diff --git a/app/core/gimpgradient.c b/app/core/gimpgradient.c
index 07902f73f2..148fc8a09a 100644
--- a/app/core/gimpgradient.c
+++ b/app/core/gimpgradient.c
@@ -132,8 +132,8 @@ gimp_gradient_class_init (GimpGradientClass *klass)
   fish_linear_rgb_to_srgb = babl_fish (babl_format ("RGB double"),
                                        babl_format ("R'G'B' double"));
   fish_srgb_to_cie_lab    = babl_fish (babl_format ("R'G'B' double"),
-                                       babl_format ("CIE Lab double"));
-  fish_cie_lab_to_srgb    = babl_fish (babl_format ("CIE Lab double"),
+                                       babl_format ("CIE Lab float"));
+  fish_cie_lab_to_srgb    = babl_fish (babl_format ("CIE Lab float"),
                                        babl_format ("R'G'B' double"));
 }
 
@@ -552,6 +552,7 @@ gimp_gradient_get_color_at (GimpGradient                 *gradient,
 
   if (seg->color == GIMP_GRADIENT_SEGMENT_RGB)
     {
+      gfloat  float_components[3];
       gdouble left_components[3];
       gdouble right_components[3];
       gdouble ret_components[3];
@@ -559,8 +560,13 @@ gimp_gradient_get_color_at (GimpGradient                 *gradient,
       switch (blend_color_space)
         {
         case GIMP_GRADIENT_BLEND_CIE_LAB:
-          gegl_color_get_pixel (left_color, babl_format ("CIE Lab double"), left_components);
-          gegl_color_get_pixel (right_color, babl_format ("CIE Lab double"), right_components);
+          gegl_color_get_pixel (left_color, babl_format ("CIE Lab float"), float_components);
+          for (gint i = 0; i < 3; i++)
+            left_components[i] = float_components[i];
+
+          gegl_color_get_pixel (right_color, babl_format ("CIE Lab float"), float_components);
+          for (gint i = 0; i < 3; i++)
+            right_components[i] = float_components[i];
           break;
 
         case GIMP_GRADIENT_BLEND_RGB_LINEAR:
@@ -582,7 +588,9 @@ gimp_gradient_get_color_at (GimpGradient                 *gradient,
       switch (blend_color_space)
         {
         case GIMP_GRADIENT_BLEND_CIE_LAB:
-          gegl_color_set_pixel (*color, babl_format ("CIE Lab double"), ret_components);
+          for (gint i = 0; i < 3; i++)
+            float_components[i] = (gfloat) ret_components[i];
+          gegl_color_set_pixel (*color, babl_format ("CIE Lab float"), float_components);
           break;
 
         case GIMP_GRADIENT_BLEND_RGB_LINEAR:
diff --git a/app/core/gimppalette-load.c b/app/core/gimppalette-load.c
index 581a0d255a..4e9531b1ae 100644
--- a/app/core/gimppalette-load.c
+++ b/app/core/gimppalette-load.c
@@ -583,11 +583,11 @@ gimp_palette_load_aco (GimpContext   *context,
         }
       else if (color_space == 7) /* CIE Lab */
         {
-          gdouble lab[3] = { ((gdouble) w) / 10000.0,
-                             ((gdouble) xLab) / 25500.0,
-                             ((gdouble) yLab) / 25500.0 };
+          gfloat lab[3] = { ((gfloat) w) / 10000.0f,
+                            ((gfloat) xLab) / 25500.0f,
+                            ((gfloat) yLab) / 25500.0f };
 
-          gegl_color_set_pixel (color, babl_format ("CIE Lab double"), lab);
+          gegl_color_set_pixel (color, babl_format ("CIE Lab float"), lab);
           color_ok = TRUE;
         }
       else if (color_space == 8) /* Grayscale */
diff --git a/libgimpwidgets/gimpcolorscales.c b/libgimpwidgets/gimpcolorscales.c
index 212d4fa11c..e5e641ace6 100644
--- a/libgimpwidgets/gimpcolorscales.c
+++ b/libgimpwidgets/gimpcolorscales.c
@@ -896,7 +896,7 @@ gimp_color_scales_scale_changed (GtkWidget       *scale,
   GimpColorSelector *selector = GIMP_COLOR_SELECTOR (scales);
   GeglColor         *color    = gimp_color_selector_get_color (selector);
   gdouble            value    = gimp_label_spin_get_value (GIMP_LABEL_SPIN (scale));
-  gdouble            lch[4];
+  gfloat             lch[4];
   gfloat             hsv[4];
   gdouble            rgb[4];
   gint               i;
@@ -907,7 +907,7 @@ gimp_color_scales_scale_changed (GtkWidget       *scale,
 
   gegl_color_get_pixel (color, babl_format_with_space ("R'G'B'A double", scales->format), rgb);
   gegl_color_get_pixel (color, babl_format_with_space ("HSVA float", scales->format), hsv);
-  gegl_color_get_pixel (color, babl_format ("CIE LCH(ab) alpha double"), lch);
+  gegl_color_get_pixel (color, babl_format ("CIE LCH(ab) alpha float"), lch);
 
   switch (i)
     {
@@ -940,15 +940,15 @@ gimp_color_scales_scale_changed (GtkWidget       *scale,
       break;
 
     case GIMP_COLOR_SELECTOR_LCH_LIGHTNESS:
-      lch[0] = value;
+      lch[0] = (gfloat) value;
       break;
 
     case GIMP_COLOR_SELECTOR_LCH_CHROMA:
-      lch[1] = value;
+      lch[1] = (gfloat) value;
       break;
 
     case GIMP_COLOR_SELECTOR_LCH_HUE:
-      lch[2] = value;
+      lch[2] = (gfloat) value;
       break;
 
     case GIMP_COLOR_SELECTOR_RED_U8:
@@ -977,7 +977,7 @@ gimp_color_scales_scale_changed (GtkWidget       *scale,
   else if ((i >= GIMP_COLOR_SELECTOR_LCH_LIGHTNESS) &&
            (i <= GIMP_COLOR_SELECTOR_LCH_HUE))
     {
-      gegl_color_set_pixel (color, babl_format ("CIE LCH(ab) alpha double"), lch);
+      gegl_color_set_pixel (color, babl_format ("CIE LCH(ab) alpha float"), lch);
     }
   else if (((i >= GIMP_COLOR_SELECTOR_RED) &&
             (i <= GIMP_COLOR_SELECTOR_BLUE)) ||
diff --git a/libgimpwidgets/gimpcolorselect.c b/libgimpwidgets/gimpcolorselect.c
index fa0192c65b..4e06c9e0ba 100644
--- a/libgimpwidgets/gimpcolorselect.c
+++ b/libgimpwidgets/gimpcolorselect.c
@@ -176,7 +176,7 @@ struct _ColorSelectFill
   gint     height;
   gfloat   rgb[3];
   gfloat   hsv[3];
-  gdouble  lch[4];
+  gfloat   lch[4];
   guchar   oog_color[3];
 
   ColorSelectRenderFunc render_line;
@@ -1433,7 +1433,7 @@ gimp_color_select_render (GtkWidget           *preview,
 
   gegl_color_get_pixel (color, rgbf_format, csf.rgb);
   gegl_color_get_pixel (color, hsvf_format, csf.hsv);
-  gegl_color_get_pixel (color, babl_format ("CIE LCH(ab) alpha double"), csf.lch);
+  gegl_color_get_pixel (color, babl_format ("CIE LCH(ab) alpha float"), csf.lch);
 
   csf.oog_color[0] = oog_color[0];
   csf.oog_color[1] = oog_color[1];