achromatic color
achromatic colour
ash-gray
ash-grey
charcoal
charcoal grey
charcoal-gray
dapple-gray
dapple-grey
dappled-gray
dappled-grey
davy's gray
davy's grey
iron blue
iron-gray
iron-grey
oxford gray
oxford grey
silver
silver grey
silver-gray
steel gray
steel grey
tattletale gray
tattletale grey
blackness
blob
blur
dampness
deadness
dimness
drizzle
dusk
emptiness
glimmer
gloaming
greyness
half-light
haze
heaviness
luminescence
luminosity
murk
nothingness
pallor
silhouette
starlight
stillness
whiteness