cas7777-86-1 · Trizma base · Tris(hydroxymethyl)aminomethane · Tris base · Sma 7Dupont CAS77 #ca4c48 Hex Color Code. The hexadecimal color code #ca4c48 is a shade of red. In the RGB color model #ca4c48 is composed of 79.22% red, 29.8% green and 28.24%