Colour-related diagrams

Each diagram can be viewed on its own page with a full explanation.

Why an Object Appears White
Why an Object Appears Red
Why an Object Appears Orange
Why an Object Appears Yellow
Why an Object Appears Green
Why an Object Appears Blue
Why an Object Appears Violet
Why an Object Appears Cyan
Why an Object Appears Magenta
Why an Object Appears Transparent
Combining Spectral Colours to Make White
Using The RGB Colour Model
Combining Red, Green & Blue Light
Spectral Colour & the RGB Colour Model
Spectral Colours & RGB Colours
The Human Eye & RGB Colour
Red Light on a Dark Surface
Green Light on a Dark Surface
Blue Light on a Dark Surface
R, G & B Lights on a Dark Surface
RGB Additive Colour Model
CMY Subtractive Colour Model
RYB Subtractive Colour Model
Spectral Colour Model
HSB Additive Colour Model
Overlapping Beams of R & G Make Yellow
Overlapping Beams of G & B Make Cyan
Overlapping Beams of B & R Make Magenta
Overlapping Beams of C, M & Y Make White
Adding Colours Between RGB Primaries
RGB Colour & Spectral Colour
RGB Colour Wheel with 3 Colours (wheel)
RGB Colour Wheel with 3 Colours (disc)
RGB Colour Wheel with 6 Colours (wheel)
RGB Colour Wheel with 6 Colours (disc)
RGB Colour Wheel with 18 Colours (wheel)
RGB Colour Wheel with 18 Colours (disc)
RGB Colour Wheel with 30 Colours (wheel)
RGB Colour Wheel with 30 Colours (disc)
RGB Colour Wheel with 102 Colours (wheel)
RGB Colour Wheel with 102 Colours (disc)
RGB Colour Wheel with 196 Colours (wheel)
RGB Colour Wheel with 196 Colours (continuous)
Refraction & Dispersion
How to See a Rainbow
Take a Photo of a Rainbow
Rainbow Anatomy
Rainbows Seen From the Air
Rainbows Seen From the Ground
A Rainbow is an Optical Phenomenon
Sun, Observer & Rainbow Share Axis
Lower the Sun, Higher the Rainbow
Higher the Sun, Lower the Rainbow
Rainbows Appear as Arcs of Colour
Apparent Position of a Rainbow
Deflection & Dispersion in Raindrops
Reflection & Refraction in a Raindrop
Dispersion of White Light in a Raindrop
Refraction & Dispersion in a Raindrop
Path of a Red Ray Through a Raindrop
Angle of Deviation in a Raindrop
Angular Distance & Raindrop Colour
Observed Colour of Raindrops
Changing Colour of a Falling Raindrop
Raindrop Elevation & Colour
Alexander's Band
Colour Brightness & Angular Distance
Rainbows as Discs of Colour
Rainbows as Cones of Colour
Rainbows & the Polarization of Light
Polarization of Light in a Raindrop
Path of Parallel Rays Through a Raindrop
Path of Rays Through a Raindrop
Raindrop Anatomy
Raindrop Geometry
Angle of Deviation
Minimum Angle of Deviation
Rainbow Rays
Angles of Deviation - Table
Refractive Index of Water
Spectral Colour
Spectral Colours on Screen
HSB Colour Model - Hue, Saturation & Brightness
Saturation in Sunlight
RGB Colour Model - Saturation
RGB & HSB Colour Values
HSB Colour Model - Hue & Saturation - wheel
HSB Colour Model - Hue & Brightness - wheel
HSB Colour Model - Hue & Saturation - grid
HSB Colour Model - Hue & Brightness - grid
RGB & HSB Colour Values
Hue & Greyscale
RGB Colour Wheels with 3 to 102 Colours
Colours Between RGB Primaries
RGB Primaries & Intermediate Colours
Mixing Primary Colours in Different Proportions
Mixing RGB Primary Colours
Digital Screens use the RGB Colour Model
HSB Colour Model - discs
HSB Colour Model: Disks
HSB Colour Model - wedges
HSB Colour Model: Wedges
HSB Greyscale - discs
Greyscale: Disks
HSB Greyscale - wedges
HSB Greyscale: Wedges
256 RGB Colours - Red to Yellow
256 RGB Colours - Yellow to Green - Grid
256 RGB Colours - Green to Cyan
256 RGB Colours - Cyan to Blue
256 RGB Colours - Blue to Magenta
256 RGB Colours - Magenta to Red
1530 RGB Colours - Swatches
1530 RGB Colours - Values
256 RGB Colours -  Red & Yellow - Grid
RGB Colour Picker: Red to Yellow - Values
256 RGB Colours - Yellow & Green - Grid
RGB Colour Picker: Yellow to Green - Values
256 RGB Colours - Green & Cyan - Grid
RGB Colour Picker: Green to Cyan - Values
256 RGB Colours - Cyan & Blue - Grid
RGB Colour Picker: Cyan to Blue - Values
256 RGB Colours - Blue & Magenta - Grid
RGB Colour Picker: Blue to Magenta - Values
256 RGB Colours - Magenta & Red - Grid
RGB Colour Picker: Magenta to Red - Values

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