rgbToHex

Function Signature

rgbToHex(r: number, g: number, b: number): string

Parameters

• r (number): Red channel value. Values are rounded and clamped to 0-255.
• g (number): Green channel value. Values are rounded and clamped to 0-255.
• b (number): Blue channel value. Values are rounded and clamped to 0-255.

Return Value

A lowercase HEX color string in the format #rrggbb.

rgbToHex(255, 102, 0);
// "#ff6600"

rgbToHex(-1, 170.4, 300);
// "#00aaff"

Examples

console.log(rgbToHex(255, 255, 255));
// "#ffffff"

console.log(rgbToHex(0, 0, 0));
// "#000000"

console.log(rgbToHex(34, 139, 34));
// "#228b22"

Error Handling

The function does not throw for out-of-range channel values. Numeric inputs are rounded and clamped before conversion.

Usage Notes

• Always returns lowercase HEX values.
• Does not output shorthand HEX; it always returns the full 6-character format.
• Commonly paired with hexToRgb for round-trip conversions.