| Palette | Licence | Source |
|---|---|---|
| 1-bit black and white | Original, generated; no third-party licence | Formula: 2 evenly spaced gray levels (palettes.js) |
| Grayscale 4 steps | Original, generated; no third-party licence | Formula: 4 evenly spaced gray levels (palettes.js) |
| Grayscale 8 steps | Original, generated; no third-party licence | Formula: 8 evenly spaced gray levels (palettes.js) |
| Grayscale 16 steps | Original, generated; no third-party licence | Formula: 16 evenly spaced gray levels (palettes.js) |
| Green ramp 4 steps | Original, generated; no third-party licence | Formula: linear blend of two dark and light greens chosen by us (palettes.js) |
| RGB cube 2 levels (8 colours) | Original, generated; no third-party licence | Formula: 2 evenly spaced levels per channel (palettes.js) |
| RGB cube 3 levels (27 colours) | Original, generated; no third-party licence | Formula: 3 evenly spaced levels per channel (palettes.js) |
| RGB cube 4 levels (64 colours) | Original, generated; no third-party licence | Formula: 4 evenly spaced levels per channel (palettes.js) |
| Hue ramp 12 colours | Original, generated; no third-party licence | Formula: 12 evenly spaced hues at 70% saturation and 50% lightness (palettes.js) |
| Hue ramp 12 hues x 3 lightness + 4 grays | Original, generated; no third-party licence | Formula: 12 hues at 70% saturation, lightness 30%, 50% and 70%, plus 4 gray levels (palettes.js) |
Palettes you paste into the custom text box stay in your browser and are your own responsibility.