How create graphics (logos, etc ...) in HLG to works in a HLG workflow (After-effect / Premiere) ?

Here is suggestion

Step-by-Step: Designing Graphics for HLG Workflow

1. Set Up Your Project for HLG

• After Effects:

  • Go to Project Settings > Color.

  • Set Working Space to Rec.2100 HLG.

  • Enable Display Color Management if you're using a reference HDR monitor.

• Premiere Pro:

  • In Sequence Settings, choose Rec.2100 HLG as the color space.

  • Make sure your timeline and export settings match this color space.

2. Designing Graphics in HDR

• Use 32-bit color depth in After Effects for full HDR range.

• When creating logos or motion graphics:

  • Avoid pure white (255,255,255)—it can clip in HDR. Use slightly lower luminance values.

  • Use linear gradients and soft glows to take advantage of HDR’s dynamic range.

  • Keep contrast balanced—HLG is designed for broadcast, so extreme highlights should be used sparingly.

3. Importing Assets

• If you're importing logos from Illustrator or Photoshop:

  • Convert them to HDR-compatible formats (e.g., PNG with linear color profile).

  • In Photoshop, set the document to Rec.2100 HLG under Color Settings and export in 16-bit or 32-bit formats.

4. Previewing HDR Correctly

• Use an HDR-capable monitor with proper calibration.

• In Premiere, enable HDR display output under Preferences > Playback.

• In After Effects, use the Lumetri Scopes to monitor brightness levels and avoid clipping.

5. Exporting for HDR Delivery

• Use HEVC (H.265) or ProRes 422 HQ/4444 with HDR metadata.

• In Premiere:

  • Go to Export Settings > Color Space and choose Rec.2100 HLG.

  • Enable HDR Graphics White at 203 nits (standard for HLG).

Tips for Seamless Workflow

• Use Essential Graphics Panel to build reusable templates with HDR-safe colors.

• Dynamic Link between AE and Premiere preserves color space—just make sure both projects are set to HLG.

• Test your exports on multiple HDR devices to ensure consistency.