Teal wall art comes from water almost every time. Alpine lakes, shallow sea over sand and glacier melt all sit in the same blue green band, and that is where the color in a photograph originates. Teal made from pigment looks different from teal made from depth.
Knowing that shortens the search. If a room needs teal, the reliable subjects are lake, coast and mountain reflection, and the shade is set by how deep and how clean the water is.

Teal, turquoise and aqua are three depths of the same water
They are not separate colors so much as one color at three distances from the shore. Aqua is shallow water over pale sand, very light and slightly green. Turquoise is the next step out, brighter and more saturated. Teal is deeper still, darker and closer to blue.
Photographs of tropical beaches give the first two. Alpine and glacier lakes give the third, because suspended rock flour scatters light differently than sand does. Teal Wall Art and Aqua Wall Art separate the ends of that range, with Seafoam Wall Art covering the palest and greenest edge.

Lakes and mountain reflections carry most of the teal
The recurring subject here is a mountain lake with the peaks reflected in it. That composition doubles the color, since the water holds teal and the sky above it holds a cooler blue, and it is why so much teal artwork is also mountain artwork.
Coastal scenes are the second group, and they run warmer because sand and low sun push the palette toward gold at the edges. If you want teal without any warmth, choose an alpine lake. If you want teal that sits in a warm room, choose the coast. Lake Wall Art and Beach Wall Art hold the two groups.

What color goes with teal
Warm metals and warm neutrals. Gold, brass, tan and sand all sit opposite teal on the color wheel closely enough to look intentional, which is why teal and gold is such a common pairing in artwork and framing alike.
What does not work is another mid tone cool color. Teal beside a mid gray or a mid blue goes muddy, because none of the three has enough contrast to lead. Either go much darker with navy and charcoal, or much warmer with sand and gold. Gold Wall Art is where the warm pairing lives.
What colors do not go with teal
Lime green and mid orange are the two that reliably fail. Lime sits too close to teal on the green side, so the pair reads as a color clash rather than a scheme. Mid orange is technically the complement but at full strength it produces a sports palette rather than a room.
The fix in both cases is value rather than hue. Burnt orange and terracotta work where bright orange does not, because they are darker and duller and let the teal lead. The same logic makes olive workable where lime is not.

Teal in a bathroom or bedroom
Teal is requested most often for bathrooms and bedrooms, and those are two different jobs. A bedroom wants the darker end, deep teal and alpine lake, because it reads as calm and holds up under lamplight.
A bathroom is the harder case, and placement decides it before shade does. No canvas is engineered for a steam room, so the piece goes on the wall furthest from the shower, outside the direct spray, in a room where the extractor works. Where that holds, the lighter aqua end suits a small bright bathroom better than a dark piece. The bathroom guide covers the placement properly, and the bedroom guide covers the darker case.

Sizing teal, and why width suits water
Water subjects are horizontal by nature. A lake or a shoreline continues past both edges of the frame, so the wider the piece, the more the composition makes sense.
Horizontal work runs 1 Piece, 3 Horizontal, 4 Pop, 5 Star and 5 Pop, from 24 x 16 to 82 x 42 inches. Panoramic covers 36 x 12 to 73 x 24 and suits a shoreline better than almost any other subject. Multi panel splits also work unusually well on open water, because the surface is smooth and the seams do not interrupt any detail. A vertical piece is the exception worth considering, since a mountain reflected in a lake is one of the few water subjects that reads well tall. The multi panel comparison covers the choice.
Quick answers
Common Questions
What color goes with teal walls?
Warm neutrals and warm metals. Sand, tan, cream, gold and brass all read as intentional against teal because they sit opposite it in temperature. Deep navy and charcoal also work by contrast of value. Mid gray and mid blue are the pairings to avoid, since none of the three leads.
What is the difference between teal and turquoise wall art?
Depth. Turquoise is lighter and brighter, the color of shallow water over pale sand. Teal is darker and closer to blue, the color of deeper or colder water such as an alpine lake. Turquoise lifts a small bright room, teal grounds a larger or darker one.
What colors do not go with teal?
Lime green and bright mid orange. Lime sits too close on the green side and reads as a clash. Bright orange is the technical complement but at full strength gives a sports palette. Burnt orange, terracotta and olive are the workable versions of both, because they are darker and duller.
Does teal wall art work in a bathroom?
Placement decides this more than shade does. No canvas is engineered for a steam room, so hang it on the wall furthest from the shower, outside the direct spray, in a room with working ventilation. Where that works, the lighter aqua end suits a small bright bathroom better than a dark piece, which closes the space in.
What size teal canvas suits a living room?
Around two thirds the width of the sofa below it, so about 48 inches above a 72 inch sofa. Water subjects reward width, so a panoramic piece from 36 x 12 to 73 x 24 inches is worth considering where the wall allows, and multi panel splits work well because open water has no detail for the seams to interrupt.