UFC 3 -520-01
June 10, 2002
Table F -2. Appropriate Color Rendering Indices
Color
Rendering
Typical Sources
Appearance
Applications
Index
0 40
High pressure sodium
Colors are severely
Warehousing and other
and low pressure
distorted, some colors
gross tasks. Refer to
sodium
not even visible.
paragraph F -6.6
regarding high-
pressure sodium
lamps.
40 50
Mercury vapor
Colors are distorted,
Warehousing and other
some hardly visible.
gross tasks. Refer to
paragraph F -6.4
regarding mercury
vapor lamps.
50 65
Traditional fluorescent
Colors are distorted,
Some work areas.
lamps like "cool white",
generally with a distinct
"lite white", "warm
tint. For example, cool
white", "white" and
white has a green tint
"daylight".
and warm white has an
orange tint.
65 80
Fluorescent T-8 lamps
Colors are slightly
General lighting in
Metal halide lamps
distorted, but
most applicatio ns.
reasonable distinction
is possible and lighting
appears fairly natural.
80 90
Fluorescent lamps
Colors are fairly natural
Where color distinction
Compact fluorescent
in appearance, and
and/or discrimination
lamps
color distinction is very
are important, such as
Certain metal halide
good.
health care treatment
lamps
and retail sales.
90 100
Incandescent and
Colors are almost
Where color distinction
halogen lamps
perfectly natural in
and/or discrimination
Certain fluorescent
appearance, and color
are important, such as
lamps
distinction and
technical color
discrimination are
evaluation, graphic
excellent.
arts, and museums.
F-4.4
Glare Control.
F-4.4.1 There are two principal types of glare--discomfort glare and disability glare.
Both types can be minimized or eliminated through proper design practices, including
the use of luminaires with appropriate characteristics, proper source location, and other
means.
F-6
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