Information about the Chromatic Orb spell in Dungeons and Dragons 5th Edition is not freely available. It can be found on page 221 of the Player's Handbook.
Casting Time: 1 action
Range: 90 feet
Components: V, S, M (a diamond worth at least 50 gp)
You hurl a 4-inch-diameter sphere of energy at a creature that you can see within range. You choose acid, cold, fire, lightning, poison, or thunder for the type of orb you create, and then make a ranged spell attack against the target. If the attack hits, the creature takes 3d8 damage o f the type you chose.
At Higher Levels: When you cast this spell using a spell slot o f 2nd level or higher, the damage increases by 1d8 for each slot level above 1st.