CSS - border-block-end-color Property

An element's logical block-end border color is determined by the border-block-end-color CSS property, and it is converted into a physical border color depending on the writing mode, directionality, and text orientation of the element.

Depending on the values provided for the element's writing-mode, direction, and text-orientation, its behavior corresponds to either border-top-color, border-right-color, border-bottom-color, or border-left-color.
The other border colors of the element are defined by related attributes border-block-start-color, border-inline-start-color, and border-inline-end-color.

Possible value

<color> - The color of the border.

Syntax

border-block-end-color = <color> | <image-1D>

Applies to

All the HTML elements.

CSS border-block-end-color - Using HEX color

The following example demonstrates the usage of border-block-end-color property with HEX color value.

<html>
<head>
<style>
   .container {
      background-color: #0c97ed;
      width: 400px;
      height: 400px;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 20px;
   }
   .demo-border {
      writing-mode: horizontal-tb;
      border: 8px dashed #111211;
      border-block-end-color: white;
      border-block-end-style: solid;
      padding: 15px;
      margin: 10px;
      text-align: center;
      font-family: 'Arial', sans-serif;
      font-size: 20px;
      color: #f5f4f0;
}
</style>
</head>
<body>
<div class="container">
<p class="demo-border">A example with border-block-end-color property.</p>
</div>
</body>
</html>

CSS border-block-end-color - Using RGB color

The following example demonstrates the usage of border-block-end-color property with RGB color value.

<html>
<head>
<style>
   .container {
      background-color: #f2f2eb;
      width: 400px;
      height: 400px;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 20px;
   }
   .demo-border {
      writing-mode: horizontal-tb;
      border: 8px double #111211;
      border-block-end-color: rgb(230, 230, 94);
      border-block-end-style: solid;
      padding: 15px;
      margin: 10px;
      text-align: center;
      font-family: 'Arial', sans-serif;
      font-size: 20px;
      color: black;
}
</style>
</head>
<body>
<div class="container">
<p class="demo-border">A example with border-block-end-color property.</p>
</div>
</body>
</html>

CSS border-block-end-color - Using HSL color

The following example demonstrates the usage of border-block-end-color property with HSL color value.

<html>
<head>
<style>
   .container {
      background-color: #c6f5d3;
      width: 400px;
      height: 400px;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 20px;
   }
   .demo-border {
      writing-mode: horizontal-tb;
      border: 8px double #111211;
      border-block-end-color: hsl(120, 70%, 50%);
      border-block-end-style: solid;
      padding: 15px;
      margin: 10px;
      text-align: center;
      font-family: 'Arial', sans-serif;
      font-size: 20px;
      color: black;
}
</style>
</head>
<body>
<div class="container">
<p class="demo-border">A example with border-block-end-color property.</p>
</div>
</body>
</html>

CSS border-block-end-color - Using named color

The following example demonstrates the usage of border-block-end-color property with named color value.

<html>
<head>
<style>
   .container {
      background-color: #c6e1f5;
      width: 400px;
      height: 400px;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 20px;
   }
   .demo-border {
      writing-mode: horizontal-tb;
      border: 8px dashed #111211;
      border-block-end-color: blue;
      border-block-end-style: solid;
      padding: 15px;
      margin: 10px;
      text-align: center;
      font-family: 'Arial', sans-serif;
      font-size: 20px;
      color: black;
}
</style>
</head>
<body>
<div class="container">
<p class="demo-border">A example with border-block-end-color property.</p>
</div>
</body>
</html>

CSS border-block-end-color - Using RGBA color

The following example demonstrates the usage of border-block-end-color property with RGBA color value and vertical writing mode.

<html>
<head>
<style>
   .container {
      background-color: #c6e1f5;
      width: 400px;
      height: 400px;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 20px;
   }
   .demo-border {
      writing-mode: vertical-rl;
      border: 4px double #111211;
      border-block-end-color: rgba(255, 0, 0, 0.7); 
      border-block-end-style: solid;
      padding: 15px;
      margin: 10px;
      text-align: center;
      font-family: 'Arial', sans-serif;
      font-size: 20px;
      color: black;
   }
</style>
</head>
<body>
<div class="container">
<p class="demo-border">An example with border-block-end-color property.</p>
</div>
</body>
</html>