Does BS 4800 publish official Johnstone's equivalents?

No. These are computed nearest matches — every BS 4800 colour compared against every Johnstone's colour using the CIEDE2000 colour-difference formula, then ranked by distance. They are not official conversions, and where no close equivalent exists the chart says so.

How many BS 4800 colours have a close Johnstone's equivalent?

114 of the 116 BS 4800 colours in this chart have a Johnstone's equivalent within ΔE 5 — close enough that most people would struggle to tell them apart on a wall.

BS 4800 → Johnstone's conversion chart

This chart lists all 116 BS 4800 colours with their nearest Johnstone's equivalent, ranked by colour distance (ΔE, CIEDE2000 — lower is closer). 114 of 116 have an equivalent within ΔE 5, which is close enough that the difference is hard to spot once paint’s on the wall. Where the nearest Johnstone's colour is ΔE 8 or more there is no close equivalent — the nearest is still shown for reference, clearly labelled. Standard-system hex values are widely-cited sRGB approximations; physical reference chips remain authoritative for colour-critical work.

Neutrals

BS 4800 colour	Nearest Johnstone's equivalent	Code	ΔE	Match quality
22 B 15 Pearl grey	Arctic Cotton full comparison →	—	0.7	identical
00 A 01 Ash grey	Silent Smoke full comparison →	—	0.9	identical
18 B 17 Blue mink	Ghost Whisperer full comparison →	—	0.5	identical
22 B 17 Pale lavender	Jam Session full comparison →	—	1.8	near-identical
10 A 03 Dawn grey	Whiskers full comparison →	—	0.8	identical
00 A 05 Goose grey	Grey Marble full comparison →	—	1.3	near-identical
14 C 35 Iceplant green	Ancient Forest full comparison →	—	1.7	near-identical
18 B 21 Squirrel grey	Berliose full comparison →	—	2.4	near-identical
12 B 21 Mineral green	Zebra Grass full comparison →	—	1.6	near-identical
00 A 09 Flint grey	Antique Silver full comparison →	—	1.9	near-identical
18 B 25 Dark admiralty grey	Favorite Flannel full comparison →	—	1.7	near-identical
10 A 11 Charcoal grey	Gibraltar Grey full comparison →	—	2.8	near-identical
00 A 13 Storm grey	Roof Slate full comparison →	—	2.3	near-identical
08 B 29 Bitter chocolate	Chocolate Pretzel full comparison →	—	1.2	near-identical
18 B 29 Raven	Witchcraft	—	2.9	near-identical
10 B 29 Vandyke brown	Black Coffee full comparison →	—	2.7	near-identical
14 C 40 Moss green	Midnight Mountain full comparison →	—	2.9	near-identical
00 E 53 Black	Starless Sky full comparison →	—	3.9	very close

Warm Creams

BS 4800 colour	Nearest Johnstone's equivalent	Code	ΔE	Match quality
04 B 15 Rosepetal	Milk Pudding full comparison →	—	0.9	identical
08 B 17 Honey beige	Warm Blanket full comparison →	—	1.2	near-identical
10 B 17 Oatmeal	Lovely Linen full comparison →	—	1.9	near-identical
08 B 21 Antelope	Cuppa Coffee full comparison →	—	1.3	near-identical
10 C 35 Wheat	Warm Hay full comparison →	—	1.6	near-identical

Yellows

BS 4800 colour	Nearest Johnstone's equivalent	Code	ΔE	Match quality
00 E 55 White	Cotton Tail	—	1.2	near-identical
10 B 15 Creamy white	Spice Ivory	—	1.4	near-identical
12 B 15 Sea foam	Antique Cream full comparison →	—	1.3	near-identical
10 C 31 Ivory	Sausalito full comparison →	—	1.0	identical
12 C 31 Light yellow	Oh Dahling full comparison →	—	0.8	identical
10 E 49 Pale primrose	Lemon Daze full comparison →	—	1.4	near-identical
10 C 33 Vanilla	Demeter full comparison →	—	1.0	near-identical
12 B 17 Green Mist	Pickling Spice full comparison →	—	0.9	identical
12 C 33 Green haze	True To You full comparison →	—	1.9	near-identical
10 E 50 Light grapefruit	Canary Yellow full comparison →	—	1.7	near-identical
12 D 41 Green	Goody Gumdrop full comparison →	—	1.1	near-identical
10 E 55 Canary Yellow	Flirtatious full comparison →	—	1.4	near-identical
12 E 51 Pale lime	Slap Happy full comparison →	—	3.1	very close
08 E 51 Golden yellow	Mango Margarita	—	4.1	very close
10 E 53 Sunflower yellow	Yellow Diamond full comparison →	—	2.1	near-identical
12 D 43 Greengage	Do Not Disturb full comparison →	—	2.3	near-identical
12 C 37 Green	Amphibious full comparison →	—	2.0	near-identical
12 D 45 Dark laurel	Evernia full comparison →	—	2.3	near-identical
12 C 39 Ivy green	Grape Leaves full comparison →	—	2.7	near-identical

Oranges

BS 4800 colour	Nearest Johnstone's equivalent	Code	ΔE	Match quality
04 C 31 Pink	La Minuet full comparison →	—	1.3	near-identical
08 B 15 Magnolia	Oasis Sand full comparison →	—	1.0	identical
08 C 31 Honeysuckle cream	Biscuit Tin full comparison →	—	1.0	near-identical
04 B 17 Dusty pink	Makeover full comparison →	—	0.9	identical
06 C 33 Peach	Deep Cream full comparison →	—	1.6	near-identical
08 C 33 Beige	York Ivory full comparison →	—	1.0	near-identical
06 E 50 Mellow apricot	Feel The Burn full comparison →	—	2.9	near-identical
08 D 41 Yellow	Gold Buff full comparison →	—	2.6	near-identical
06 C 35 Light orange	Orange Clay full comparison →	—	2.2	near-identical
06 E 51 Mandarin orange	Copper River full comparison →	—	3.0	very close
08 C 35 Fudge	Drops Of Honey full comparison →	—	1.9	near-identical
04 B 21 Sable	Iris Mauve full comparison →	—	0.8	identical
08 E 55 Orange	Sunblaze	—	6.8	close

Reds

BS 4800 colour	Nearest Johnstone's equivalent	Code	ΔE	Match quality
04 E 49 Rose pink	Pink Sangria full comparison →	—	1.9	near-identical
02 C 33 Lupin pink	Blushing Senorita full comparison →	—	1.3	near-identical
04 C 33 Orchid pink	Fragrant Bouquet full comparison →	—	1.1	near-identical
04 E 51 Salmon red	Flower Of Youth full comparison →	—	3.9	very close
02 C 37 Clover pink	Rich Enticement full comparison →	—	3.1	very close
04 C 37 Autumn brown	Earth Rose full comparison →	—	0.9	identical
04 E 55 Red	Wet Coral full comparison →	—	2.4	near-identical
04 E 53 Poppy	Wet Coral full comparison →	—	3.2	very close
04 D 44 Misty red	Indian Paintbrush full comparison →	—	2.6	near-identical
04 E 56 Carnival red	Burnt Red full comparison →	—	1.3	near-identical
04 D 45 Dark cherry	Burgundy Noir full comparison →	—	1.6	near-identical
02 C 39 Victoria plum	Dusky Berry full comparison →	—	3.0	very close
04 C 39 Brick red	Brick Red full comparison →	—	1.9	near-identical
04 E 58 Purple	Romantic Evening full comparison →	—	3.2	very close
06 C 40 Brown	Bison Stampede full comparison →	—	2.7	near-identical

Pinks

BS 4800 colour	Nearest Johnstone's equivalent	Code	ΔE	Match quality
24 C 33 Pale lilac	Budding Flower full comparison →	—	1.2	near-identical
02 C 40 Deep plum	Acai Berry full comparison →	—	3.4	very close

Purples

BS 4800 colour	Nearest Johnstone's equivalent	Code	ΔE	Match quality
24 E 53 Purple	Bermuda Onion full comparison →	—	2.8	near-identical
24 C 39 Regal violet	Magic Magenta full comparison →	—	4.0	very close

Blues

BS 4800 colour	Nearest Johnstone's equivalent	Code	ΔE	Match quality
20 C 33 Porcelain blue	Cold Iron full comparison →	—	0.8	identical
22 D 41 Purple	Sweet Lavender full comparison →	—	1.9	near-identical
20 D 41 Powder blue	Valor full comparison →	—	1.1	near-identical
18 C 35 Corvette blue	Blue By You full comparison →	—	2.5	near-identical
20 E 51 Cornflower blue	Ocean Horizon full comparison →	—	1.5	near-identical
22 C 37 Purple heather	Spring Thistle	—	5.5	close
20 C 37 Larkspur blue	Evening Hush full comparison →	—	1.9	near-identical
18 E 51 Delphinium Blue	Water Fight full comparison →	—	3.6	very close
20 E 53 Blue	Sapphire Sky full comparison →	—	2.2	near-identical
22 D 45 Deep purple	Cleopatra's Gown	—	4.2	very close
20 D 45 Sapphire blue	Blue Odyssey full comparison →	—	2.8	near-identical
20 E 56 Blue	Teeny Bikini full comparison →	—	1.6	near-identical
18 C 39 Fathom blue	Dark Summit full comparison →	—	2.9	near-identical
18 E 53 Tartan blue	Atlantic Kingdom full comparison →	—	0.8	identical
20 C 40 Duchess blue	Wild Hyacinth full comparison →	—	1.5	near-identical

Teals

BS 4800 colour	Nearest Johnstone's equivalent	Code	ΔE	Match quality
18 E 49 Crystal blue	Salinity full comparison →	—	0.8	identical
18 E 50 Ribbon blue	Everglade Mist full comparison →	—	1.4	near-identical
16 C 33 Duckegg	Sea Sprite full comparison →	—	1.3	near-identical
16 E 50 Turquoise	Salt Scrub full comparison →	—	2.2	near-identical
16 C 37 Reef green	Palmetto	—	4.3	very close
16 E 53 Aquamarine	Riviera Paradise full comparison →	—	1.3	near-identical
16 D 45 Dark jade	Tahitian Treat full comparison →	—	2.1	near-identical

Greens

BS 4800 colour	Nearest Johnstone's equivalent	Code	ΔE	Match quality
18 C 31 Ice blue	Silver Feather full comparison →	—	1.0	identical
14 C 31 Glacial green	New Seedling full comparison →	—	0.8	identical
14 E 49 Light green	Peppermint Patty full comparison →	—	2.2	near-identical
14 E 50 Green	Mountain Mint full comparison →	—	2.4	near-identical
14 E 51 Bright green	Aragon Green full comparison →	—	2.6	near-identical
12 E 53 Linden green	Funky Frog full comparison →	—	1.4	near-identical
12 E 55 Green	Grassy Meadow full comparison →	—	3.9	very close
14 E 53 Irish green	Congo Green	—	4.5	very close
14 C 39 Holly green	Dark Green full comparison →	—	2.8	near-identical

Browns & Earths

BS 4800 colour	Nearest Johnstone's equivalent	Code	ΔE	Match quality
06 D 43 Mid tan	Root Ginger full comparison →	—	1.7	near-identical
06 C 37 Leather brown	Brown Clay full comparison →	—	2.6	near-identical
10 D 43 Golden maize	Grass Daisy full comparison →	—	1.9	near-identical
06 E 56 Maori brown	Grounded full comparison →	—	1.4	near-identical
08 C 37 Caramel	Cool Copper full comparison →	—	1.9	near-identical
08 B 25 Beaver brown	Derby Brown full comparison →	—	2.2	near-identical
10 D 45 French mustard	Muted Copper full comparison →	—	1.9	near-identical
06 D 45 Teak	Muted Copper full comparison →	—	1.9	near-identical
10 B 25 Turtle green	Thunderstruck full comparison →	—	2.2	near-identical
06 C 39 Saddle brown	Chocolate River full comparison →	—	1.1	near-identical
10 C 39 Dark olive	Olive Wood full comparison →	—	2.6	near-identical