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Updating the contrast value #1780

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Merged
merged 5 commits into from
Jun 10, 2021
Merged

Updating the contrast value #1780

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b96c69b
Updating the contrast value
alastc May 4, 2021
a5b25bf
Rain's suggested wording
alastc May 11, 2021
e828fad
removing the SRGB reference
alastc May 11, 2021
1fa788a
Meeting updates.
alastc May 11, 2021
fce0993
Aligned understandings docs
alastc May 13, 2021
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8 changes: 5 additions & 3 deletions guidelines/terms/20/relative-luminance.html
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Original file line number Diff line number Diff line change
Expand Up @@ -12,13 +12,13 @@


  • if RsRGB <= 0.03928 then R = RsRGB/12.92 else R = ((RsRGB+0.055)/1.055) ^ 2.4
    		•
  • if RsRGB <= 0.04045 then R = RsRGB/12.92 else R = ((RsRGB+0.055)/1.055) ^ 2.4
    		•

  • if GsRGB <= 0.03928 then G = GsRGB/12.92 else G = ((GsRGB+0.055)/1.055) ^ 2.4
    		•
  • if GsRGB <= 0.04045 then G = GsRGB/12.92 else G = ((GsRGB+0.055)/1.055) ^ 2.4
    		•

  • if BsRGB <= 0.03928 then B = BsRGB/12.92 else B = ((BsRGB+0.055)/1.055) ^ 2.4
    		•
  • if BsRGB <= 0.04045 then B = BsRGB/12.92 else B = ((BsRGB+0.055)/1.055) ^ 2.4
    		•

    Expand All @@ -40,6 +40,8 @@



    Before May 2021 the value of 0.04045 in the definition was different. It was taken from an older version of the specification and has been updated. It should have no practical effect on the calculations.

    Almost all systems used today to view Web content assume sRGB encoding. Unless it
    is known that another color space will be used to process and display the content,
    Expand Down
    7 changes: 4 additions & 3 deletions techniques/general/G145.html
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    Open in desktop
    Original file line number Diff line number Diff line change
    Expand Up @@ -52,7 +52,7 @@
    • if R
      		•
      sRGB
      <= 0.03928 then
      <= 0.04045 then
      R
      = R
      sRGB
      Expand All @@ -63,7 +63,7 @@
      +0.055)/1.055) ^ 2.4
    • if G
      		•
      sRGB
      <= 0.03928 then
      <= 0.04045 then
      G
      = G
      sRGB
      Expand All @@ -74,7 +74,7 @@
      +0.055)/1.055) ^ 2.4
    • if B
      		•
      sRGB
      <= 0.03928 then
      <= 0.04045 then
      B
      = B
      sRGB
      Expand Down Expand Up @@ -146,6 +146,7 @@
    • #4 is true
      		•

      Before May 2021 the value of 0.04045 in the definition was different. It was taken from an older version of the specification and has been updated. It should have no practical effect on the calculations.

      Resources

        Expand Down
        7 changes: 4 additions & 3 deletions techniques/general/G17.html
        View file
        Open in desktop
        Original file line number Diff line number Diff line change
        Expand Up @@ -53,7 +53,7 @@
        • if R
          		•
          sRGB
          <= 0.03928 then
          <= 0.04045 then
          R
          = R
          sRGB
          Expand All @@ -64,7 +64,7 @@
          +0.055)/1.055) ^ 2.4
        • if G
          		•
          sRGB
          <= 0.03928 then
          <= 0.04045 then
          G
          = G
          sRGB
          Expand All @@ -75,7 +75,7 @@
          +0.055)/1.055) ^ 2.4
        • if B
          		•
          sRGB
          <= 0.03928 then
          <= 0.04045 then
          B
          = B
          sRGB
          Expand Down Expand Up @@ -147,6 +147,7 @@
        • #4 is true
          		•

          Before May 2021 the value of 0.04045 in the definition was different. It was taken from an older version of the specification and has been updated. It should have no practical effect on the calculations.
        • G148
          		•
        • G174
          		•
          Expand Down
          7 changes: 4 additions & 3 deletions techniques/general/G18.html
          View file
          Open in desktop
          Original file line number Diff line number Diff line change
          Expand Up @@ -58,7 +58,7 @@
          • if R
            		•
            sRGB
            <= 0.03928 then
            <= 0.04045 then
            R
            = R
            sRGB
            Expand All @@ -69,7 +69,7 @@
            +0.055)/1.055) ^ 2.4
          • if G
            		•
            sRGB
            <= 0.03928 then
            <= 0.04045 then
            G
            = G
            sRGB
            Expand All @@ -80,7 +80,7 @@
            +0.055)/1.055) ^ 2.4
          • if B
            		•
            sRGB
            <= 0.03928 then
            <= 0.04045 then
            B
            = B
            sRGB
            Expand Down Expand Up @@ -152,6 +152,7 @@
          • #4 is true.
            		•

            Before May 2021 the value of 0.04045 in the definition was different. It was taken from an older version of the specification and has been updated. It should have no practical effect on the calculations.

            Resources

              Expand Down