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"What are Hydrochromic or Hygrochromic Color Samples?"

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"What are Hydrochromic or Hygrochromic Color Samples?"

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"What are Hydrochromic or Hygrochromic Color Samples?"

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"What are Hydrochromic or Hygrochromic Color Samples?"

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"What are Hydrochromic or Hygrochromic Color Samples?"

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"Contrast Ratio Opacity"

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"Contrast Ratio Opacity"

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What are Hydrochromic or Hygrochromic Color Samples?

Posted on Jan 27, 2026 by HunterLab

Both “hydro” coming from Greek origins for water and “hygro” coming from the Greek “hygrós” for wet or moist, tend to be used in two terms for the same optical phenomena.

ASTM E284 on standard appearance terminology prefers the name “hygrochromic”.

Posted in Coatings

What are Hydrochromic or Hygrochromic Color Samples?

Posted on Jan 27, 2026 by HunterLab

ギリシャ語で水を意味する "hydro "と、ギリシャ語で湿った、湿ったを意味する "hygrós "を語源とする "hygro "は、同じ光学現象に対して2つの用語が使われる傾向がある。

標準的な外観用語に関するASTM E284では、「ハイグロクロミック」という名称が好まれている。

Posted in Coatings

What are Hydrochromic or Hygrochromic Color Samples?

Posted on Jan 27, 2026 by HunterLab

Sowohl "hydro", das aus dem Griechischen stammt und Wasser bedeutet, als auch "hygro", das aus dem Griechischen "hygrós" für nass oder feucht stammt, werden in der Regel als zwei Begriffe für dieselben optischen Phänomene verwendet.

Die ASTM E284 zur Standardterminologie für das Erscheinungsbild bevorzugt die Bezeichnung "hygrochrom".

Posted in Coatings

What are Hydrochromic or Hygrochromic Color Samples?

Posted on Jan 27, 2026 by HunterLab

Tanto "hydro", de origen griego, que significa agua, como "hygro", del griego "hygrós", que significa húmedo o mojado, suelen utilizarse en dos términos para designar el mismo fenómeno óptico.

La norma ASTM E284 sobre terminología de apariencia estándar prefiere el nombre "higrocrómico".

Posted in Coatings

What are Hydrochromic or Hygrochromic Color Samples?

Posted on Jan 27, 2026 by HunterLab

Both “hydro” coming from Greek origins for water and “hygro” coming from the Greek “hygrós” for wet or moist, tend to be used in two terms for the same optical phenomena.

ASTM E284 on standard appearance terminology prefers the name “hygrochromic”.

Posted in Coatings

Contrast Ratio Opacity

Posted on Apr 20, 2023 by HunterLab

When used with industrial and commercial products, there is more than one definition of “opacity” as an optical property.

Contrast Ratio Opacity (OP) measurements quantify how close to opaque a near-opaque material is.

The measurement is a two-part program metric where the CIE Y (luminance or brightness) value is first measured the sample backed by a black background, followed by a second measurement of the Y value of the sample backed by a white background. The resulting fraction is expressed as Y%, calculated as follows:.

As Y Brightness is a colorimetric value calculated based on a CIE illuminant/’observer

condition, this must be specified and reported. The illuminant/observer choice will vary depending on the industry – A/2 (automotive), C/2 (historical and default choice), D65/2 (printing) and D65/10 (often used in current color measurements). As Opacity is a ratio, the results will be nearly identical for any of these illuminant/observer conditions.

Typical applications where contrast opacity is an important appearance characteristic are coating drawdowns and single sheets or layers of paper, plastic and textiles.
The primary appearance concern is lot-to-lot consistency in a material that is inherently not quite opaque.

Posted in Coatings

Contrast Ratio Opacity

Posted on Apr 20, 2023 by HunterLab

Cuando se utiliza con productos industriales y comerciales, hay más de una definición de "opacidad" como propiedad óptica.

Las mediciones de Opacidad de Relación de Contraste (OP) cuantifican lo cerca de opaco que está un material casi opaco.

La medición es un programa métrico de dos partes en el que se mide primero el valor CIE Y (luminancia o brillo) de la muestra sobre un fondo negro, seguido de una segunda medición del valor Y de la muestra sobre un fondo blanco. La fracción resultante se expresa como Y%, calculado de la siguiente manera:.

Como Y La luminosidad es un valor colorimétrico calculado a partir de un iluminante CIE/'observador

debe especificarse y notificarse. La elección del iluminante/observador variará en función del sector: A/2 (automoción), C/2 (elección histórica y por defecto), D65/2 (impresión) y D65/10 (a menudo utilizado en las mediciones de color actuales). Como la opacidad es una relación, los resultados serán casi idénticos para cualquiera de estas condiciones de iluminante/observador.

Las aplicaciones típicas en las que la opacidad de contraste es una característica de aspecto importante son las capas de revestimiento y las hojas o capas individuales de papel, plástico y textiles.
La principal preocupación de aspecto es la consistencia lote a lote en un material que intrínsecamente no es del todo opaco.

Posted in Coatings
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  • What are Hydrochromic or Hygrochromic Color Samples?
  • What are Hydrochromic or Hygrochromic Color Samples?
  • What are Hydrochromic or Hygrochromic Color Samples?
  • What are Hydrochromic or Hygrochromic Color Samples?
  • What are Hydrochromic or Hygrochromic Color Samples?
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