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.
Colours
Standard Deviation Candles (With Emoji)In crypto, significant price moves can be a sign of continuation or reversal. This script measures if price move is greater than a certain number of standard deviations vs. previous periods, then alters bar colours and/or prints an emoji signal.
Moving average Two ColoursExponential moving average of 200 periods, which changes color according to the position of the candles.
(200 periods: default configuration Option to change periods allowed)
If the candles are on the EMA, this will have green color, otherwise red color (colors, thickness configurable).
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Descripción en Español:
Media móvil Exponencial de 200 periodos, la cuál cambia de color según posición de las velas.
(200 periodos: configuración default. Opción de cambio de periodos permitida)
Si las velas están sobre la EMA , esta tendrá color verde, caso contrario color rojo (colores, grosor configurables).
TRIX ribbon w/ Up/Down colours - squattter
Follow the momentum - 2/4/8hr or Daily, take your pick. Use 2 or more TFs together for greater chance of a winning trade.
Also brilliant for spotting divergence.
This one is my favorite indicator.
Stochastic CCI MTF w/ UP/DOWN colours - squattterStoch CCI has a nicer divergence than Stoch RSI.
Enjoy!
Fisher Transform with Up/Down colours - squattter - V2Colours change faster now using the white line as reference rather than the bars.
