a:srgbClr (RGB Color)

Specifies a color using RGB (Red-Green-Blue) model with 6-digit hexadecimal notation.

Parent elements

Child elements

## Description `a:srgbClr` defines a color using the **sRGB (standard RGB) color model**. It is defined in **ECMA-376 Part 1 §20.1.2.3.32**. The color value is a **6-digit hexadecimal string** in the format `RRGGBB` where: - **RR** = Red component (00–FF) - **GG** = Green component (00–FF) - **BB** = Blue component (00–FF) For example: - `000000` = Black - `FFFFFF` = White - `FF0000` = Pure Red - `00FF00` = Pure Green - `0000FF` = Pure Blue Child elements allow color modifications (transparency, tint, shade, etc.) to be applied to the base RGB value. ## Attributes | Attribute | Type | Possible Values | Description | |---|---|---|---| | `val` | `ST_HexColor` | 6-digit hex string (000000–FFFFFF) | RGB color value in hex notation. | ## Examples ### Pure Red Color

<a:srgbClr val="FF0000"/>

using DocumentFormat.OpenXml.Drawing;

var redColor = new RgbColorModelHex { Val = "FF0000" };

### RGB Color with Alpha Transparency (50% opacity)

<a:srgbClr val="0070C0">
  <a:alpha val="50000"/>
</a:srgbClr>

var blueColor = new RgbColorModelHex { Val = "0070C0" };
blueColor.Append(new Alpha { Val = 50000 });  // 50% opacity (0–100000)

### RGB Color with Tint Modification (20% lighter)

<a:srgbClr val="4472C4">
  <a:tint val="20000"/>
</a:srgbClr>

var tintedColor = new RgbColorModelHex { Val = "4472C4" };
tintedColor.Append(new Tint { Val = 20000 });  // 20% lighter (0–100000)

### RGB Color with Shade Modification (30% darker)

<a:srgbClr val="FF9900">
  <a:shade val="30000"/>
</a:srgbClr>

var shadedColor = new RgbColorModelHex { Val = "FF9900" };
shadedColor.Append(new Shade { Val = 30000 });  // 30% darker (0–100000)

## Notes - The `val` attribute is a **case-insensitive 6-digit hex string** (use uppercase for readability). - Color modifications (`a:alpha`, `a:tint`, `a:shade`) use values 0–100000 where 50000 = 50%. - Tint (0–100000) blends the color toward white; shade blends toward black. - Common color references: - Theme colors use `a:schemeClr` instead; raw RGB uses `a:srgbClr`. - For predefined named colors, use color names via application-specific mappings. - Child modification elements are optional; omit if no modifications are needed.