Op Art Coloring with Mess-Free Techniques (Markers & Colored Pencils)
Op art coloring is one of my favorite low-prep ways to teach optical illusion art while still giving students room to experiment with color mixing, value, and texture—without pulling out paint trays or dealing with cleanup.
The quick start pages included in my Op Art lessons are perfect for this. They let students jump straight into coloring techniques while still reinforcing the core ideas behind op art, contrast, and visual movement.
Below are four mess-free op art coloring techniques using only washable markers and colored pencils. Each one works beautifully on op art coloring pages and is easy to demonstrate step-by-step in the classroom.
Art Supplies and Paper for Op Art Coloring
Paper choice makes a huge difference when using marker and water techniques.
- 90 lb drawing paper works best for wet marker techniques
- It takes a little extra effort to copy pages onto heavier paper, but the results are worth it
- Water allows the marker pigment to move across the surface, creating soft blends, blooms, and fuzzy edges
- Copy paper absorbs water too quickly, so the color barely changes
Supplies used in the examples below:
- Washable markers
- Colored pencils
- Colored pencil sticks (colored pencils without wood)
- Texture plates or rubbing textures
- Soft paintbrush for water
Op Art Coloring with Marker & Water (Two Colors)
This technique is simple, controlled, and very effective for teaching color relationships.
Color choices that work best:
- Two colors next to each other on the color wheel
- Two primary colors
- Two shades of the same color
Avoid complementary pairs like red and green unless you want brown tones.
Steps:
- Outline the white areas of an op art coloring page with two markers
- Gently brush plain water over the marker lines and white areas
- Let the color flow into the center on its own
The movement of the pigment creates a watercolor-like effect while staying completely mess-free.
The design shown here comes from my Op Art Coloring Pages set, which includes:
- 4 dedicated OP ART designs
- Sample pages from 8 additional op art lessons
Op Art Coloring with Marker & Textures
The page shown comes from Op Art Using Line & Value, which includes a Value Scale Practice sheet. This page is ideal for experimenting before committing to a final design.
Classroom tip:
- Have students test techniques on scrap paper first.
- Value scale techniques shown:
- Outline with marker, then soften with water for a light value
- 2–4. Color solid with marker, then add texture rubbing for progressively darker values
- I used a colored pencil stick, but regular colored pencils or crayons work just as well.
What Are Quick Start Pages?
Every Op Art lesson I create includes quick start pages in addition to step-by-step drawing instructions.
Quick start pages:
- Function like structured coloring pages
- Allow students to focus on color, value, and technique
- Are perfect for younger students or tight schedules
- Make it easy to create technique samples quickly
They’re a huge time-saver and a great way to introduce op art concepts without starting from a blank page.
Op Art Coloring with Markers & Colored Pencils
Steps:
- Outline white areas with two complementary markers (red and green shown)
- Use water to soften the marker color and let the paper dry completely
- Add colored pencil shading along edges and backgrounds
- Optional: deepen shadows with a third color (blue shown)
Letting the paper dry fully is essential—colored pencil won’t adhere well to damp paper.
The added pencil shading increases contrast and makes the op art shape appear more three-dimensional.
Op Art Coloring with Marker & Water (One Color, Two Techniques)
Steps:
- Color the main shape solid with marker
- Outline background white areas with marker
- Lightly brush water over the outlined areas only
The result:
- Soft, fuzzy background textures
- Sharp, solid foreground shape
- A strong illusion that the shape is floating
This works especially well on 90 lb drawing paper and clearly demonstrates positive and negative space.
Op Art Lessons Featured in This Post
Which op art coloring technique would your students enjoy most?
Have you tried combining markers, water, and colored pencils in your op art lessons?
Feel free to leave a comment, and tag Expressive Monkey if you share student work online.
The Benefits of Drawing
Use this infographic to display in your room or share with parents, administrators, or other teachers as a way to point out some of the academic benefits of learning to draw. While they are not the only reason for using drawing as part of a balanced curriculum, they are certainly worthy of celebrating and may help you advocate for including drawing as part of your art or classroom learning experiences.
You can read more about The Benefits of Drawing in this blog post.
