Now Playing color blueprint for Home Assistant

now_playing_color.yaml

blueprint:
  name: Now Playing Color
  description: >
    Extracts the dominant color from a media player's album art whenever the
    track changes, boosts it to a minimum brightness so it stays legible on
    lights and displays, and stores the result as a hex string (e.g. "#e0803a")
    in an input_text helper.

    Consume the stored value in other automations, e.g.:

      rgb_color: >-
        {% set h = states('input_text.your_helper') | replace('#','') %}
        [{{ h[0:2]|int(base=16) }}, {{ h[2:4]|int(base=16) }}, {{ h[4:6]|int(base=16) }}]

    PREREQUISITES:
      1. The `color_extractor` integration must be enabled.
      2. The album art host must be allow-listed in configuration.yaml, e.g.
           homeassistant:
             allowlist_external_urls:
               - "https://yt3.googleusercontent.com/"
      3. An input_text helper to store the color (max length >= 7).
  domain: automation
  input:
    media_player:
      name: Media player
      description: The player whose album art is sampled on each track change.
      selector:
        entity:
          filter:
            - domain: media_player
    color_store:
      name: Color storage helper
      description: >
        The input_text helper that receives the hex color. Its max length must
        be at least 7 to fit a value like "#e0803a".
      selector:
        entity:
          filter:
            - domain: input_text
    brightness_floor:
      name: Minimum brightness
      description: >
        Dark album art produces dim, hard-to-see colors. The extracted color is
        pushed up to at least this brightness (HSV value). 1.0 = always full
        brightness, 0.0 = never adjust.
      default: 0.85
      selector:
        number:
          min: 0.0
          max: 1.0
          step: 0.05
          mode: slider

mode: queued
max: 10

variables:
  media_player: !input media_player
  brightness_floor: !input brightness_floor

triggers:
  - trigger: state
    entity_id: !input media_player
    attribute: media_title

conditions:
  # Skip when there's no artwork to sample (idle player, stream without art).
  - condition: template
    value_template: "{{ state_attr(media_player, 'entity_picture') not in [none, ''] }}"

actions:
  # 1. Pull the dominant color out of the album art.
  - action: color_extractor.get_color
    data:
      color_extract_url: "{{ state_attr(media_player, 'entity_picture') }}"
    response_variable: art_color
    continue_on_error: true

  # 2. Normalize to 0-1 fractions, falling back to white if extraction failed.
  - variables:
      r_frac: "{{ (art_color.color[0] if art_color is defined else 255) / 255 }}"
      g_frac: "{{ (art_color.color[1] if art_color is defined else 255) / 255 }}"
      b_frac: "{{ (art_color.color[2] if art_color is defined else 255) / 255 }}"

  # 3. RGB -> HSV.
  - variables:
      cmax: "{{ [r_frac, g_frac, b_frac] | max }}"
      cmin: "{{ [r_frac, g_frac, b_frac] | min }}"
  - variables:
      delta: "{{ cmax - cmin }}"
  - variables:
      hue: >-
        {%- if delta == 0 -%}0{%- elif cmax == r_frac -%}{{ (60 * (((g_frac - b_frac) / delta) % 6)) }}{%- elif cmax == g_frac -%}{{ (60 * (((b_frac - r_frac) / delta) + 2)) }}{%- else -%}{{ (60 * (((r_frac - g_frac) / delta) + 4)) }}{%- endif -%}
      sat: "{{ 0 if cmax == 0 else delta / cmax }}"
      # The brightness floor: never let value drop below the configured minimum.
      val: "{{ [cmax, brightness_floor | float] | max }}"

  # 4. HSV -> RGB, now with the boosted value.
  - variables:
      c: "{{ val | float * sat | float }}"
      m: "{{ val | float - (val | float * sat | float) }}"
      x: "{{ (val | float * sat | float) * (1 - ((((hue | float) / 60) % 2) - 1) | abs) }}"
  - variables:
      r1: >-
        {%- if hue|float < 60 -%}{{ c }}{%- elif hue|float < 120 -%}{{ x }}{%- elif hue|float < 180 -%}0{%- elif hue|float < 240 -%}0{%- elif hue|float < 300 -%}{{ x }}{%- else -%}{{ c }}{%- endif -%}
      g1: >-
        {%- if hue|float < 60 -%}{{ x }}{%- elif hue|float < 120 -%}{{ c }}{%- elif hue|float < 180 -%}{{ c }}{%- elif hue|float < 240 -%}{{ x }}{%- elif hue|float < 300 -%}0{%- else -%}0{%- endif -%}
      b1: >-
        {%- if hue|float < 60 -%}0{%- elif hue|float < 120 -%}0{%- elif hue|float < 180 -%}{{ x }}{%- elif hue|float < 240 -%}{{ c }}{%- elif hue|float < 300 -%}{{ c }}{%- else -%}{{ x }}{%- endif -%}
  - variables:
      final_r: "{{ (((r1 | float) + (m | float)) * 255) | round(0) | int }}"
      final_g: "{{ (((g1 | float) + (m | float)) * 255) | round(0) | int }}"
      final_b: "{{ (((b1 | float) + (m | float)) * 255) | round(0) | int }}"

  # 5. Store the hex color.
  - action: input_text.set_value
    target:
      entity_id: !input color_store
    data:
      value: "{{ '#%02x%02x%02x' | format(final_r, final_g, final_b) }}"