Rainbow Haki is the rarest cosmetic color you can land in Roblox Sailor Piece, and there's no quest, boss, or story gate standing between you and it. The entire process runs through one item: the Haki Color Reroll. The problem is a flat 1% chance per attempt with no pity system, which means the only variable you control is how many rerolls you have banked before you start.
How does the Rainbow Haki roll actually work?
Every Haki Color Reroll you use randomly assigns a new Haki color from the full pool. The common outcomes are Purple, Yellow, Blue, Brown, Green, and Pink. Rainbow sits well below all of them at roughly 1% per attempt.
There is no streak mechanic, no pity counter, and no bonus that improves your odds after a long dry run. Each roll is independent. That makes the math straightforward: more rerolls equals more chances at that 1% window. Rolling with a small stack is the fastest way to burn through items and end up with nothing to show for it.
Where to farm Haki Color Reroll items
The primary source is combat. Defeating hostile NPCs and bosses throughout the map drops Haki Color Reroll items alongside standard rewards like Wood, cash, and EXP. Low-level enemy groups such as Thief packs are an efficient early target because they respawn quickly and you can clear several at once with area-of-effect skills, building your stack faster than hunting single targets.
Bosses drop rerolls too, and they tend to yield better quantities per kill, though they take longer to defeat and have slower respawn timers. For pure volume, farming Thief packs with AoE abilities is the faster grind.

Rainbow Haki confirmed on screen
For more ways to build out your character while you grind, the Sailor Piece Runes guide covers how to equip runes that boost your damage, luck, and survivability during farming sessions.
What codes give Haki Color Rerolls?
Codes are the fastest shortcut to a large reroll stack. One active code in particular hands out 50x Haki Color Reroll items directly, which is enough to give you a real shot at Rainbow without grinding first.
RAIDUPDATENOW is the only code in the current active list that includes Haki Color Rerolls, so prioritize it. The other codes are worth redeeming for general progression rewards but won't directly help your Rainbow hunt.
How to redeem codes in Sailor Piece
The redemption process takes under a minute:
- Launch Sailor Piece on Roblox and load into any server.
- Click the Setting button in the left-side menu to open the options panel.
- Scroll down to the Codes section.
- Type the code exactly into the text box. Copy-paste it directly to avoid typos.
- Press Redeem. The game confirms the reward, and your Haki Color Reroll items appear in your inventory immediately.
How to roll for Rainbow Haki
Once your reroll stack is ready:
- Open your inventory by clicking the INV button.
- Switch to the Items tab.
- Click the Haki Color Reroll item. Your current count displays on the item icon.
- When the "Reroll your Haki color?" pop-up appears, press Yes.
- Watch the result message at the top center of the screen. It reads "You obtained [color] Haki!"
- Repeat until the message names Rainbow.
Each confirmation spends one reroll and immediately assigns a new color. The counter on the item ticks down with every attempt, so you always know exactly how many rolls remain.

Codes panel in Settings menu
How to confirm the Rainbow Haki unlock
The confirmation is hard to miss. When Rainbow Haki lands, the result message at the top of the screen reads "You obtained Rainbow Haki!" and your Haki visually switches to the rainbow effect. Your reroll count also drops by one, confirming the attempt registered.
If you burn through your entire stack without hitting Rainbow, the process resets to farming. Head back to Thief packs or bosses, rebuild your inventory, redeem any new codes that have dropped, and continue rolling. The 1% chance applies to every new attempt regardless of how many you've already done.
While you're building toward Rainbow Haki, there's plenty of other progression to chase. The Sailor Piece Haki unlock guide walks through Observation, Armament, and Conqueror Haki with exact costs and quest steps, and if you want to push your combat power further, the Spirit Warrior guide covers the full Empyrean Training questline for Sailor Piece's strongest melee spec.
For more Sailor Piece content, the full Roblox guides collection has everything from boss strategies to item farming across the game.


