Chathams Blue

#1B4E80

General Information about Chathams Blue

The hexadecimal color #1B4E80, commonly known as Chathams Blue, is a deep, muted shade of blue with a slight grayish undertone. It is located in the blue color range of the spectrum and exhibits characteristics of both coolness and sophistication. In the RGB color model, #1B4E80 is composed of 10.6% red, 30.6% green, and 50.2% blue. The CMYK representation is 79% cyan, 39% magenta, 0% yellow, and 50% black. This color evokes a sense of calmness, stability, and professionalism, often associated with trust and reliability. Chathams Blue is frequently used in corporate branding, web design, and interior decoration to create a sense of trustworthiness and dependability.

The color #1B4E80, also known as Chathams Blue, presents some accessibility challenges. Its relatively low luminance can result in insufficient contrast when used as text against a white background, potentially failing WCAG standards for readability. A contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text. Using this color for text requires careful consideration of the background color to ensure sufficient contrast. If the background is light, consider using a darker shade of blue or a completely different color to improve readability. For interactive elements like buttons, ensure a clear visual distinction on hover or focus states to meet accessibility guidelines. Proper testing with accessibility tools is crucial to validate that the color combination meets the necessary contrast requirements for users with visual impairments.

Shades

Digital Color Formats

RGB
27 78 128
RGB27 78 128
Red
Green
Blue
HSL
209.7deg 65.16% 30.39%
209.765.1630.39HSL
Hue
Saturation
Lightness
HWB
209.7deg 10.59% 49.8%
209.710.5949.8HWB
Hue
Whiteness
Blackness
hex#1B4E80
rgb27 78 128
hsl209.7deg 65.16% 30.39%
cmyk78.91% 39.06% 0% 49.8%
hwb209.7deg 10.59% 49.8%
xyz-d650.07 0.07 0.21
oklch0.4167 0.0995 251.19
oklab0.4167 -0.03 -0.09
CMYK
78.91% 39.06% 0% 49.8%
78.9139.06049.8CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.07 0.07 0.21
0.070.070.21XYZ
X
Y
Z
OKLCH
0.4167 0.0995 251.19
0.41670.0995251.19LCH
Lightness
Chroma
Hue
OKLAB
0.4167 -0.03 -0.09
0.4167-0.03-0.09LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

Buttons