What it shows
A baseline chart plots one price series against a horizontal reference level and colors the areas above and below that level differently, typically green above and red below. It answers one question instantly: is price above or below the level that matters to you, such as a prior close, breakeven or a round number. The line and fills flip color as price crosses the base level.
How it's built
A single price point per fixed time interval is plotted as a line; the base level is a horizontal line placed either at a percentage of the visible range or at a fixed price. The region between the series and the base level is filled with the above-color or below-color depending on which side price is on.
Switch to it
Open the chart-type menu in the header (next to the interval buttons) and pick Baseline — or pin it as a favourite for one-click switching.
When to use it
- Tracking performance versus a reference such as previous close, entry price or a yearly open
- Session dashboards showing at a glance whether symbols are up or down on the day
- Mean-reversion views where crossings of a central level are the signal
Settings reference
Open Chart Settings (gear, or double-click the chart background) with this type active. Every setting, its possible values and what it changes:
| Setting | Control | Possible values | Default | Effect |
|---|---|---|---|---|
| Price source | select | Close, Open, High, Low, HL2, HLC3, OHLC4 | Close | Which price of each bar the baseline series plots. HL2/HLC3/OHLC4 are averaged bar prices for a smoother line. |
| Top line | color | any color | #089981 | Color of the line segments drawn where price is above the baseline level. |
| Top line width | slider | 1 to 4 | 2 | Thickness of the above-baseline line segments in pixels. |
| Top line style | select | Solid, Dashed, Dotted | Solid | Dash pattern of the above-baseline line segments. |
| Bottom line | color | any color | #F23645 | Color of the line segments drawn where price is below the baseline level. |
| Bottom line width | slider | 1 to 4 | 2 | Thickness of the below-baseline line segments in pixels. |
| Bottom line style | select | Solid, Dashed, Dotted | Solid | Dash pattern of the below-baseline line segments. |
| Baseline | color | any color | #8C8C8C | Color of the horizontal base-level line itself, drawn across the pane at the configured base level. |
| Fill top area | two-colors | any color (near line / near baseline) | #08998180 / #08998110 | Gradient fill of the region above the baseline: the first color sits at the price line and fades to the second at the baseline. Defaults are the up color at 50% and 6% opacity. |
| Fill bottom area | two-colors | any color (near line / near baseline) | #F2364580 / #F2364510 | Gradient fill of the region below the baseline: the first color sits at the price line and fades to the second at the baseline. Defaults are the down color at 50% and 6% opacity. |
| Base level | number | 0 to 100 (%, step 1) | 50 | Vertical position of the baseline as a percentage of the pane height (0 = bottom, 100 = top). Moving it shifts where the chart switches between the top and bottom coloring. |
| Precision | select | Default, 0 (1), 1 (1.1), 2 (1.01), 3 (1.001), 4 (1.0001), 5 (1.00001), 6 (1.000001), 7 (1.0000001), 8 (1.00000001) | Default | Number of decimal places shown on the price scale and price readouts. Default derives the precision from the symbol's own price scale. |
Watch out for
- With a percentage-based base level, the reference moves as the visible price range changes, so the coloring can shift when you scroll or zoom