diff --git a/src/backend/wayland/wl_backend.c b/src/backend/wayland/wl_backend.c
index 35ceada..43d34aa 100644
--- a/src/backend/wayland/wl_backend.c
+++ b/src/backend/wayland/wl_backend.c
@@ -8767,6 +8767,42 @@ static int wl_get_color_for_colormap(unsigned long colormap,
         }
     }
 
+    /* Look up in X11 rgb.txt database */
+    {
+        static const char *rgb_paths[] = {
+            "/usr/share/X11/rgb.txt",
+            "/usr/lib/X11/rgb.txt",
+            "/etc/X11/rgb.txt",
+            NULL
+        };
+        FILE *f = NULL;
+        for (int i = 0; rgb_paths[i] && !f; i++)
+            f = fopen(rgb_paths[i], "r");
+        if (f) {
+            char line[256];
+            while (fgets(line, sizeof(line), f)) {
+                unsigned int rv, gv, bv;
+                char name[128];
+                if (line[0] == '!' || line[0] == '#')
+                    continue;
+                if (sscanf(line, "%u %u %u %127[^\n]", &rv, &gv, &bv, name) == 4) {
+                    /* Trim leading whitespace/tabs from name */
+                    char *n = name;
+                    while (*n == ' ' || *n == '\t') n++;
+                    if (strcasecmp(n, color_name) == 0) {
+                        color->red = rv << 8 | rv;
+                        color->green = gv << 8 | gv;
+                        color->blue = bv << 8 | bv;
+                        color->pixel = (0xFF << 24) | (rv << 16) | (gv << 8) | bv;
+                        fclose(f);
+                        return 1;
+                    }
+                }
+            }
+            fclose(f);
+        }
+    }
+
     wwarning(_("could not parse color \"%s\" (Wayland)"), color_name);
     return 0;
 }