100 Days of Posters / Day 021 of 100

Day 21: One Hue

A monochromatic poster built from tints and shades.

Chapter
03 Colour
Level
Beginner
Time
30–45 minutes
Canvas
1080 × 1350 px

The principle

A monochromatic palette uses one hue at different levels of lightness and saturation. It is the gentlest introduction to colour because it removes the problem of colour harmony and leaves you with value: how light or dark each area is. A monochrome poster can feel calm, intense or atmospheric depending on the hue and range.

Objective. Create depth and hierarchy using variations of a single hue.

The brief

Design a poster for an aquarium night-opening using only tints and shades of one hue.

Constraints

  • One hue only — vary its lightness and saturation
  • At least four distinct values
  • Shapes and typography only

You're done when

  • A single hue throughout
  • Clear value range from light to dark
  • Readable text with enough contrast

Stretch goal

Make the same poster in a different hue and notice how the subject feels different.