by Ron Joseph
April, 2005
RALcolors.com contains a listing of all 213 RAL classic colors. |
What Does "RAL" Color Mean?
Q. What is the full form of RAL - in RAL number and what does it signify?
A. There are two varieties of RAL numbers: The RAL CLASSIC numbers and the
RAL DESIGN numbers, which is a more modern version of the RAL system. The CLASSIC
numbers are just "numbers" in some broad categories. However, the
DESIGN series has a numbering scheme with a scientific significance.
The RAL DESIGN number is made of 3 parts:
H (Hue, an angle between 0 and 360)
L (lightness 0-100)
C (Chroma 0-100)
presented as H L C (with no decimals, i.e.: 240 30 40)
There are 1688 chips or so in the standard RAL DESIGN set.
The HLC values are the SAME as the L*C*h* values determined with Illuminant
D65 AND the 10 degrees (CIE 1964) Observer; they are just presented in a different
order and rounded at fixed intervals corresponding to (about) minimally perceived
color differences.
I hope this answers your question.
Danny Pascale |