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.
Brightness
Volume (standard) + Brightness by Intensity (Min–Max / MA)Volume Brightness Indicator
Quick Description
This indicator is an enhanced version of TradingView’s standard volume. The volume bars are colored just like the original (green/red or a single custom color), but with one key upgrade: brightness and transparency adjust automatically based on volume intensity.
High volume → bars appear more opaque and bright.
Low volume → bars appear more transparent and faded.
This makes it easier to spot which candles actually carry meaningful volume at a glance.
Features
Bar colors: by candle direction (green/red) or a single chosen color.
Volume moving average: optional, customizable (SMA or EMA).
Brightness methods:
Min–Max: compares volume against a historical window (with optional log scale).
MA-based: compares volume against its moving average, with an adjustable cap.
Custom transparency: define how opaque high-volume and low-volume bars appear.
How to Use
Copy the script into Pine Editor and save it.
Add it to your chart; it will display in its own panel, like the standard volume.
In Settings, choose your preferred brightness method and adjust transparency ranges.
Toggle the volume MA if you want a clear reference line.
Key Idea
The indicator does not add new data. It highlights volume intensity visually, making it easier to identify accumulation or spikes without losing the simplicity of the classic volume.
