[css-color-hdr] Reference ranges encompas BT.2100 gamut, w3c#11710

Author: svgeesus

css-color-hdr-1/Overview.bs

@@ -963,7 +963,7 @@ Predefined color spaces for HDR: {#predefined-HDR}
 		<tr>
 			<th>Percent reference range</th>
 			<td>for Jz: 0% = 0.0, 100% = 1.0<br>
-			for az and bz: -100% = -1.0, 100% = 1.0</td>
+			for az and bz: -100% = -0.21, 100% = 0.21</td>
 		</tr>
 	</table>
 
@@ -1000,6 +1000,26 @@ Predefined color spaces for HDR: {#predefined-HDR}
 	measured from the positive a<sub>z</sub> axis,
 	towards the positive b<sub>z</sub> axis.
 
+	It has the following characteristics:
+
+	<table>
+		<thead><td></td><td>x</td><td>y</td></thead>
+		<tr><th>White chromaticity</th><td colspan="2">[=D65=]</td></tr>
+		<tr><th>Transfer function</th><td colspan="2">Perceptual Quantizer</td></tr>
+		<tr><th>Peak white luminance</th><td colspan="2">10,000 cd/m²</td></tr>
+		<tr><th>Black luminance</th><td colspan="2">0.001 cd/m²</td></tr>
+		<tr><th>Image state</th><td colspan="2">display-referred</td></tr>
+		<tr>
+			<th>Percentages</th>
+			<td  colspan="2">Allowed for Jz and Cz</td>
+		</tr>
+		<tr>
+			<th>Percent reference range</th>
+			<td>for Jz: 0% = 0.0, 100% = 1.0<br>
+			for Cz: -100% = -0.26, 100% = 0.26</td>
+		</tr>
+	</table>
+
 	<div class="example">
 		This color represents the sRGB color "lime" in ''Jzazbz''
 		<pre>
@@ -1074,7 +1094,7 @@ Converting JzCzHz colors to Jzazbz  colors</h4>
 		<tr>
 			<th>Percent reference range</th>
 			<td>for I: 0% = 0.0, 100% = 1.0<br>
-			for Ct and Cp: -100% = -1.0, 100% = 1.0</td>
+			for Ct and Cp: -100% = -0.5, 100% = 0.5</td>
 		</tr>
 	</table>