identified the colour rendering
index (CRI).
If light sources with colour rendering
index below are used exceptional cases,
it has ensured that safety colours can
be recognised without any problems.
The saturated test colours R14 are
also used occasionally describe special
functions light source.
Colour rendering the ability light
source reproduce surface colours
(8 test colours R8) faithfully as
possible compared reference light
source.
Colour temperature Appearance Association
ww (warm white) 3300 reddish warm
nw (intermediate white) 3300–5300 white neutral
tw (cool white) from 5300 bluish cool
Light
R1 greyish red
Dark
R2 greyish yellow
Strong
R3 yellow green
Moderate
R4 yellowish green
Light
R5 blueish green
R6 Light blue
R7 Light violet
Light
R8 reddish purple
R9 Strong red
R10 Strong yellow
R11 Strong green
R12 Strong blue
Light
R13 yellowish pink
Moderate
R14 olive green (leaf)
Quality characteristics lighting
. The reproduction
of these colours then quoted separately.
Light sources are divided into colour
rendering levels:
Ra very good colour rendering
Ra good colour rendering
Colour rendering less than should not
be selected workplaces.18
The Lighting Handbook
Light colour
Colour rendering
The light colour describes the colour
appearance the light. The best colour rendering is
Ra 100.
In addition the colours the surfaces, also the
light colour that determines room’s basic atmosphere!
Please refer Chapter Technology for light colours of
light sources and changes the light colour
