diff --git a/emigui_glium/src/painter.rs b/emigui_glium/src/painter.rs
index 306000d8..15065e38 100644
--- a/emigui_glium/src/painter.rs
+++ b/emigui_glium/src/painter.rs
@@ -41,8 +41,18 @@ impl Painter {
                         in vec4 v_color;
                         in vec2 v_tc;
                         out vec4 f_color;
+
+                        // glium expects linear output.
+                        vec3 linear_from_srgb(vec3 srgb) {
+                            bvec3 cutoff = lessThan(srgb, vec3(0.04045));
+                            vec3 higher = pow((srgb + vec3(0.055)) / vec3(1.055), vec3(2.4));
+                            vec3 lower = srgb / vec3(12.92);
+                            return mix(higher, lower, cutoff);
+                        }
+
                         void main() {
                             f_color = v_color;
+                            f_color.rgb = linear_from_srgb(f_color.rgb);
                             f_color.a *= texture(u_sampler, v_tc).r;
                         }
                     "
@@ -74,8 +84,18 @@ impl Painter {
                         uniform sampler2D u_sampler;
                         varying vec4 v_color;
                         varying vec2 v_tc;
+
+                        // glium expects linear output.
+                        vec3 linear_from_srgb(vec3 srgb) {
+                            bvec3 cutoff = lessThan(srgb, vec3(0.04045));
+                            vec3 higher = pow((srgb + vec3(0.055)) / vec3(1.055), vec3(2.4));
+                            vec3 lower = srgb / vec3(12.92);
+                            return mix(higher, lower, cutoff);
+                        }
+
                         void main() {
                             gl_FragColor = v_color;
+                            gl_FragColor.rgb = linear_from_srgb(gl_FragColor.rgb);
                             gl_FragColor.a *= texture2D(u_sampler, v_tc).r;
                         }
                     ",
@@ -107,8 +127,18 @@ impl Painter {
                         uniform sampler2D u_sampler;
                         varying mediump vec4 v_color;
                         varying mediump vec2 v_tc;
+
+                        // glium expects linear output.
+                        vec3 linear_from_srgb(vec3 srgb) {
+                            bvec3 cutoff = lessThan(srgb, vec3(0.04045));
+                            vec3 higher = pow((srgb + vec3(0.055)) / vec3(1.055), vec3(2.4));
+                            vec3 lower = srgb / vec3(12.92);
+                            return mix(higher, lower, cutoff);
+                        }
+
                         void main() {
                             gl_FragColor = v_color;
+                            gl_FragColor.rgb = linear_from_srgb(gl_FragColor.rgb);
                             gl_FragColor.a *= texture2D(u_sampler, v_tc).r;
                         }
                     ",