Better Contrast (NTSC Optimized)Library Better Contrast (NTSC Optimized)
This lightweight utility library automatically selects the optimal text color (black or white) for any given background color, ensuring maximum readability for labels, tables, and UI elements.
Unlike standard libraries that use the HSP model or simple averaging, this library utilizes the NTSC Perceived Brightness formula.
🟢 Why NTSC?
The human eye is significantly more sensitive to green light than red or blue. Standard formulas often miscalculate brightness for high‑energy colors like yellow (red + green) or cyan, resulting in white text on bright yellow backgrounds — which is hard to read.
The NTSC formula weights colors based on human perception:
Brightness = (Red * 0.299) + (Green * 0.587) + (Blue * 0.114)
By heavily weighting the green channel (58.7%), this method correctly identifies yellow and cyan as “bright” backgrounds, forcing the text to black for superior contrast.
🛠 Usage
Import the library:
import Robertsanktov/Better_Contrast/1 as contrast
Use the method directly on any color variable:
textColor = myBackgroundColor.contrast()
Parameters
- threshold : (optional) brightness cutoff (0.0–1.0 or 0–255). Default is 0.55 .
Higher values force more white text; lower values force more black text.
Contrast
Contrast Color LibraryThis lightweight library provides a utility method that analyzes any provided background color and automatically chooses the optimal black or white foreground color to ensure maximum visual contrast and readability.
🟠 Algorithm
The library utilizes the HSP Color Model to calculate the brightness of the background color. The formula for this calculation is as follows:
brightness = sqrt(0.299 * R^2 + 0.587 * G^2 + 0.114 * B^2 )
The library chooses black as the foreground color if the brightness exceeds the threshold (default 0.5), and white otherwise.
Regression Channel Alternative MTF V2█ OVERVIEW
This indicator is a predecessor to Regression Channel Alternative MTF , which is coded based on latest update of type, object and method.
█ IMPORTANT NOTES
This indicator is NOT true Multi Timeframe (MTF) but considered as Alternative MTF which calculate 100 bars for Primary MTF, can be refer from provided line helper.
The timeframe scenarios are defined based on Position, Swing and Intraday Trader.
Suppported Timeframe : W, D, 60, 15, 5 and 1.
Channel drawn based on regression calculation.
Angle channel is NOT supported.
█ INSPIRATIONS
These timeframe scenarios are defined based on Harmonic Trading : Volume Three written by Scott M Carney.
By applying channel on each timeframe, MW or ABCD patterns can be easily identified manually.
This can also be applied on other chart patterns.
█ CREDITS
Scott M Carney, Harmonic Trading : Volume Three (Reaction vs. Reversal)
█ TIMEFRAME EXPLAINED
Higher / Distal : The (next) longer or larger comparative timeframe after primary pattern has been identified.
Primary / Clear : Timeframe that possess the clearest pattern structure.
Lower / Proximate : The (next) shorter timeframe after primary pattern has been identified.
Lowest : Check primary timeframe as main reference.
█ FEATURES
Color is determined by trend or timeframe.
Some color is depends on chart contrast color.
Color is determined by trend or timeframe.
█ EXAMPLE OF USAGE / EXPLAINATION
