Hook — colours report a comparison, not tomorrow's return

A beginner opens a chart, notices a bright green candle after several red ones, and concludes that the market is now safe. That conclusion does not follow from the evidence. In the ordinary candlestick convention, green simply means the selected close is higher than the selected open within the same interval. It does not establish what happened before the interval began, why the price moved, or what the next period will do. A red candle likewise means close below open, not that every holder lost money. Different software can reverse colours or use hollow and filled candles, so a legend and the numerical open and close matter more than the paint. A candle may still be forming, which means its colour and endpoints can change. Our task is to read measurements accurately, never to treat a colour as permission to take financial risk.

Concept in depth — three comparisons beginners often mix

The first comparison is a candle's close with its own open. With the common green-up convention, close above open makes a positive body, and close below open makes a negative one. If the two are equal, the real body is flat or very small; chart software may label or colour that differently. The second comparison is the current close against the previous interval's close. A gap at the new opening can make these directions disagree. Suppose yesterday ended at ₹110, today opened at ₹100 and finished at ₹103. Today's body rises ₹3, but today's close remains ₹7 below yesterday's close. The third comparison is the high-to-low range, which includes more prices than the opening and closing endpoints. A wide range and tiny body can occur together. No one should confuse these three measurements with realized personal profit. A profit calculation needs actual transaction quantities, sides, fees and fills, which OHLC data alone cannot supply.

Concept 1

Green close. A candle is generally green when its close is above its open, describing the completed interval, not a future gain. Desi example: a mandi tomato crate costs more at evening close than morning open. Worked hypothetical: open ₹100, close ₹104; 104−100=₹4 increase. Reference A · Reference B.

Concept 2

Red close. A candle is generally red when close is below open; it does not reveal every trade in between. Desi example: a kirana shop's sack quote ends below its morning quote. Worked hypothetical: open ₹104, close ₹99; 99−104=−₹5. Reference A · Reference B.

Concept 3

Colours do not forecast. Chart software can reverse colour choices; compare open/close and legend, not a superstition about the next bar. Desi example: truck freight rises Monday, falls Tuesday, Wednesday remains unknown. Worked hypothetical: closes 100→103→101 mean +3 then −2, net +1, not a prediction. Reference A · Reference B.

How it works — a clear four-number reading routine

First identify the instrument, currency denomination, time interval, provider and chart type. Write ordinary OHLC numbers as separate values: open, high, low, close. Check that high is no smaller than either open or close and low is no greater than those two endpoints. Subtract open from close, retaining the sign: positive for an upward body, negative for a downward body and zero for a flat one. Separately subtract low from high to measure the entire range. If you need the body length rather than its direction, use the absolute value of close minus open. Then compare close with the previous bar's close only if that earlier value is available. Verify that the current interval has finished; while it is still forming, the latest observed close and colour are provisional. Finally examine the palette and data feed to see whether prices refer to last trades, bid, ask or an indicative reference. This process describes the picture and does not produce a trading recommendation.

Desi example — a mandi clerk paints a daily price board

Picture a fictional onion merchant who writes each morning's first quoted crate price and the evening's last quoted price. On Monday the crate opens at ₹100 and ends at ₹104, so the merchant chooses green for that day's row. On Tuesday the first quote is ₹104 and the last is ₹99, so the row is red. Those colours describe movement within each chosen daily record. They do not say how many crates actually sold, which negotiated discounts customers received, what inventory cost, or whether anyone earned a net profit. Another merchant could paint rising rows blue and falling rows orange without changing the facts. Now suppose yesterday ended at ₹110 and the following morning starts at ₹100, ending at ₹103. A green row would still be below the preceding day's final price. The lesson from the shop's familiar board is simple: always ask, 'Higher than which reference point?' before repeating a statement about prices.

ILLUSTRATIVE ONLY — green, red and an overnight gap

Take fictional candle A with O=₹100, H=₹108, L=₹97, C=₹104. Its signed open-to-close change is ₹104−₹100=+₹4, its body length is ₹4 and its entire high-low range is ₹108−₹97=₹11. With a green-up palette, A is green. Fictional candle B has O=₹104, H=₹106, L=₹98, C=₹99. Its signed body change is ₹99−₹104=−₹5 while its range is ₹106−₹98=₹8, so it is red under the same settings. For a separate gap exercise, take previous close ₹110, next open ₹100 and next close ₹103. The new body changes by +₹3 but next-close-versus-previous-close changes by −₹7. These are different calculations and not contradictory. In an independent dollar classroom example, a quote from $21 to $23 changes by $2; it does not imply any exchange rate with rupees. Every amount is invented and excludes execution fees unless explicitly stated.

Common Mistakes — mistaking green for guaranteed profit

One mistake is saying 'green means everyone made money'. A chart bar contains neither an individual's position nor a receipt. Another is saying that every red candle ends below the previous candle's close; a gap can reverse that relationship. Some learners forget that software colours can be configured, treating a chart palette as a universal law. Others call a candle final even though its interval has not yet closed, so the displayed colour could still change. A long wick cannot reveal the entire sequence of trades inside the period, and an indicative midpoint is not necessarily an executable quote for a customer. A candle's high is not proof that every participant could sell there. A short-term green body also does not settle the direction of a longer timeframe. The safe interpretation remains limited to the measurements actually supplied. Avoid attaching unsupported certainty or income claims to the shape.

Real-world-style scenario — a misleading green screenshot

An imaginary community chat circulates a screenshot showing a luminous green five-minute bar. The caption claims 'reversal confirmed' and promises that anyone following it would make a profit. But the screenshot cuts off the instrument's name, its time axis and the previous closing rate. Even with genuine OHLC figures, a positive five-minute body would only describe that small interval. Its next candle could rise, fall or remain near the same price. The image does not prove that compatible bid or ask orders existed at its extremities, that anybody placed an order, or that a specific transaction was profitable. A careful student checks whether the bar had finished, verifies its price source and records what is missing as NEEDS-REVIEW. This is a fictional example of evidence discipline, not a claim about any real person. Good chart commentary reports measured facts without converting a coloured shape into a forecast.

Summary and recap — colour is shorthand for the finished interval

In a common chart palette, green is a close above its own open, red is a close below its own open, and equal endpoints make a flat body. The palette can be changed by the user. Open-to-close body change, high-low range and close-to-previous-close difference answer different questions; a price gap can make their directions disagree. An unfinished candle may change colour before its endpoint is settled. Chart colour does not establish personal returns, future direction or guaranteed fills. Useful reading requires the instrument name, complete time interval, quotation source, all four OHLC values and any previous close used for comparison. The imaginary ₹100-to-₹104 example is mathematical education only. In every discussion, describe what the screen directly shows and clearly separate what remains unknown.