Aurora (aurora-fbm)

Drifting ribbons of light.

{
  "$schema": "https://aurora.goatsoft.io/schema/v1.json",
  "format": "aurora",
  "version": 1,
  "name": "Aurora starter",
  "palette": [
    "oklch(0.68 0.16 245)",
    "oklch(0.56 0.22 285)",
    "oklch(0.58 0.25 310)"
  ],
  "layers": [
    {
      "type": "aurora-fbm"
    }
  ]
}

This is presets/starters/aurora-fbm.aurora: the generator alone, with its defaults.

Colours

A layer’s colors picks 3 palette colours, in the order below. To recolour part of the background, change the palette colour in that position.

PositionPaintsDefault
0Ribbons, first colouroklch(0.68 0.16 245)
1Ribbons, second colouroklch(0.56 0.22 285)
2Ribbon highlights, and the right-hand end of sweepoklch(0.58 0.25 310)

Parameters

Every parameter is optional; one you leave out uses its default.

NameLabelDefaultRangeWhat it does
intensityIntensity10 to 2How strongly the ribbons show. Above 1 the brightest parts saturate.
scaleScale1.60.1 to 5Higher gives smaller, busier ribbons; lower gives broader ones.
speedSpeed0.060 to 1How fast the field drifts.
seedSeed00 to 100Offsets the field so neighbours look different.
stretchStretch0.550.05 to 3Lower gives longer, wispier ribbons; higher gives shorter ones.
sweepSweep00 to 1Blend toward a left-to-right gradient from the first to the last colour.