There are several possibilities.
Strontium is probably the most beautiful red, but many of its salts are hygroscopic.
red food colouring;)
RED
white
Red. You can't make a pimary color out of a secondary color.
add more black or dark red
Add blue colour in red.
mostly red and a bit of yellow
To make orange into red, you would add a darker shade of red or a small amount of magenta. Adding a darker red or magenta will help deepen the color and shift it more towards a red hue.
The mixture of any secondary colour and the primary colour that is not part of it will result in a brown. For example: Add yellow to purple. Add red to green. Add blue to orange. You could also just add blue and red which makes purple but if its dark enough it might be able to produce a brown-ish colour. If its to purple then just add black to it.
by clicking the colour red
When the colours dark red and yellow are mixed together they create the colour burnt orange. The outcome also depends on which colour is added to the other, it is best to add the dark red to the yellow.
You can NOT make red, it is a primary colour.