diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index 757cddc..05904cd 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -27,6 +27,7 @@ if (BUILD_TEST)
 		gdimageclone
 		gdimagecolor
 		gdimagecolorclosest
+		gdimagecolorclosesthwb
 		gdimagecolordeallocate
 		gdimagecolorexact
 		gdimagecolormatch
diff --git a/tests/Makefile.am b/tests/Makefile.am
index d0e4273..f672032 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -23,6 +23,7 @@ include gdimagebrightness/Makemodule.am
 include gdimageclone/Makemodule.am
 include gdimagecolor/Makemodule.am
 include gdimagecolorclosest/Makemodule.am
+include gdimagecolorclosesthwb/Makemodule.am
 include gdimagecolordeallocate/Makemodule.am
 include gdimagecolorexact/Makemodule.am
 include gdimagecolormatch/Makemodule.am
diff --git a/tests/gdimagecolorclosesthwb/.gitignore b/tests/gdimagecolorclosesthwb/.gitignore
new file mode 100644
index 0000000..f46016c
--- /dev/null
+++ b/tests/gdimagecolorclosesthwb/.gitignore
@@ -0,0 +1 @@
+/gdImageColorClosestHWB
diff --git a/tests/gdimagecolorclosesthwb/CMakeLists.txt b/tests/gdimagecolorclosesthwb/CMakeLists.txt
new file mode 100644
index 0000000..7a8afdc
--- /dev/null
+++ b/tests/gdimagecolorclosesthwb/CMakeLists.txt
@@ -0,0 +1,7 @@
+IF(PNG_FOUND)
+LIST(APPEND TESTS_FILES
+	gdImageColorClosestHWB
+)
+ENDIF(PNG_FOUND)
+
+ADD_GD_TESTS()
diff --git a/tests/gdimagecolorclosesthwb/Makemodule.am b/tests/gdimagecolorclosesthwb/Makemodule.am
new file mode 100644
index 0000000..14eddbd
--- /dev/null
+++ b/tests/gdimagecolorclosesthwb/Makemodule.am
@@ -0,0 +1,7 @@
+if HAVE_LIBPNG
+libgd_test_programs += \
+	gdimagecolorclosesthwb/gdImageColorClosestHWB
+endif
+
+EXTRA_DIST += \
+	gdimagecolorclosesthwb/CMakeLists.txt
diff --git a/tests/gdimagecolorclosesthwb/gdImageColorClosestHWB.c b/tests/gdimagecolorclosesthwb/gdImageColorClosestHWB.c
new file mode 100644
index 0000000..ab20187
--- /dev/null
+++ b/tests/gdimagecolorclosesthwb/gdImageColorClosestHWB.c
@@ -0,0 +1,26 @@
+/**
+  * Basic test for gdImageColorClosestHWB()
+  **/
+#include "gd.h"
+#include "gdtest.h"
+
+int main()
+{
+	gdImagePtr im;
+	FILE *fp;
+
+	fp = gdTestFileOpen2("gdimageflip", "remi.png");
+	im = gdImageCreateFromPng(fp);
+	fclose(fp);
+
+	int result = gdImageColorClosestHWB(im, 255, 0, 255);
+
+	if (gdTestAssert(result <= 0))
+	{
+		gdImageDestroy(im);
+		return 1;
+	}
+
+	gdImageDestroy(im);
+	return 0;
+}