Elm-Vega Colour Tests

Default Schemes

Default continuous colours
Default ordinal colours
Default nominal colours

Named Schemes

Named colour scheme (plasma)
Upper range of named colour scheme
Reversed named colour scheme
Upper range of reversed colour scheme

Custom Schemes

Custom continuous range (red to blue)
Custom discrete values (red, green, blue)

Colour Scales

Linear scale (default)
Power scale with default (linear) exponent
Cubic power scale
Square root scale
Log Scale
SymLog Scale with default slope constant (1)
SymLog Scale with slope constant of 0.01

Interpolation Type

HSL interpolation
HSL-long interpolation
Lab interpolation
HCL interpolation
HCL-long interpolation
Cubehelix interpolation
Cubehelix-long interpolation

Gamma Value

Cubehelix-long, gamma = -0.1
Cubehelix-long, gamma = 0
Cubehelix-long, (default) gamma = 1
Cubehelix-long, gamma = 2
Cubehelix-long, gamma = 10

Blend Modes

Colour blending, that should approximate these CSS examples
Interactive choice of colour blend mode.
Interactive choice of colour background.

Source