings of tranquility, reliability, and professionalism. It belongs to the blue color family, which is often associated with trust, stability, and wisdom. In the RGB color model, #1B4E7D consists of 10.6% red, 30.6% green, and 49% blue. Its CMYK values are 78% cyan, 37% magenta, 0% yellow, and 51% black. This hex code is commonly used in various design fields such as web development, graphic design, and interior decoration. The color's hex triplet is 1B4E7D, and its decimal equivalent is RGB(27, 78, 125). It offers a versatile option for creating visual interest and conveying a sense of calm and stability in different projects and applications.

The color #1B4E7D, also known as Chathams Blue, presents some accessibility challenges, especially when used as a background color for text. Due to its relatively low lightness value, it requires careful consideration of color contrast to ensure readability. According to WCAG guidelines, sufficient contrast is crucial for users with visual impairments. When pairing #1B4E7D with text, it is essential to use a light color such as white or a very pale yellow to meet the minimum contrast ratio of 4.5:1 for normal text and 3:1 for large text. Tools like contrast checkers can help verify compliance. Using darker text colors can make the content illegible for many users, hindering their ability to access information. Providing alternative high-contrast themes or options can further enhance accessibility for a broader audience.

Shades

Digital Color Formats

RGB
27 78 125
RGB27 78 125
Red
Green
Blue
HSL
208.78deg 64.47% 29.8%
208.7864.4729.8HSL
Hue
Saturation
Lightness
HWB
208.78deg 10.59% 50.98%
208.7810.5950.98HWB
Hue
Whiteness
Blackness
hex#1B4E7D
rgb27 78 125
hsl208.78deg 64.47% 29.8%
cmyk78.4% 37.6% 0% 50.98%
hwb208.78deg 10.59% 50.98%
xyz-d650.07 0.07 0.2
oklch0.4148 0.0954 249.81
oklab0.4148 -0.03 -0.09
CMYK
78.4% 37.6% 0% 50.98%
78.437.6050.98CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.07 0.07 0.2
0.070.070.2XYZ
X
Y
Z
OKLCH
0.4148 0.0954 249.81
0.41480.0954249.81LCH
Lightness
Chroma
Hue
OKLAB
0.4148 -0.03 -0.09
0.4148-0.03-0.09LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

Buttons