diff --git a/src/basic_recipes/scatterlines.jl b/src/basic_recipes/scatterlines.jl
index 3808e6ae01a..6e51549846f 100644
--- a/src/basic_recipes/scatterlines.jl
+++ b/src/basic_recipes/scatterlines.jl
@@ -17,8 +17,8 @@ $(ATTRIBUTES)
         linestyle = l_theme.linestyle,
         linewidth = l_theme.linewidth,
         markercolor = automatic,
-        markercolormap = s_theme.colormap,
-        markercolorrange = get(s_theme.attributes, :colorrange, automatic),
+        markercolormap = automatic,
+        markercolorrange = automatic,
         markersize = s_theme.markersize,
         strokecolor = s_theme.strokecolor,
         strokewidth = s_theme.strokewidth,
@@ -32,8 +32,7 @@ end
 function plot!(p::Plot{scatterlines, <:NTuple{N, Any}}) where N
 
     # markercolor is the same as linecolor if left automatic
-    # RGBColors -> union of all colortypes that `to_color` accepts + returns
-    real_markercolor = Observable{RGBColors}()
+    real_markercolor = Observable{Any}()
     map!(real_markercolor, p.color, p.markercolor) do col, mcol
         if mcol === automatic
             return to_color(col)
@@ -42,6 +41,16 @@ function plot!(p::Plot{scatterlines, <:NTuple{N, Any}}) where N
         end
     end
 
+    real_markercolormap = Observable{Any}()
+    map!(real_markercolormap, p.colormap, p.markercolormap) do col, mcol
+        mcol === automatic ? col : mcol
+    end
+
+    real_markercolorrange = Observable{Any}()
+    map!(real_markercolorrange, p.colorrange, p.markercolorrange) do col, mcol
+        mcol === automatic ? col : mcol
+    end
+
     lines!(p, p[1:N]...;
         color = p.color,
         linestyle = p.linestyle,
@@ -57,9 +66,9 @@ function plot!(p::Plot{scatterlines, <:NTuple{N, Any}}) where N
         strokewidth = p.strokewidth,
         marker = p.marker,
         markersize = p.markersize,
-        colormap = p.markercolormap,
+        colormap = real_markercolormap,
         colorscale = p.colorscale,
-        colorrange = p.markercolorrange,
+        colorrange = real_markercolorrange,
         inspectable = p.inspectable
     )
 end
diff --git a/test/primitives.jl b/test/primitives.jl
index 17a2acaaacb..f1b28860a24 100644
--- a/test/primitives.jl
+++ b/test/primitives.jl
@@ -48,3 +48,28 @@ end
 #     linesegments!(Makie.data_limits(ax.scene), color=:red)
 #     display(fig)
 # end
+
+
+# https://github.com/MakieOrg/Makie.jl/issues/3551
+@testset "scalar color for scatterlines" begin
+    colorrange = (1, 5)
+    colormap = :Blues
+    f, ax, sl = scatterlines(1:10,1:10,color=3,colormap=colormap,colorrange=colorrange)
+    l = sl.plots[1]::Lines
+    sc = sl.plots[2]::Scatter
+    @test l.color[] == 3
+    @test l.colorrange[] == colorrange
+    @test l.colormap[] == colormap
+    @test sc.color[] == 3
+    @test sc.colorrange[] == colorrange
+    @test sc.colormap[] == colormap
+    sl.markercolor = 4
+    sl.markercolormap = :jet
+    sl.markercolorrange = (2, 7)
+    @test l.color[] == 3
+    @test l.colorrange[] == colorrange
+    @test l.colormap[] == colormap
+    @test sc.color[] == 4
+    @test sc.colorrange[] == (2, 7)
+    @test sc.colormap[] == :jet
+end