Color Functions

color.new(color: string, transparency?: number): string

var semiTransparent = color.new("red", 50);
var opaqueBlue = color.new("#0000FF", 0);
var lightGreen = color.new("green", 80);

color.rgb(red: number, green: number, blue: number, transparency?: number): string

var customRed = color.rgb(255, 0, 0);
var customPurple = color.rgb(128, 0, 128);
var transparentBlue = color.rgb(0, 0, 255, 50);

color.from_gradient(value: number, min: number, max: number, colorMin: string, colorMax: string): string

//@version=2

define(title="RSI Gradient", position="offchart", axis=true);

timeseries ohlcvData = ohlcv(symbol=currentSymbol, exchange=currentExchange);
var rsiValue = rsi(source=ohlcvData.close, period=14);

// Create gradient color from green (low RSI) to red (high RSI)
var rsiColor = color.from_gradient(rsiValue, 0, 100, "green", "red");

plotLine(value=rsiValue, width=2, colors=[rsiColor], label=["RSI"], desc=["RSI with gradient color"]);

//@version=2

define(title="Trend Colors", position="onchart", axis=false);

timeseries ohlcvData = ohlcv(symbol=currentSymbol, exchange=currentExchange);

var ema20 = ema(source=ohlcvData.close, period=20);
var isUptrend = ohlcvData.close > ema20;

// Use different colors based on trend
var trendColor = isUptrend ? color.new("green", 0) : color.new("red", 0);

plotLine(value=ema20, width=2, colors=[trendColor], label=["EMA"], desc=["Trend EMA"]);

//@version=2

define(title="RSI Zones", position="offchart", axis=true);

timeseries ohlcvData = ohlcv(symbol=currentSymbol, exchange=currentExchange);
var rsiValue = rsi(source=ohlcvData.close, period=14);

// Color based on RSI zones
var rsiColor = rsiValue > 70 ? color.new("red", 0) :
               rsiValue < 30 ? color.new("green", 0) :
               color.new("blue", 0);

plotLine(value=rsiValue, width=2, colors=[rsiColor], label=["RSI"], desc=["Zone-colored RSI"]);

//@version=2

define(title="Transparent Bands", position="onchart", axis=false);

timeseries ohlcvData = ohlcv(symbol=currentSymbol, exchange=currentExchange);

var smaValue = sma(source=ohlcvData.close, period=20);
var upperBand = smaValue * 1.02;
var lowerBand = smaValue * 0.98;

// Use transparent colors for bands
var bandColor = color.new("blue", 80);

plotLine(value=upperBand, width=1, colors=[bandColor], label=["Upper"], desc=["Upper Band"]);
plotLine(value=smaValue, width=2, colors=["blue"], label=["SMA"], desc=["Middle"]);
plotLine(value=lowerBand, width=1, colors=[bandColor], label=["Lower"], desc=["Lower Band"]);