Charcoal Concrete

#31333E

#545969

Text readability

Ui NeutralDark

Charcoal Concrete is a neutral and dark 2-colour linear gradient that runs from charcoal (#31333E) to grey (#545969) at 160°. It suits subtle surfaces and app backgrounds and dark-mode interfaces and footers. White text reads best on it, at a contrast ratio of 9.4:1 against the gradient’s average colour (AAA). Check every point, not just the average →

CSS

background: linear-gradient(160deg, #31333E, #545969);

Tailwind

bg-[linear-gradient(160deg,#31333E,#545969)]

Figma token

{
    "charcoal-concrete": {
        "value": "linear-gradient(160deg, #31333E 0%, #545969 100%)",
        "type": "color"
    }
}

Charcoal Concrete gradient for SwiftUI, Flutter, Android and more

The same gradient, same direction, ready for your app or design system.

let charcoalConcreteGradient = LinearGradient(
    colors: [
        Color(red: 0.192, green: 0.2, blue: 0.243),
        Color(red: 0.329, green: 0.349, blue: 0.412)
    ],
    startPoint: UnitPoint(x: 0.318, y: 0),
    endPoint: UnitPoint(x: 0.682, y: 1)
)

// Usage
Rectangle().fill(charcoalConcreteGradient)

val charcoalConcreteColors = listOf(Color(0xFF31333E), Color(0xFF545969))

Modifier.drawBehind {
    drawRect(
        Brush.linearGradient(
            colors = charcoalConcreteColors,
            start = Offset(size.width * 0.318f, size.height * 0f),
            end = Offset(size.width * 0.682f, size.height * 1f)
        )
    )
}

<!-- res/drawable/charcoal-concrete_gradient.xml -->
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">
    <gradient
        android:angle="270"
        android:startColor="#31333E"
        android:endColor="#545969"
        android:type="linear" />
</shape>
<!-- Android only takes multiples of 45°: 160deg in CSS is 290°, rounded to 270°. -->

const charcoalConcreteGradient = LinearGradient(
    begin: Alignment(-0.364, -1),
    end: Alignment(0.364, 1),
    colors: [Color(0xFF31333E), Color(0xFF545969)],
);

// Usage
Container(decoration: const BoxDecoration(gradient: charcoalConcreteGradient))

import { LinearGradient } from 'expo-linear-gradient';

<LinearGradient
  colors={['#31333E', '#545969']}
  start={{ x: 0.318, y: 0 }}
  end={{ x: 0.682, y: 1 }}
  style={{ flex: 1 }}
/>

<svg xmlns="http://www.w3.org/2000/svg" width="1200" height="630" viewBox="0 0 1200 630">
  <defs>
    <linearGradient id="charcoal-concrete" x1="0.318" y1="0" x2="0.682" y2="1">
      <stop offset="0%" stop-color="#31333E" />
      <stop offset="100%" stop-color="#545969" />
    </linearGradient>
  </defs>
  <rect width="100%" height="100%" fill="url(#charcoal-concrete)" />
</svg>

:root {
  --charcoal-concrete-1: #31333E;
  --charcoal-concrete-2: #545969;
  --charcoal-concrete-angle: 160deg;
  --charcoal-concrete: linear-gradient(var(--charcoal-concrete-angle), var(--charcoal-concrete-1), var(--charcoal-concrete-2));
}

.hero {
  background: var(--charcoal-concrete);
}

$charcoal-concrete-1: #31333E;
$charcoal-concrete-2: #545969;
$charcoal-concrete: linear-gradient(160deg, $charcoal-concrete-1, $charcoal-concrete-2);

@mixin charcoal-concrete-bg {
  background: $charcoal-concrete-1;
  background: $charcoal-concrete;
}

Colours in the Charcoal Concrete gradient

Stop	Name	HEX	RGB	HSL
1	Charcoal	`#31333E`	`rgb(49, 51, 62)`	`hsl(231, 12%, 22%)`
2	Grey	`#545969`	`rgb(84, 89, 105)`	`hsl(226, 11%, 37%)`

Charcoal Concrete gradient in use

Build something beautifulA hero section on the Charcoal Concrete gradientGet started

Button

Card accentAs a border or progress bar

Gradient text

Charcoal Concrete gradient variations

Reversed

Horizontal

Radial

Conic

Softer

Deeper

Smooth (OKLCH)

Hard stops

Download as an image

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Frequently asked questions

What are the hex codes for the Charcoal Concrete gradient?

The Charcoal Concrete gradient uses 2 colours: #31333E and #545969, at an angle of 160°.

How do I use the Charcoal Concrete gradient in CSS?

Paste background: linear-gradient(160deg, #31333E, #545969); into any element’s styles. For Tailwind, use the class list in the Tailwind block above.

What text colour works on the Charcoal Concrete gradient?

White text has the best contrast, at 9.4:1 against the gradient’s average colour, which is AAA. Check the lightest and darkest ends too if text spans the whole gradient.