[libreoffice-design] Contrast issues (was: Some Ideation on LibreOffice Logo Improvements)

On 23/01/2016 23:45, Heiko Tietze wrote:
> On Saturday, 23 January 2016 23:02:34 CET Christoph Noack wrote:
> > What are your initial thoughts, pros, cons, or ideas? I would really
> > appreciate your feedback - and your questions. And, if needed, I'll set
> > up a dedicated whiteboard for that topic ...?Thanks!
> The logo is perfect, especially in monochrome with the enlarged character 
> spacing for the TDF letters. 
> I'm not a fan of the bright green (the old branding color was nicer) in 
> particular combined with the white font. And the lemons could be attributed as 
> sour rather than fresh.  

There are contrast issues in some of the logos at
<https://wiki.documentfoundation.org/images/2/25/LibreOffice_LogoImprovements2016_Ideation.png>.
(The criterion is use for contrast comes from Success Criterion 1.4.3 in
the W3C's Web Content Accessibility Guidelines (WCAG) 2.0:
<https://www.w3.org/TR/2008/REC-WCAG20-20081211/#visual-audio-contrast-contrast>. 
I used the Colour Contrast Analyser from
<https://www.paciellogroup.com/resources/contrastanalyser/> to check the
contrast.)

For example, in the logos above the first horizontal line:
* in the logo with the green background, the contrast varies on where
you check (due to the gradient):
** close to the "L": #FFFFFF on #36B923: contrast ratio of 2.59 to 1
** close to the other end of the name: #FFFFFF on #18A203: contrast
ratio of 3.38 to 1
* in the logo with the grey background, the contrast is OK: #FFFFFF on
#666666: contrast ratio of 5.74 to 1

The green letters on a white background also have insufficient contrast.
(Unfortunately, I can't continue checking; the image with the logos no
longer diplays in my browser.)

This is obviously not a new issue. For example, the splash screen in
LibreOffice 4.0.4.2 (the version on my PC) also has white text on a
green background with a contrast ratio of 2.86 to 1, which is much too
low, even for big letters.

Best regards,

Christophe

> However, I'm not a designer, so don't care too much.
> > From the UX POV the colored text in IconsInclMotif are questionable. In 
> particular the yellow is hard to read. And the green of the logo interferes 
> with Calc's green.
> The wallpaper feels a little bit untidy and irritating. To me, the dog-ear 
> triangle from the logo without the page doesn't work. Last but not least the 
> bugs have a friendly but warning color, very nice. Maybe you can make the bugs 
> a little bit cuter, laydbugs perhaps? :-)
>
> Cheers,
> Heiko


-- 
Christophe Strobbe
Akademischer Mitarbeiter
Responsive Media Experience Research Group (REMEX)
Hochschule der Medien
Nobelstraße 10
70569 Stuttgart
Tel. +49 711 8923 2749

“It is possible to make a living making free software for freedom 
instead of closed-source proprietary malware for cops.” 
Jacob Appelbaum, 
<http://dissenter.firedoglake.com/2012/12/28/jacob-appelbaum-on-resisting-the-surveillance-state/>



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