Permacolor
Rosco Permacolor
Dichroic glass colour filters that deliver intense, precisely repeatable colour — and hold it, under heat, for the life of the installation. Over 60 colours, real correction filters, sizes to 343 mm. Colour as a permanent material, not a consumable.
Colour made of glass
Permacolor is dichroic glass: colour created by microscopically thin coatings that reflect the wavelengths you don't want rather than absorbing them. Because the unwanted light is reflected away, the filter stays cooler and the colour stays saturated — and, crucially, it doesn't fade.
That makes it the right tool wherever colour has to be permanent and consistent: a specified hue reads the same across every fixture, and the same in five years as on opening night. It is the difference between colour you install once and colour someone has to keep replacing.
Over 60 colours, plus correction
A defined range of saturated colours through to precise technical filters — all in the same durable dichroic glass.
Saturated colours
Deep reds, blues, greens, ambers, magentas and more — high-transmission, fully saturated hues that hold true.
Cinedichro correction
Glass CTO, CTB and Plus/Minus Green for colour-temperature correction that survives fixture heat.
Technical & diffusion
UV/IR control, blockers, retail enhancement and White Diffusion glass to pair with colour.
Why the colour lasts
Dichroic, not absorptive
Thin-film coatings reflect unwanted wavelengths — so colour stays saturated and the glass stays cool and stable.
Stable & repeatable
A specified hue reads consistently across fixtures and holds true over years, unlike gels that drift and fade.
Saturation & correction
Deep saturated colours through to precise colour-temperature correction — a permanent-grade palette.
The hard numbers
Rosco's published figures. Minimum quantities and lead times for custom colours are confirmed at specification. Note dichroic colour can shift slightly at wide beam angles.
Dichroic (TiO₂ / SiO₂) coating on borosilicate glass
60+ standard colours plus correction & technical filters
Round 20–343 mm · square 10–242 mm; ±0.5 mm cut
~50, 133, 160, 209, 343 mm round
1.1, 1.75 or 3.3 mm
Held to ±5 nm of the design curve
Substrate to ~450 °C short-term; coating to ~200 °C continuous
10+ years under normal conditions
Saturated colours to ~96%
Custom colours, sizes & shapes to order
Frames & mounting
Frames
- Permacolor frame + safety grid
- 6.25″ (fits 133 mm)
- 7.5″ (fits 160 mm)
- 10″ (fits 209 mm)
- Custom sizes
Pairs with
- White Diffusion glass (P3026)
- Correction filters
- Custom glass gobos
Colour on a 90-ft ring
Montreal's L'Anneau uses custom Permacolor dichroic filters — amber, pink and Mediterranean blue — with custom glass gobos, lighting only the ring's inner contour.
A permanent public artwork where the colour has to look immaculate every night, for years: exactly the duty dichroic glass is built for.
See the colour on your fixture
Dichroic colour looks different in the hand than in a swatch — and can shift with beam angle. We can supply Permacolor glass samples so you can see the exact hue through your own fixture, on your own surface, before you specify.
We put the glass in your hands to trial; we don't run the tests on your fixtures for you. Once the colour reads right, we confirm the size and holder and supply it in Australia.
Need colour that stays true?
You have the palette, the sizes and the performance. Tell us the hue and the fixtures, and we'll confirm the Permacolor spec and supply it in Australia.