subtle

US /ˈsʌt̬.əl/
UK /ˈsʌt̬.əl/
"subtle" picture
1.

sutil, delicado, imperceptible

so delicate or precise as to be difficult to analyze or describe

:
The painting had a subtle blend of colors.
La pintura tenía una mezcla sutil de colores.
There was a subtle change in his expression.
Hubo un cambio sutil en su expresión.
2.

astuto, perspicaz, ingenioso

making use of clever and indirect methods to achieve something

:
He used a subtle approach to persuade them.
Utilizó un enfoque sutil para persuadirlos.
Her subtle hints were finally understood.
Sus sutiles indirectas finalmente fueron comprendidas.