Red #FF0000
Orange #FF8000
Yellow #FFFF00
Lime #E8F48C
Green 
Dark Green
Cyan
Blue
Dark Blue
Purple
Deep Purple
Magenta
Pink
Black
Gray
White

Burgundy #8A001B

Fauve #E48400

Shamrock Green #009E60

Neon Green #39FF14

1. **Red** (#FF0000): You already have this.
2. **Burgundy** (#8A001B): An excellent choice for a deeper red.
3. **Orange** (#FF8000): You have this one.
4. **Fauve** (#E48400): Adds a unique, earthy orange.
5. **Yellow** (#FFFF00): Essential for the spectrum.
6. **Lime** (#E8F48C): A softer, pastel-like green.
7. **Shamrock Green** (#009E60): A vibrant, mid-tone green.
8. **Green** (#00FF00): A bright, standard green can bridge lime and darker greens.
9. **Neon Green** (#39FF14): Adds vibrancy and is more on the yellow-green side.
10. **Dark Green** (#006400): To represent the deeper greens.
11. **Cyan** (#00FFFF): Sits between green and blue, essential for a complete spectrum.
12. **Blue** (#0000FF): The primary color for the cooler side of the spectrum.
13. **Dark Blue** (#00008B): To cover deeper shades of blue.
14. **Purple** (#800080): A perfect mid-point between blue and red.
15. **Deep Purple** (#673AB7): Adds depth to the purple range.
16. **Magenta** (#FF00FF): Sits at the edge of the red and blue spectrum.
17. **Pink** (#FFC0CB): Adds a soft, lighter option within the reds and purples.
18. **Black** (#000000), **Gray** (#808080), and **White** (#FFFFFF): Essential neutrals.