MS Excel: NVDA report {color} on {backgroundColor} problem

[surfer0627]

This case occur in NVDA2015.2 and later.
STR:

1. Open the attachment.
2. Move to cell I6.
   Press NVDA+f
   NVDA 2015.2 report: Black on Coral
   NVDA2015.1 report: black on orange
   sighted person say: black on orange
   note: Here NVDA detect-background matches with Excel Fill Color. I just curious why sighted person say "this is black on orange". Also, it seems difficult for a blind user to know that color coral is close to orange.
3. Move to cell F13.
   Press NVDA+f
   NVDA 2015.2 report: Black on Gold
   sighted person say: black on yellow
   note: In this case, Fill Color "orange" is selected.

[surfer0627]

test on backgroundColor.xlsx

[surfer0627]

Another case, NVDA indicate-backgroundColor does not match with Excel Fill Color.
Fill Color: purple
NVDA: Black on Dark Orchid
NVDA 2015.1: purple

[jcsteh]

CC @michaelDCurran, @Qchristensen.

[nvaccessAuto]

Incubated in 11382a9.

[surfer0627]

Test Next13360 in Excel2010:

1. Filled background color blue or light blue.
   NVDA got the same result "aqua-blue".
2. Filled background color red or dark red.
   NVDA got the same result "red".
   Also, if the fill-backgroundColor name would match with the formatting info?
   E.G: fill backgroundColor purple
   formatting info: blue-purple

[michaelDCurran]

We have made two choices with NVDA's color support:

• 1. The colors that NVDA reports will only use combinations of the
     following well-known color names: red, brown, orange, yellow, green,
     aqua, blue, purple, pink, white, grey and black. However, NVDA will also
     distinguish both dark and pale versions of these colors.
• 1. Where possible, NVDA will report the closest color to what is
     actually displayed on the screen, rather than how it may be labeled in a
     specific application. For example if Excel's fill color of "orange"
     actually looks "orange-yellow" rather than orange, then the user has the
     right to know this.

I think though based on the most recent examples given by @surfer0627,
our ratios for dark and pale still need to be tweaked a little.

On 16/06/2016 1:18 PM, surfer0627 wrote:

Test Next13360 in Excel2010:

1. Filled background color blue or light blue.
   NVDA got the same result "aqua-blue".
2. Filled background color red or dark red.
   NVDA got the same result "red".
   Also, if the fill-backgroundColor name would match with the formatting
   info?
   E.G: fill backgroundColor purple
   formatting info: blue-purple

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Michael Curran
Executive Director, NV Access Limited
Phone: +61 7 3149 3306
Website: http://www.nvaccess.org/
Twitter: @nvaccess
Facebook: http://www.facebook.com/NVAccess

[michaelDCurran]

Technical:

• NVDA classes a color as pale if it has a saturation of 50% or lower.
  We should change this to 60% or lower.
• We may want to add a second pale ratio (probably 30%) at which we
  combine the color with the word white, grey or black E.g. blue-grey.
• Colors with an HSV value (brightness) of 50% or below are classed by
  NVDA as dark. We should add an extra rule so that NVDA classes a color
  as "bright" if its above 75%. Anything between 75% and 50% are just normal.
• Bright pale should be replaced with light.

On 16/06/2016 1:18 PM, surfer0627 wrote:

Test Next13360 in Excel2010:

1. Filled background color blue or light blue.
   NVDA got the same result "aqua-blue".
2. Filled background color red or dark red.
   NVDA got the same result "red".
   Also, if the fill-backgroundColor name would match with the formatting
   info?
   E.G: fill backgroundColor purple
   formatting info: blue-purple

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You are receiving this because you were assigned.
Reply to this email directly, view it on GitHub
#6029 (comment),
or mute the thread
https://github.com/notifications/unsubscribe/ANf5ne-yuQtsYf0ij6fP8QDetf6qQgtmks5qMMCKgaJpZM4IsTFs.

Michael Curran
Executive Director, NV Access Limited
Phone: +61 7 3149 3306
Website: http://www.nvaccess.org/
Twitter: @nvaccess
Facebook: http://www.facebook.com/NVAccess

[nvaccessAuto]

Incubated in 6cd0eba.

[surfer0627]

Test Next13365 in Excel2010:

1. Filled background color red.
   NVDA report: bright red
2. Filled background color dark red.
   NVDA report: red
3. Filled background color light blue.
   NVDA report: bright aqua-blue
4. Filled background color light green.
   NVDA report: pale yellow-green
   Here, NVDA report two terms "bright" / "pale" for light colors.
   Notes from colors.py:

bright color (HSV saturation 100% and value 100%)
dark color (HSV saturation 100% and value 44%)
pale color (HSV saturation 50% and value 72%)