East Anglia spinout Spectral Edge is working on technology to help colour-blind people better recognise individual colours.

Spectral Edge, a colour blindness technology spinout from East Anglia University, has raised £1.5m ($2.1m) from a consortium including investment firm Parkwalk Advisors.

IQ Capital, Wren Capital, Cambridge Capital Group, Midven’s Rainbow Seed Fund, Iceni and angel investors from Cambridge Angels also took part in the round.

Spectral Edge spun out from East Anglia University’s Colour Lab in 2011. The company uses additional image data, such as an infrared picture, to help people affected by colour blindness differentiate more colours when watching live TV and video.

The company plans to use the funding to hire more staff, invest in sales and marketing and develop its products.

In 2014, Spectral Edge raised £300,000 from Midven’s Rainbow Seed Fund and the Iceni Seedcorn Fund.