Chathams Blue

#1B4F7D

General Information

Chathams Blue, represented by the hexadecimal color code #1B4F7D, is a deep, muted shade of blue. It belongs to the family of blue colors, often associated with traits like calmness, stability, and trustworthiness. In the RGB color model, it consists of 10.6% red, 31% green, and 49% blue. Its CMYK values are 78% cyan, 37% magenta, 0% yellow, and 51% black. This color is not particularly vibrant or saturated, which lends it a more sophisticated and understated feel. It's often chosen for its calming and professional qualities, making it suitable for a wide range of applications where a sense of reliability and composure is desired.

The hex color #1B4F7D, also known as Chathams Blue, presents several accessibility considerations for web developers. Its relatively dark hue necessitates careful attention to color contrast. When used as a background, it requires light-colored text 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 defined by WCAG guidelines. Insufficient contrast can render content inaccessible to users with low vision or color blindness. Additionally, avoid using this color as the sole means of conveying information, as users who cannot distinguish it from adjacent colors may miss critical details. Consider providing alternative cues, such as text labels or icons, to enhance accessibility. Proper implementation of ARIA attributes can further improve the accessibility of elements using this color.

Shades

Digital Color Formats

RGB
27 79 125
RGB27 79 125
Red
Green
Blue
HSL
208.16deg 64.47% 29.8%
208.1664.4729.8HSL
Hue
Saturation
Lightness
HWB
208.16deg 10.59% 50.98%
208.1610.5950.98HWB
Hue
Whiteness
Blackness
hex#1B4F7D
rgb27 79 125
hsl208.16deg 64.47% 29.8%
cmyk78.4% 36.8% 0% 50.98%
hwb208.16deg 10.59% 50.98%
xyz-d650.07 0.07 0.2
oklch0.4173 0.0943 248.93
oklab0.4173 -0.03 -0.09
CMYK
78.4% 36.8% 0% 50.98%
78.436.8050.98CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.07 0.07 0.2
0.070.070.2XYZ
X
Y
Z
OKLCH
0.4173 0.0943 248.93
0.41730.0943248.93LCH
Lightness
Chroma
Hue
OKLAB
0.4173 -0.03 -0.09
0.4173-0.03-0.09LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

Buttons