Synopsis

cvcolor [colorname...] ['redvalue greenvalue bluevalue'...]

Options

   -h              print this help and exit
   -H, --help      print full documentation and exit
   -V, --version   print version and exit

Description

An unknown color name is matched against the color database and the any matches are reported.

With no arguments, cvcolor will accept one color name or 3 numerical rgb values per line. The rgb values must either be in the range 0..1 or in the range ..255. cvcolor responds with the corresponding (nearest) color name and the rgb, hsv, and cmyk values.

Colors are taken from /etc/X11/rgb.txt, but colors with spaces in their names are skipped (they have capitalized duplicates without spaces).

Examples

  $ cvcolor DarkOliveGreen OliveDrab '.1 .2 .3' '25 50 75'
  DarkOliveGreen
         ________0-1____________    ___0-255___    __00-ff__
  RGB:   0.333 0.420 0.184           85 107  47      556b2f
  HSV:      82 0.561 0.420
  CMYK:  0.086 0.000 0.235 0.580
  
  OliveDrab
         ________0-1____________    ___0-255___    __00-ff__
  RGB:   0.420 0.557 0.137          107 142  35      6b8e23
  HSV:      79 0.754 0.557
  CMYK:  0.137 0.000 0.420 0.443
  
  nearest color: DarkSlateGray
  distance:      1.93%
         ________0-1____________    ___0-255___    __00-ff__
  RGB:   0.100 0.200 0.300           26  51  77      1a334d
  HSV:     210 0.667 0.300
  CMYK:  0.200 0.100 0.000 0.700
  
  nearest color: gray20
  distance:      1.93%
         ________0-1____________    ___0-255___    __00-ff__
  RGB:   0.098 0.196 0.294           25  50  75      19324b
  HSV:     210 0.667 0.294
  CMYK:  0.196 0.098 0.000 0.706
  
  $ cvcolor drab
  unknown color
  I know about OliveDrab OliveDrab1 OliveDrab2 OliveDrab3 OliveDrab4
  
  $ cvcolor darkolivegreen
  Database: DarkOliveGreen
         ________0-1____________    ___0-255___    __00-ff__
  RGB:   0.333 0.420 0.184           85 107  47      556b2f
  HSV:      82 0.561 0.420
  CMYK:  0.086 0.000 0.235 0.580
  
  $ cvcolor Blue
  Database: blue
         ________0-1____________    ___0-255___    __00-ff__
  RGB:   0.541 0.169 0.886          138  43 226      8a2be2
  HSV:     271 0.810 0.886
  CMYK:  0.345 0.718 0.000 0.114
  
  $ cvcolor '.1 .2. .3'
  nearest color: DarkSlateGray
  distance:      1.93%
         ________0-1____________    ___0-255___    __00-ff__
  RGB:   0.100 0.200 0.300           26  51  77      1a334d
  HSV:     210 0.667 0.300
  CMYK:  0.200 0.100 0.000 0.700
  
  $ cvcolor '25.5 51 76.5'
  nearest color: DarkSlateGray
  distance:      1.93%
         ________0-1____________    ___0-255___    __00-ff__
  RGB:   0.100 0.200 0.300           26  51  77      1a334d
  HSV:     210 0.667 0.300
  CMYK:  0.200 0.100 0.000 0.700

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