Canon has constantly utilized the colors red, black, and white, for their logos and other brand assets as well as social media profiles..
The hex code for their red is #CC0000 as indicated by various sources, including their own company website.
For the RGB of that shading, they have 204 red, 0 green, and 0 blue or (204, 0, 0).
In HSL, that is a hue of 0, 100% saturation, and 40% lightness or (0, 100%, 40%).
For their other brand color schemes, please continue reading below.