diff --git a/src/traces/parcoords/attributes.js b/src/traces/parcoords/attributes.js
index a4b50111e9a..e858085dc8c 100644
--- a/src/traces/parcoords/attributes.js
+++ b/src/traces/parcoords/attributes.js
@@ -139,7 +139,7 @@ module.exports = {
         line: {
             color: {
                 valType: 'color',
-                dflt: '#777',
+                dflt: '#7f7f7f',
                 editType: 'plot',
                 description: [
                     'Sets the base color of unselected lines.',
diff --git a/test/image/baselines/gl2d_parcoords.png b/test/image/baselines/gl2d_parcoords.png
index 51ea8f963da..6c76d0dc7de 100644
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diff --git a/test/image/baselines/gl2d_parcoords_2.png b/test/image/baselines/gl2d_parcoords_2.png
index 50b1bd220db..96f14b7e1d5 100644
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diff --git a/test/image/baselines/gl2d_parcoords_60_dims.png b/test/image/baselines/gl2d_parcoords_60_dims.png
index 37135c0d78a..088eb90b4a3 100644
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diff --git a/test/image/baselines/gl2d_parcoords_blocks.png b/test/image/baselines/gl2d_parcoords_blocks.png
index 3714f999534..e88f03f5461 100644
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diff --git a/test/image/baselines/gl2d_parcoords_coloraxis.png b/test/image/baselines/gl2d_parcoords_coloraxis.png
index 60c8641ea29..7dc70d9c0b1 100644
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diff --git a/test/image/baselines/gl2d_parcoords_dark_background.png b/test/image/baselines/gl2d_parcoords_dark_background.png
index df8f4100db1..d3db0b5c09d 100644
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diff --git a/test/image/baselines/gl2d_parcoords_large.png b/test/image/baselines/gl2d_parcoords_large.png
index c7afe5c8561..ee5c7067c41 100644
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diff --git a/test/image/baselines/gl2d_parcoords_out-of-range_selected-above-below.png b/test/image/baselines/gl2d_parcoords_out-of-range_selected-above-below.png
index 6bc2125f620..c5a1d259220 100644
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diff --git a/test/image/baselines/gl2d_parcoords_out-of-range_selected-all.png b/test/image/baselines/gl2d_parcoords_out-of-range_selected-all.png
index bef6564d9ac..1cdc53b3e5a 100644
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diff --git a/test/image/baselines/gl2d_parcoords_out-of-range_selected-below.png b/test/image/baselines/gl2d_parcoords_out-of-range_selected-below.png
index 257b85b81eb..b629e1026b1 100644
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diff --git a/test/image/baselines/gl2d_parcoords_out-of-range_selected-none.png b/test/image/baselines/gl2d_parcoords_out-of-range_selected-none.png
index 1d02e406a36..6337c56b29d 100644
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diff --git a/test/image/baselines/gl2d_parcoords_rgba_colorscale.png b/test/image/baselines/gl2d_parcoords_rgba_colorscale.png
index 5da3a36e064..30c53d0931e 100644
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diff --git a/test/image/baselines/gl2d_parcoords_select_first_last_enum.png b/test/image/baselines/gl2d_parcoords_select_first_last_enum.png
index fd3741d58a8..9af6193453e 100644
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diff --git a/test/image/baselines/gl2d_parcoords_style_labels.png b/test/image/baselines/gl2d_parcoords_style_labels.png
index b0bb7efe47e..aa9311b951d 100644
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diff --git a/test/image/baselines/gl2d_parcoords_tick_format.png b/test/image/baselines/gl2d_parcoords_tick_format.png
index e0894faa41d..8124d08956d 100644
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diff --git a/test/plot-schema.json b/test/plot-schema.json
index 5fda370259d..1ef1f5fe420 100644
--- a/test/plot-schema.json
+++ b/test/plot-schema.json
@@ -40360,7 +40360,7 @@
      "line": {
       "color": {
        "description": "Sets the base color of unselected lines. in connection with `unselected.line.opacity`.",
-       "dflt": "#777",
+       "dflt": "#7f7f7f",
        "editType": "plot",
        "valType": "color"
       },