UTG: $37.76 (151 bb)
MP: $25.10 (100 bb)
CO: $25.00 (100 bb)
BU: $24.65 (99 bb)
SB (Hero): $26.55 (106 bb)
BB: $35.82 (143 bb)

Pre-Flop: ($0.35) Hero is SB with A♥ 4♥
2 players fold, CO raises to $0.75, 1 fold, Hero 3-bets to $2.61, 1 fold, CO calls $1.86

Flop: ($5.47) 3♥ 8♥ 6♦ (2 players)
Hero bets $5.07, CO calls $5.07

Turn: ($15.61) T♦ (2 players)
Hero bets $18.87 (all-in), CO calls $17.32 (all-in)
Is my line okay here? or I rather play more passively?