Chathams Blue

#1B4E7C

General Information about Chathams Blue

The hexadecimal color #1B4E7C, also known as Chathams Blue, is a dark shade of blue that conveys a sense of calmness, stability, and professionalism. It is composed of 10.6% red, 30.6% green, and 48.6% blue. In the RGB color model, this equates to 27 red, 78 green, and 124 blue. The corresponding CMYK values are 0.78, 0.37, 0.00, and 0.51. This color is often associated with trust, security, and authority, making it a popular choice for corporate branding, government websites, and financial institutions. Chathams Blue is a versatile color that can be used in a variety of applications to create a sophisticated and reliable impression.

The color #1B4E7C, also known as Chathams Blue, presents some accessibility challenges. Its relatively low lightness value means it offers insufficient contrast against white backgrounds for body text, failing WCAG guidelines. Using it for large headings or graphical elements is more acceptable. When paired with text, consider using a light color such as #FFFFFF or a very light shade of yellow or green to ensure readability. This dark blue shade might pose difficulties for users with low vision or color blindness if not handled carefully in interface design. Tools measuring contrast ratios can help determine appropriate pairings for improved usability. Ensuring sufficient contrast is crucial for making content accessible to all users.

Shades

Digital Color Formats

RGB
27 78 124
RGB27 78 124
Red
Green
Blue
HSL
208.45deg 64.24% 29.61%
208.4564.2429.61HSL
Hue
Saturation
Lightness
HWB
208.45deg 10.59% 51.37%
208.4510.5951.37HWB
Hue
Whiteness
Blackness
hex#1B4E7C
rgb27 78 124
hsl208.45deg 64.24% 29.61%
cmyk78.23% 37.1% 0% 51.37%
hwb208.45deg 10.59% 51.37%
xyz-d650.07 0.07 0.2
oklch0.4142 0.094 249.32
oklab0.4142 -0.03 -0.09
CMYK
78.23% 37.1% 0% 51.37%
78.2337.1051.37CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.07 0.07 0.2
0.070.070.2XYZ
X
Y
Z
OKLCH
0.4142 0.094 249.32
0.41420.094249.32LCH
Lightness
Chroma
Hue
OKLAB
0.4142 -0.03 -0.09
0.4142-0.03-0.09LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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