The most common and most likely answer to this crossword clue is the 5 letter word SHADE
I've seen this crossword clue in The Times
S
H
A
D
E
More clues leading to the result SHADE
Buddy explains!

The straight part
We know that "Obscure position" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case obscure position = shade.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does SHADE mean?
SHADE noun- Darkness where light, particularly sunlight, is blocked.
- Something that blocks light, particularly in a window.
- A variety of a colour/color, in particular one obtained by adding black (compare tint).
- A subtle variation in a concept.
- An aspect that is reminiscent of something.
- A very small degree of a quantity, or variety of meaning
- A ghost or specter; a spirit.
- A postage stamp showing an obvious difference in colour/color to the original printing and needing a separate catalogue/catalog entry.
- (originally gay slang) Subtle insults.
- To shield from light.
- To alter slightly.
- To vary or approach something slightly, particularly in color.
- (of a defensive player) To move slightly from one's normal fielding position.
- To darken, particularly in drawing.
- To surpass by a narrow margin.
- To reduce (a window) so that only its title bar is visible.
- To shelter; to cover from injury; to protect; to screen.
- To present a shadow or image of; to shadow forth; to represent.