The photos of these color samples are meant to provide an overview of how each color behave in mixes.
The first two samples are base colour. The next 9 samples are the base color added increasing amounts of white indicated above each color.
The last 4 samples are equal amounts of base color and a contrasting color mixed in two variants . The two are mixed in two variations with white.
Winsor and Newton - Artist's Oils

724 - Winsor Orange
X1: 721 - Winsor Green Y
X2: 692 - Viridian
Transparence:SO Permanence::A
Colour Index Name: PO73

724 - Winsor Orange/Grey
X1: 721 - Winsor Green Y
X2: 692 - Viridian
Transparence:SO
Permanence::A
Colour Index Name: PO73

603 - Scarlet Lake
X1: 708 - Winsor Emerald
X2: 459 - Oxide of Chromium
Transparence:SO
Permanence::A
Colour Index Name: PR255

603 - Scarlet Lake/Grey
X1: 708 - Winsor Emerald
X2: 459 - Oxide of Chromium
Transparence:SO
Permanence::A
Colour Index Name: PR255

042 - Bright Red
X1: 721 - Winsor Green Y
X2: 692 - Viridian
Transparence:T Permanence::A
Colour Index Name: PR254

042 - Bright Red/Grey
X1: 721 - Winsor Green Y
X2: 692 - Viridian
Transparence:T Permanence::A
Colour Index Name: PR254

725 - Winsor Red Deep
X1: 721 - Winsor Green Y
X2: 692 - Viridian
Transparence:ST Permanence::A
Colour Index Name: PR149

468 - Permanent Alizarin
X1: 708 - Winsor Emerald
X2: 459 - Oxide of Chromium
Transparence:T Permanence::A
Colour Index Name: PR177

004 Alizarin Crimson
X1: 721 - Winsor Green Y
X2: 692 - Viridian
Transparence:T Permanence::B
Colour Index Name: PR83

094 - Cadmium Red
X1: 708 - Winsor Emerald
X2: 459 - Oxide of Chromium
Transparence:O
Permanence::A
Colour Index Name: PR108

094 - Cadmium Red - Grey
X1: 708 - Winsor Emerald
X2: 459 - Oxide of Chromium
Transparence:O
Permanence::A
Colour Index Name: PR108

548 - Quinacridone Red
X1: 708 - Winsor Emerald
X2: 459 - Oxide of Chromium
Transparence:T
Permanence:A
Colour Index Name: PR209

587 - Rose Madder Genuine
X1: 721 - Winsor Green Y
X2: 692 - Viridian
Transparence:T Permanence::A
Colour Index Name: NR9

587 - Rose Madder Genuine/Grey
X1: 721 - Winsor Green Y
X2: 692 - Viridian
Transparence:T Permanence::A
Colour Index Name: NR9

545 - Quinacridone Magenta
X1: 708 - Winsor Emerald
X2: 459 - Oxide of Chromium
Transparence:T Permanence::A
Colour Index Name: PR122

489 -Permanent Magenta
X1: 111 - Cadmium Yellow Deep
X2: 730 - Winsor Yellow
Transparency: T
Permanence: A
Colour Index Name: PV19

491 - Permanent Mauve
X1: 111 - Cadmium Yellow Deep
X2: 730 - Winsor Yellow
Transparency: ST
Permanence: AA
Colour Index Name: PV16

192 - Cobalt Violet
X1: 111 - Cadmium Yellow Deep
X2: 730 - Winsor Yellow
Transparency: ST
Permanence: AA
Colour Index Name: PV14

733 - Winsor Violet
X1: 111 - Cadmium Yellow Deep
X2: 730 - Winsor Yellow
Transparency: T
Permanence: A
Colour Index Name: PV23

672 - Ultramarine Violet
X1: 111 - Cadmium Yellow Deep
X2: 730 - Winsor Yellow
Transparency: T
Permanence: A
Colour Index Name: PV15

178 - Cobalt Blue
X1: 111 - Cadmium Yellow Deep
X2: 730 - Winsor Yellow
Transparency: ST
Permanence: AA
Colour Index Name: PB28

263 - French Ultramarine
X1: 111 - Cadmium Yellow Deep
X2: 730 - Winsor Yellow
Transparency: T
Permanence: A
Colour Index Name: PB29

180 - Cobalt Blue Deep
X1: 111 - Cadmium Yellow Deep
X2: 730 - Winsor Yellow
Transparency: ST
Permanence: AA
Colour Index Name: PB74

137 - Cerulean Blue
X1: 111 - Cadmium Yellow Deep
X2: 730 - Winsor Yellow
Transparency: SO
Permanence: AA
Colour Index Name: PB35

321 - Indanthrene Blue
X1: 111 - Cadmium Yellow Deep
X2: 730 - Winsor Yellow
321 - Indanthrene Blue
Transparency: T
Permanence: A
Colour Index Name: PB60

538 - Prussian Blue
X1: 111 - Cadmium Yellow Deep
X2: 730 - Winsor Yellow
Transparency: T
Permanence: A
Colour Index Name: PB27

190 - Cobalt Turquoise
X1: 603 - Scarlet Lake
X2: 094 - Cadmium Red
Transparency: O
Permanence: AA
Colour Index Name: PB36

191 Cobalt Turquise Light
X1: 111 - Cadmium Yellow Deep
X2: 730 - Winsor Yellow
Transparency: O
Permanence: AA
Colour Index Name: PG50

720 - Winsor Green (PHTHALO)
X1: 603 - Scarlet Lake
X2: 094 - Cadmium Red
Transparency: T
Permanence: A
Colour Index Name: PG7

721 - Winsor Green Yellow
X1: 603 - Scarlet Lake
X2: 094 - Cadmium Red
Transparency: T
Permanence: A
Colour Index Name: PG36

708 - Winsor Emerald
X1: 603 - Scarlet Lake
X2: 094 - Cadmium Red
Transparency: O
Permanence: A
Colour Index Name: PG36, PW5

184 - Cobalt Green
X1: 603 - Scarlet Lake
X2: 094 - Cadmium Red
Transparency: SO
Permanence: AA
Colour Index Name: PG26, PG50

692 - Viridian
X1: 603 - Scarlet Lake
X2: 094 - Cadmium Red
Transparency: T
Permanence: AA
Colour Index Name: PG18

183 - Cobalt Chromite
X1: 603 - Scarlet Lake
X2: 094 - Cadmium Red
Transparency: O
Permanence: AA
Colour Index Name: PG26

637 - Terre Verte
X1: 178 - Cobalt Blue
X2: 137 - Cerulean Blue
Transparency: T
Permanence: AA
Colour Index Name: PG23, PG18

599 - Sap Green
X1: 603 - Scarlet Lake
X2: 094 - Cadmium Red
Transparency: T
Permanence: A
Colour Index Name: PY110, PB15

459 - Oxide of Chronium
X1: 603 - Scarlet Lake
X2: 094 - Cadmium Red
Transparency: O
Permanence: AA
Colour Index Name: PG17

447 - Olive Green
X1: 603 - Scarlet Lake
X2: 094 - Cadmium Red
Transparency: T
Permanence: A
Colour Index Name: PY110, PBk6

347 - Lemon Yellow Hue
X1: 192 - Cobalt Violet
X2: 733 - Winsor Violet (Dioxazine)
Transparency: O
Permanence: AA
Colour Index Name: PY53

347 - Lemon Yellow Hue/Grey
X1: 192 - Cobalt Violet
X2: 733 - Winsor Violet (Dioxazine)
Transparency: O
Permanence: AA
Colour Index Name: PY53

653 - Transparent Yellow
X1: 192 - Cobalt Violet
X2: 733 - Winsor Violet (Dioxazine)
Transparency: T
Permanence: A
Colour Index Name: PY128

653 - Transparent Yellow/Grey
X1: 192 - Cobalt Violet
X2: 733 - Winsor Violet (Dioxazine)
Transparency: T
Permanence: A
Colour Index Name: PY128

730 - Winsor Yellow
X1: 192 - Cobalt Violet
X2: 733 - Winsor Violet (Dioxazine)
Transparency: ST
Permanence: A
Colour Index Name: PY74

730 - Winsor Yellow/ grey
X1: 192 - Cobalt Violet
X2: 733 - Winsor Violet (Dioxazine)
Transparency: ST
Permanence: A
Colour Index Name: PY74

086 - Cadmium Lemon/ grey
X1: 192 - Cobalt Violet
X2: 733 - Winsor Violet (Dioxazine)
Transparency: O
Permanence: A
Colour Index Name: PY35

086 - Cadmium Lemon/ grey
X1: 192 - Cobalt Violet
X2: 733 - Winsor Violet (Dioxazine)
Transparency: O
Permanence: A
Colour Index Name: PY35

025 - Bismuth Yellow
X1: 192 - Cobalt Violet
X2: 733 - Winsor Violet (Dioxazine)
Transparency: O
Permanence: A
Colour Index Name: PY184

025 - Bismuth Yellow/Grey
X1: 192 - Cobalt Violet
X2: 733 - Winsor Violet (Dioxazine)
Transparency: O
Permanence: A
Colour Index Name: PY184

294 - Green Gold
X1: 603 - Scarlet Lake
X2: 094 - Cadmium Red
Transparency: T
Permanence: A
Colour Index Name: PY129

426 - Naples Yellow Light
X1: 192 - Cobalt Violet
X2: 733 - Winsor Violet (Dioxazine)
Transparency: O
Permanence: A
Colour Index Name: PW6, PY138, PO62

426 - Naples Yellow Light/Grey
X1: 192 - Cobalt Violet
X2: 733 - Winsor Violet (Dioxazine)
Transparency: O
Permanence: A
Colour Index Name: PW6, PY138, PO62

320 - Indian Yellow Deep
X1: 192 - Cobalt Violet
X2: 733 - Winsor Violet (Dioxazine)
Transparency: T
Permanence: A
Colour Index Name: PY150

320 - Indian Yellow Deep/ Grey
X1: 192 - Cobalt Violet
X2: 733 - Winsor Violet (Dioxazine)
Transparency: T
Permanence: A
Colour Index Name: PY150

319 - Indian Yellow
X1: 192 - Cobalt Violet
X2: 733 - Winsor Violet (Dioxazine)
Transparency: T
Permanence: A
Colour Index Name: PY139, PR101

319 - Indian Yellow/Grey
X1: 192 - Cobalt Violet
X2: 733 - Winsor Violet (Dioxazine)
Transparency: T
Permanence: A
Colour Index Name: PY139, PR101

425 - Naples Yellow Deep
X1: 192 - Cobalt Violet
X2: 733 - Winsor Violet (Dioxazine)
Transparency: O
Permanence: AA
Colour Index Name: PBr24

425 - Naples Yellow Deep/Grey
X1: 192 - Cobalt Violet
X2: 733 - Winsor Violet (Dioxazine)
Transparency: O
Permanence: AA
Colour Index Name: PBr24

731 - Winsor Yellow Deep
X1: 192 - Cobalt Violet
X2: 733 - Winsor Violet (Dioxazine)
Transparency: ST
Permanence: A
Colour Index Name: PY65

731 - Winsor Yellow Deep/Grey
X1: 192 - Cobalt Violet
X2: 733 - Winsor Violet (Dioxazine)
Transparency: ST
Permanence: A
Colour Index Name: PY65

108 - Cadmium Yellow
X1: 192 - Cobalt Violet
X2: 733 - Winsor Violet (Dioxazine)
Transparency: O
Permanence: A
Colour Index Name: PY35

108 - Cadmium Yellow/ grey
X1: 192 - Cobalt Violet
X2: 733 - Winsor Violet (Dioxazine)
Transparency: O
Permanence: A
Colour Index Name: PY35

111 - Cadmium Yellow Deep
X1: 192 - Cobalt Violet
X2: 733 - Winsor Violet (Dioxazine)
Transparency: O
Permanence: A
Colour Index Name: PO20, PY35

111 - Cadmium Yellow Deep /grey - X1: 192 - Cobalt Violet
X2: 733 - Winsor Violet (Dioxazine)
Transparency: O
Permanence: A
Colour Index Name: PO20, PY35

678 - Venetian Red
X1: 708 - Winsor Emerald
X2: 459 - Oxide of Chromium
Transparency: O
Permanence: AA
Colour Index Name: PR101

657 - Transparent Maroon
X1: 721 - Winsor Green Y
X2: 692 - Viridian
Transparency: T
Permanence: A
Colour Index Name: PBr25

635 - Terra Rosa
X1: 178 - Cobalt Blue
X2: 190 - Cobalt Turquoise
Transparency: O
Permanence: AA
Colour Index Name: PR101

647 - Transparent Red Ochre
X1: 721 - Winsor Green Y
X2: 692 - Viridian
Transparency: ST
Permanence: AA
Colour Index Name: PR102

074 - Burnt Sienna
X1: 178 - Cobalt Blue
X2: 137 - Cerulean Blue
Transparency: T
Permanence: AA
Colour Index Name: PR101

285 - Gold Ochre
X1: 192 - Cobalt Violet
X2: 733 - Winsor Violet (Dioxazine)
Transparency: O
Permanence: AA
Colour Index Name: PY42

552 - Raw Sienna
X1: 178 - Cobalt Blue
X2: 137 - Cerulean Blue
Transparency: ST
Permanence: AA
Colour Index Name: PY43, PY42

744 - Yellow Ochre
X2: 137 - Cerulean Blue
X1: 178 - Cobalt Blue
Transparency: ST
Permanence: AA
Colour Index Name: PY43

676 - Vandyke Brown
X1: 178 - Cobalt Blue
X2: 137 - Cerulean Blue
Transparency: T
Permanence: A
Colour Index Name: NBr8, PBr7