Pokemon Series – How the Hit Point Bar Color is Calculated

As of 2016, it is possible to trade from the Virtual Console editions of Pokémon Red, Blue, Green and Yellow to the new Pokémon Sun/Moon (Gen 7) via Pokémon Bank.

Unfortunately while Gen 6 (X/Y/OR/AS) is compatible with Pokémon Bank, it is not possible to receive Gen 1 Pokémon in those games.

However, if we're talking about the original Gameboy cartridges, it can't be done. The limits on trading are as follows:

Generation 1 (Red/Blue/Green/Yellow)
↑↓ Both directions
Generation 2 (Gold/Silver/Crystal)
X Trade impossible
Generation 3 (Ruby/Sapphire/Emerald/FireRed/LeafGreen)
↓ One-way only, allows held items
Generation 4 (Diamond/Pearl/Platinum/HeartGold/SoulSilver)
↓ One-way only, no items
Generation 5 (Black/White/Black 2/White 2)
↓ One-way only, no items
Generation 6 (X/Y/Omega Ruby/Alpha Sapphire)
↓? (Unreleased, backwards trading yet to be confirmed, Pokémon Bank currently forbids items)
Generation 7 (Sun/Moon)

There are three main reasons you can't trade between Gen I/II and Gen III:

1. The Pokémon data format changed significantly in Gen III, so the two were incompatible.
2. The GBA link cable uses a different voltage to the Gameboy link cable. Even though a GBA can play old Gameboy games, it uses different circuitry than when playing GBA games, so the games' link cable functionalities are fundamentally incompatible.
3. Even if these weren't an issue, Nintendo never released a product that allowed trade from one to the next.

The attack has a base power of 95, but instead of using the user's Attack stat to calculate damage, it uses the opponent's Attack stat. (Source)