What is the Bitcoin Rainbow Chart?

The Bitcoin Rainbow Chart plots BTC's spot price against a logarithmic regression curve, with nine colour bands stacked above and below the centreline. Each band represents a sentiment zone, from extreme undervaluation in the deepest blues to peak overvaluation in the brightest reds.

The model fits a logarithmic function to Bitcoin's full price history and projects the curve forward. Bands sit at fixed intervals above and below the regression line, widening with time to reflect compounding uncertainty. The result is a long-term valuation framework for cycle positioning rather than precise buy or sell signals.

Note: The Rainbow Chart is not financial advice. It is a fun visualization tool that provides general context about Bitcoin's historical price movements on a logarithmic scale.

The Nine Rainbow Bands Explained

Each band represents a distinct market regime. From bottom to top:

How to Read the Rainbow Chart

The chart plots BTC price on a logarithmic Y-axis against time. Log scaling matters because Bitcoin has moved across more than five orders of magnitude since 2010, and a linear scale would flatten the early cycles into invisibility. On a log scale, each band covers the same proportional distance from the regression line regardless of absolute price.

Three patterns matter most:

• Band position: Cool blue bands point to accumulation zones, warm red bands to distribution zones.
• Band trajectory: Rapid migration from green to red within months typically signals euphoric phases that resolve in sharp corrections.
• Time spent per zone: BTC spends most of its time in the middle bands. Extended stays in the extreme bands at either end are statistically rare and historically mark turning points.

The chart works best on monthly or weekly timeframes. Intraday price action rarely shifts BTC across bands, and the model is calibrated for cycle-length signals.

Has the Rainbow Chart Been Accurate?

The chart has flagged every major BTC cycle top and bottom since 2013, with varying precision:

• 2013 peak (~$1,150): Reached Maximum Bubble Territory weeks before the top.
• 2015 bottom (~$170): Held Fire Sale and BUY bands for months before reversal.
• 2017 peak (~$20,000): Tagged Sell. Seriously, sell! in December 2017 at the exact peak.
• 2018 bottom (~$3,200): Dropped into BUY band during the December capitulation.
• 2021 peak (~$69,000): Reached FOMO Intensifies but stopped short of Maximum Bubble, an early signal of cycle compression.
• 2022 bottom (~$15,500): Touched BUY band during the FTX collapse, prompting the V2 recalibration published in November 2022.
• 2024 first ATH (~$73,000): Sat in upper-middle bands rather than the deep reds, reflecting Bitcoin's decelerating growth rate.

The trend matters more than any single hit. Each successive cycle has peaked in a relatively lower band than the previous one, consistent with a maturing market. The Rainbow Chart captures this through periodic regression recalibrations, though critics argue the model under-weights recent data and stays too bullish at cycle tops.

Limitations of the Rainbow Chart

The chart is a heuristic, not a forecast. Specific limits include:

• Backward-looking by design: The regression fits past prices and assumes Bitcoin's long-term trajectory continues. Structural breaks in adoption or regulation could invalidate the curve.
• Recalibration changes the signal: When new highs or lows extend the dataset, bands shift. A price that sat in Sell territory under one regression may fall into Is this a bubble? under a recalibrated version.
• No external inputs: The chart ignores ETF flows, macro liquidity, halving cycles, and on-chain data that drive real price action.
• Sentiment labels are arbitrary: Band names are commentary, not derived from underlying market data.
• Cycle compression: BTC's percentage gains have shrunk each cycle, and the upper bands have become harder to reach. Treating Maximum Bubble Territory as a required top signal risks missing tops that occur lower.

History and Origin

The chart has three contributors. BitcoinTalk user Trolololo posted the original logarithmic regression on 22 October 2014, modelling BTC's long-term growth without colour bands. Reddit user azop separately published a straight-line rainbow overlay during the same bear market, capturing market sentiment with humorous zone labels.

Rohmeo of Blockchaincenter combined the two into the modern curved Rainbow Chart in 2019, then published the recalibrated V2 on 21 November 2022 after BTC fell below the V1 lower boundary during the FTX collapse. V2 is now the default and the most widely cited version of the chart.

Frequently Asked Questions

Who created the Bitcoin Rainbow Chart?

The chart is a collaboration. BitcoinTalk user Trolololo built the logarithmic regression model in 2014. Reddit user azop added the rainbow band overlay the same year. Rohmeo at Blockchaincenter merged the two into the modern curved version and published V2 in November 2022.

What formula does the Rainbow Chart use?

V2 uses a logarithmic regression fitted to BTC's full price history since 2010, with bands spaced at fixed intervals above and below the curve. The exact formula has been recalibrated several times. Blockchaincenter publishes both V1 and V2 with full methodology.

Has the Rainbow Chart ever been wrong?

Yes. BTC fell below the V1 lower band during the FTX collapse in late 2022, forcing the V2 recalibration. The 2024 first ATH also reached only the upper-middle bands rather than the deep reds, which would have triggered a sell signal under earlier calibrations.

Is the Rainbow Chart updated in real time?

The BTC price line updates continuously with live spot data. The regression bands themselves recalibrate less frequently, typically when new significant highs or lows extend the dataset enough to reshape the long-term fit.

Does the Rainbow Chart work for other cryptocurrencies?

The same methodology has been applied to Ethereum and other large caps, but shorter price histories and faster structural change weaken the regression fit. BTC remains the cleanest fit thanks to its 15-plus year track record.