Holographic "HI" Greeting Portrait

The main subject is the two-letter word "HI" presented as a suspended emblem occupying the upper two thirds of a vertical 9:16 frame, with a light, playful mood and obvious legibility goals for display use. The letters read "HI" exactly, centered horizontally and slightly elevated vertically, with generous letter spacing and a bold, rounded letterform so each stroke catches color shifts clearly. The surface of the letters shows shifting holographic texture that sequins with cyan #6EE7F9, pink #FF8CDA, violet #8A7BFF and warm gold #FFD36E, with a subtle pearlescent sheen and smooth reflective facets that suggest depth. The sky behind is a soft gradient from cool dawn blue to warm peach, calm and unobtrusive, creating gentle separation for the holographic surface. Materials include a smooth polymer sheen on the letters, a softly brushed matte for the background gradient, and a faint glasslike rim glow along letter edges. Focus is crisp on the front face of the letters with a moderate depth that keeps the letter edges and texture resolved while the background remains softly graduated. The framing stays within a 9:16 portrait crop, tight enough that the top of the letters nearly touch the upper safe margin and the lower letter stems leave breathing space for captions or a logo. Lighting reads as soft, even illumination with subtle directional luster that sculpts facets and creates gentle highlights and shadowed planes for contrast. The composition favors clean negative space around the word and a centered, slightly elevated viewpoint that feels intimate and balanced. Render this as a polished digital illustration with crisp vector-like edges and painterly iridescent texture, suitable for social media story or vertical display.