Golf ball

Abstract

An object of the present invention is to provide a golf ball having high visibility and little uncomfortableness at shot. The present invention provides a golf ball comprising a core and a cover disposed outside of the core, wherein a surface of the golf ball has a first region with a first color and a second region with a second color, the first color has hue H1 represented by H value in HSL color space, the second color has hue H2 represented by H value in HSL color space, and the H1 and the H2 satisfy a specific mathematical formula.

1 . A golf ball comprising a core and a cover disposed outside of the core, wherein
 a surface of the golf ball has a first region with a first color and a second region with a second color,   the first color has hue H1 represented by H value in HSL color space,   the second color has hue H2 represented by H value in HSL color space, and   the H1 and the H2 satisfy the following mathematical formula (1) or mathematical formula (2):
   0≤| H 1− H 2|≤60  (1)
 
   300≤| H 1− H 2|≤360  (2).
 
   
     
     
         2 . The golf ball according to  claim 1 , wherein the golf ball further comprises at least one intermediate layer between the core and the cover, an outermost layer of the intermediate layer has hue H0 represented by H value in HSL color space, and either one of |H0−H1| and |H0−H2| is less than 10, and the other one of |H0−H1| and |H0−H2| is 10 or more. 
     
     
         3 . The golf ball according to  claim 1 , wherein the first color of the first region has saturation S1 represented by S value in HSL color space, the first color of the first region has lightness L1 represented by L value in HSL color space, and the S1 is 40 or more and 100 or less, and the L1 is 30 or more and 100 or less. 
     
     
         4 . The golf ball according to  claim 1 , wherein the second color of the second region has saturation S2 represented by S value in HSL color space, the second color of the second region has lightness L2 represented by L value in HSL color space, and the S2 is 40 or more and 100 or less, and the L2 is 30 or more and 100 or less. 
     
     
         5 . The golf ball according to  claim 1 , wherein the first region and the second region are each a region surrounded by two boundary lines connecting a first pole and a second pole of the golf ball surface wherein the region continues from the first pole to the second pole. 
     
     
         6 . The golf ball according to  claim 1 , wherein the first region and the second region are each hemispherical. 
     
     
         7 . The golf ball according to  claim 1 , wherein the golf ball further comprises a paint film covering the cover, and the paint film contains a resin component and a filler. 
     
     
         8 . The golf ball according to  claim 1 , wherein the golf ball further comprises a paint film covering the cover, and the paint film is a clear paint film. 
     
     
         9 . The golf ball according to  claim 1 , wherein the first region and the second region are each formed by a colored cover. 
     
     
         10 . The golf ball according to  claim 1 , wherein the first region and the second region are each formed by a colored paint film. 
     
     
         11 . The golf ball according to  claim 1 , wherein either one of the first region and the second region is formed by a colored cover, and the other one of the first region and the second region is formed by a colored paint film. 
     
     
         12 . The golf ball according to  claim 1 , wherein the hue H1 of the first color of the first region ranges from 20 to 340. 
     
     
         13 . The golf ball according to  claim 1 , wherein the hue H2 of the second color of the second region ranges from 0 to 360. 
     
     
         14 . The golf ball according to  claim 2 , wherein the hue H0 of the outermost layer of the intermediate layer ranges from 0 to 360. 
     
     
         15 . The golf ball according to  claim 2 , wherein the outermost layer of the intermediate layer has saturation S0 represented by S value in HSL color space, and the saturation S0 ranges from 30 to 100. 
     
     
         16 . The golf ball according to  claim 2 , wherein the outermost layer of the intermediate layer has lightness L0 represented by L value in HSL color space, and the lightness L0 ranges from 30 to 100. 
     
     
         17 . The golf ball according to  claim 7 , wherein an amount of the filler ranges from 3 parts by mass to 200 parts by mass with respect to 100 parts by mass of the resin component. 
     
     
         18 . The golf ball according to  claim 1 , wherein an area ratio of the first region to the second region ranges from 20/80 to 80/20.