Well, as others have said, it's going to depend heavily on your individual preferences. With that being said, I've been building my own capsule wardrobe for a while, so dunno if this will be helpful but here's what I've got.
3 polo necks
Light blue (M&S)
Navy (M&S)
Grey (& other stories)
4 shirts
CK silky grey
M&S Light blue 3/4 sleeve
White shirt with black cuffs and collar
Black high neck Victorian style ruffle blouse
2 jeans (denim, pink)
CK blue denim skinny
Tommy Hilfiger pink denim skinny
2 black trousers (slim fit)
DKNY
Burberry
2 wide leg trousers
Topshop peach chinos
M&S Navy chinos
Jackets
1 fitted grey CK blazer
2 day cardigans
White Jane Norman Chanel style cream with black trim
Hollister grey waterfall thick knit
2 evening cardigans
Black cropped bolero style with red buttons
Calvin Klein grey lightweight waterfall
2 short sleeve marinieres (French style stripey tops)
2 long sleeve marinieres (French style stripey tops)
2 sweaters
Calvin Klein grey w black trim lightweight V neck
Lime linen ( & other stories)
2 vest tops (for layering)
2 blouses
DKNY black and white silky long sleeved
Red floral short sleeved blouse
2 pairs shorts
2 evening dresses
Black CK midi 3/4 sleeve
Cos blue short sleeve
2 day dresses
Grey maxi (& other stories)
Blue midi (Cos)
2 skirts
Grey pencil skirt (midi)
Black Burberry pleated (midi)
1 pair black stilettos
1 pair heels brown CK ankle boots
1 pair flat ankle boots
2 pairs pointed toe ballet flats (red,navy)
1 pair brown brogues
1 pair casual CK sneakers
1 pair block heels
1 pair M & S low wedge sandals
1 brown leather belt
1 red leather belt
1 black belt
1 tan cinch belt
2 tote bags
Moschino red tote
CK roomy camel tote
2 evening bags
Red Moschino clutch
Cream quilted DKNY
2 handbags
Blue John Rocha
Ben de lisi multi coloured structured leather
1 red leather rucksack
3 lightweight silky scarfs
Black and white
Blue and gold
Brown and cream
1 M&S burgundy winter scarf
1 fur stole
1 navy Ck coat
1 navy trenchcoat
1 leather jacket
1 brown Zara shearling vest
Indoor wear
2 pairs leggings
CK black
CK grey
Tops
Grey CK muscle back
Black CK relaxed fit T-Shirt
2 dressing gowns
Stripey CK linen robe
Black silky gown