Contour Drawing with Selected-Color Fill: Edge and Shape Study

Object Drawing Lessons

Contour drawing isolates the edge of a form. When you add flat color inside the enclosed regions, you test whether your line actually closes and whether each shape reads clearly. This lesson uses a simple object reference, a blank practice area, and a color-fill box. You will redraw the contour, close every region, and apply selected flat colors. The goal is not realism or shading but clear edges and readable shapes. All measurements are hypothetical examples; measure your own paper and tools. Work in pencil first, then ink or marker, then color. Keep the line single and continuous where possible, and let the color stay flat inside the lines.

Practice materials: Printable downloads are not available for this lesson yet. Use the instructions and four exercises below.

Read the contour before you draw

A contour is the line that describes where a form turns away from you. On a simple object such as a mug, the outer silhouette and the inner ellipse of the rim are both contours. Before drawing, trace the edge with your eye and name the enclosed regions: the body, the handle opening, the rim interior. Each region must close so color can sit inside it.

Use a light pencil to mark the extreme points: top, bottom, left, right. These four points set the proportion. If the object is about twice as tall as it is wide, mark that ratio on your paper with a hypothetical example of 8 cm tall and 4 cm wide. Measure your actual object and paper rather than copying these numbers.

1. Place the object where you can see one clear edge.
2. Mark the top, bottom, left, and right extreme points lightly.
3. Check the height-to-width ratio with a ruler or by eye.
4. Name each enclosed region aloud before drawing its line.

Draw one clean contour line

Draw the outer silhouette first as one continuous line, then add interior contour lines that separate regions. Keep the line thin and even. If the line crosses itself, you create a false region that will confuse the color fill. Erase and redraw any crossing before inking.

A useful convention for this lesson: x-height means the distance from the baseline to the midline of a letter, and letter styles vary. Apply the same idea to your drawing by defining a baseline and a midline for the object so you can compare heights consistently. This convention is for measurement only; it does not require a particular lettering style.

1. Draw the outer silhouette in one pass, lifting the pencil only at the start and end.
2. Add interior lines that close each region.
3. Check for gaps and crossings with a fingertip or a light source behind the paper.
4. Ink over the accepted lines once the pencil contour is clean.

Fill enclosed regions with flat chosen colors

Choose two or three flat colors and assign each to a named region. Color inside the line, not over it. Keep the color flat: no gradients, no blending, no shading. If a region is small, use a smaller tool or a lighter touch so the color does not spill.

Test color coverage on a scrap of the same paper. A hypothetical example is a 2 cm by 2 cm test square; measure your own scrap. If the color bleeds through the line, wait for the ink to dry or use a drier medium. The color-fill box on the plate is where you redraw the contour and fill it, so the practice area and the fill box should use the same scale.

1. Assign one flat color to each enclosed region.
2. Color from the center of the region outward to the line.
3. Keep the line visible; do not color over it.
4. Check that every region is filled and no color crosses a contour.

Review edge and shape

Compare your filled drawing to the reference. Ask whether each region closes, whether the proportions match your measured ratio, and whether the flat colors make the shapes easier to read. A valid alternative is to change the color assignment or to simplify a contour, as long as the regions still close and the edge remains clear.

Record one change you would make next time. This review is part of the study, not a final judgment. Keep the drawing and the reference side by side so the comparison is direct.

1. Check every region for a closed contour.
2. Compare the height-to-width ratio to your measured ratio.
3. Confirm the colors are flat and inside the lines.
4. Write one specific change for the next attempt.

Worked example

A mug is 8 cm tall and 4 cm wide at its widest point. Draw its outer silhouette and the rim ellipse, then fill the body with one flat color and the rim interior with another. Use a hypothetical 2 cm test square to check color coverage.

Four practice exercises

Common mistakes

• Drawing the contour with many short, broken strokes. Redraw the edge as one continuous line, lifting the pencil only at the start and end.
• Leaving a gap in an interior line so color leaks into the next region. Trace each region with a fingertip to find gaps, then close them before coloring.
• Coloring over the contour line and losing the edge. Color from the region center outward and stop at the line; keep the line visible.
• Adding shading or blending inside a flat-color region. Keep each region one flat color; remove gradients and use a second region if a new color is needed.

Self-check rubric

• Contour line is continuous and closes every region.
• Height-to-width ratio matches the measured ratio within a small tolerance.
• Each enclosed region is filled with one flat chosen color.
• No shading, blending, or color over the contour line.
• Valid alternatives are accepted: color assignment may change and contours may be simplified if regions close and edges stay clear.

Questions and answers