CSS 1 y 2
- Palabras clave - Son 17: aqua, black, blue, fuchsia, gray, green, lime, maroon, navy, olive, orange, purple, red, silver, teal, white, yellow.
- RGB decimal - rgb(71, 98, 176)
- RGB porcentual - rgb(27%, 38%, 69%)
- RGB hexadecimal - #4762B0
CSS 3
- RGBA - rgba(255, 0, 0, 0.2)
- HSL (Hue, Saturation, Lightness – Matiz, Saturación, Luminosidad) - hsl(120,100%, 50%)
- HSLA - hsla(0,100%,50%,0.2)
- Opacity - opacity: 0.2