HA Blueprint to match color temperature of lights to the sun

match-color-temp-kelvin.yaml

blueprint:
  name: Match Outside Colour Temperature Kelvin
  description: When a light turns on or the sun elevation changes match the outside
    colour temperature. It will apply to any bulb that supports color temperature.
    It triggers whenever a bulb turns on, on sun elevation changes and every 5 minutes.
  domain: automation
  input:
    target_lights:
      name: Lights
      description: The primary lights to be controlled
      selector:
        entity:
          domain: light
          multiple: true
    min_color_temp:
      name: Coolest Color Temperature
      description: The coolest color your bulbs will be set to
      default: 4000
      selector:
        number:
          min: 1500
          max: 4500
    max_color_temp:
      name: Warmest Color Temperature
      description: The warmest color your bulbs will be set to
      default: 2202
      selector:
        number:
          min: 1500
          max: 4500
    brightness_action:
      name: Brightness
      description: When a device turns on its color temperature will be set, this
        may interfere with the brightness, this action will run half a second later
        to set the light's brightness.
      selector:
        action: {}
      default:
      - service: light.turn_on
        data:
          brightness: '{{max(trigger.to_state.attributes.brightness,2)}}'
        target:
          entity_id: '{{trigger.entity_id}}'
        alias: Default - Set light to its original brightness, don't use brightness
          1 as it causes issues with some bulbs
  source_url: https://gist.github.com/HarvsG/cc86381dc99169159d6d4cd870c36e46
variables:
  target_lights: !input target_lights
  target_on_lights: '{{states.light | selectattr(''state'',''eq'',''on'') | selectattr(''attributes.supported_color_modes'',''match'',".*color_temp.*")
    | map(attribute=''entity_id'') | select("in",target_lights) | list }}'
  min_color_temp: !input min_color_temp
  max_color_temp: !input max_color_temp
  color_temp: '{{ [([(((4791.67 - 3290.66/(1 + 0.222 * ([([0,state_attr(''sun.sun'',
    ''elevation'')]|max),90]|min**0.81))))|int),max_color_temp]|max),min_color_temp]|min}}'
trigger:
- platform: state
  entity_id: !input target_lights
  to: 'on'
  id: single_light_on
- platform: state
  entity_id:
  - sun.sun
  attribute: elevation
  id: elevation_change
- platform: time_pattern
  minutes: '5'
  id: every_5_min
condition:
- condition: template
  value_template: '{{ (states.light | selectattr(''state'',''eq'',''on'') | map(attribute=''entity_id'')
    | list)!= [] }}'
action:
- choose:
  - conditions:
    - condition: trigger
      id: single_light_on
    sequence:
    - service: light.turn_on
      data:
        kelvin: '{{color_temp}}'
      target:
        entity_id: '{{trigger.entity_id}}'
    - delay:
        milliseconds: 500
    - choose:
      default: !input brightness_action
  - conditions:
    - condition: or
      conditions:
      - condition: trigger
        id: every_5_min
      - condition: trigger
        id: elevation_change
    sequence:
    - service: light.turn_on
      data:
        kelvin: '{{color_temp}}'
        transition: 5
      target:
        entity_id: '{{target_on_lights}}'
mode: parallel