UNPKG
chroma-js
Version:
latest (3.2.0)
3.2.0
3.1.4
3.1.2
3.1.1
3.1.0
3.0.0
3.0.0-0
2.6.1-0
2.6.0
2.5.0
2.5.0-4
2.5.0-3
2.5.0-2
2.5.0-1
2.5.0-0
2.4.2
2.4.1
2.4.0
2.3.0
2.2.0
2.1.2
2.1.1
2.1.0
2.0.6
2.0.5
2.0.4
2.0.3
2.0.2
2.0.1
2.0.0
1.4.1
1.4.0
1.3.7
1.3.6
1.3.5
1.3.4
1.3.3
1.3.2
1.3.1
1.3.0
1.2.2
1.2.1
1.1.1
1.1.0
1.0.1
0.7.8
0.7.6
0.7.5
0.7.4
0.7.3
0.7.2
0.7.1
0.6.3
0.6.2
0.6.1
0.6.0
0.5.9
0.5.8
0.5.7
0.5.6
0.5.5
0.5.4
0.5.2
0.5.1
0.4.11
0.4.10
0.4.8
0.4.7
0.4.3
0.2.5
JavaScript library for color conversions
github.com/gka/chroma.js
gka/chroma.js
chroma-js
/
src
/
converter
/
out
/
rgb2cmyk.coffee
13 lines
(11 loc)
•
258 B
text/coffeescript
View Raw
1
2
3
4
5
6
7
8
9
10
11
12
13
rgb2cmyk = (mode=
'rgb'
) -> [r,g,b] = unpack
arguments
r
=
r /
255
g = g /
255
b = b /
255
k =
1
- Math.max(r,Math.max(g,b)) f =
if
k <
1
then
1
/ (
1
-k)
else
0
c = (
1
-r-k) *
f
m
=
(
1
-g-k) *
f
y
=
(
1
-b-k) * f [c,m,y,k]