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  2. List of RAL colours - Wikipedia

    en.wikipedia.org/wiki/List_of_RAL_colours

    Green blue: RAL 5002: Ultramarine blue: RAL 5003: Sapphire blue: RAL 5004: Black blue: RAL 5005: Signal blue: RAL 5007: Brilliant blue: RAL 5008: Grey blue: RAL 5009: Azure blue: RAL 5010: Gentian blue: U8 line of the Berlin U-Bahn: RAL 5011: Steel blue: RAL 5012: Light blue: U7 line of the Berlin U-Bahn: RAL 5013: Cobalt blue: Deutsche ...

  3. RAL colour standard - Wikipedia

    en.wikipedia.org/wiki/RAL_colour_standard

    RAL Colours logo. RAL is a colour management system used in Europe that is created and administered by the German RAL gGmbH [1] (RAL non-profit LLC), which is a subsidiary of the German RAL Institute . In colloquial speech, RAL refers to the RAL Classic system, mainly used for varnish and powder coating, but now plastics as well. Approved RAL ...

  4. Wikipedia : WikiProject UK Railways/Colours list

    en.wikipedia.org/wiki/Wikipedia:WikiProject_UK...

    light blue 5fc9f3: Piccadilly–Bury yellow edb600: East Didsbury–Rochdale pink ef80b1: East Didsbury–Shaw (peak only) brown 867864: The Trafford Centre–Deansgate red e20006: Manchester Airport–Victoria dark blue 1769b4

  5. British Rail corporate liveries - Wikipedia

    en.wikipedia.org/wiki/British_Rail_corporate...

    The classic Rail Blue colours; a Class 40 locomotive (no. 40128) with blue and grey coaching stock at Llandudno in 1982 The history of British Rail's corporate liveries is quite complex. Although the organisation was associated with Rail Blue from the mid-1960s to the 1980s, a number of other schemes were also used, especially when it was split ...

  6. Standard illuminant - Wikipedia

    en.wikipedia.org/wiki/Standard_illuminant

    CIE Publication 15:2018 introduces nine new illuminants representing several white LEDs with CCTs ranging from 2700~6600 K. [28] LED-B1 through B5 define standard LED illuminants with phosphor-converted blue light. LED-BH1 defines a blend of phosphor-converted blue and a red LED. LED-RGB1 defines the white light produced by a tricolor LED mix ...

  7. Visible spectrum - Wikipedia

    en.wikipedia.org/wiki/Visible_spectrum

    An example of this phenomenon is when clean air scatters blue light more than red light, and so the midday sky appears blue (apart from the area around the Sun which appears white because the light is not scattered as much). The optical window is also referred to as the "visible window" because it overlaps the human visible response spectrum.

  8. Pipe marking - Wikipedia

    en.wikipedia.org/wiki/Pipe_marking

    Light brown Signal red Quenching oil ... RAL Colour Code Colour Steam 2114 9006 White aluminium Air 2123 5012 Light blue Water 2138 6010 Grass green Gas 2149 ...

  9. RGB color model - Wikipedia

    en.wikipedia.org/wiki/RGB_color_model

    The RGB color model is an additive color model [1] in which the red, green, and blue primary colors of light are added together in various ways to reproduce a broad array of colors. The name of the model comes from the initials of the three additive primary colors, red, green, and blue. [2]