Concrete Soot

#3A352F

#6A5F52

Text readability

Ui NeutralDark

Concrete Soot is a neutral and dark 2-colour linear gradient that runs from charcoal (#3A352F) to grey (#6A5F52) at 90°. It suits subtle surfaces and app backgrounds and dark-mode interfaces and footers. White text reads best on it, at a contrast ratio of 8.7:1 against the gradient’s average colour (AAA). Check every point, not just the average →

CSS

background: linear-gradient(90deg, #3A352F, #6A5F52);

Tailwind

bg-gradient-to-r from-[#3A352F] to-[#6A5F52]

Figma token

{
    "concrete-soot": {
        "value": "linear-gradient(90deg, #3A352F 0%, #6A5F52 100%)",
        "type": "color"
    }
}

Concrete Soot gradient for SwiftUI, Flutter, Android and more

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

let concreteSootGradient = LinearGradient(
    colors: [
        Color(red: 0.227, green: 0.208, blue: 0.184),
        Color(red: 0.416, green: 0.373, blue: 0.322)
    ],
    startPoint: UnitPoint(x: 0, y: 0.5),
    endPoint: UnitPoint(x: 1, y: 0.5)
)

// Usage
Rectangle().fill(concreteSootGradient)

val concreteSootColors = listOf(Color(0xFF3A352F), Color(0xFF6A5F52))

Modifier.drawBehind {
    drawRect(
        Brush.linearGradient(
            colors = concreteSootColors,
            start = Offset(size.width * 0f, size.height * 0.5f),
            end = Offset(size.width * 1f, size.height * 0.5f)
        )
    )
}

<!-- res/drawable/concrete-soot_gradient.xml -->
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">
    <gradient
        android:angle="0"
        android:startColor="#3A352F"
        android:endColor="#6A5F52"
        android:type="linear" />
</shape>

const concreteSootGradient = LinearGradient(
    begin: Alignment(-1, 0),
    end: Alignment(1, 0),
    colors: [Color(0xFF3A352F), Color(0xFF6A5F52)],
);

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

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

<LinearGradient
  colors={['#3A352F', '#6A5F52']}
  start={{ x: 0, y: 0.5 }}
  end={{ x: 1, y: 0.5 }}
  style={{ flex: 1 }}
/>

<svg xmlns="http://www.w3.org/2000/svg" width="1200" height="630" viewBox="0 0 1200 630">
  <defs>
    <linearGradient id="concrete-soot" x1="0" y1="0.5" x2="1" y2="0.5">
      <stop offset="0%" stop-color="#3A352F" />
      <stop offset="100%" stop-color="#6A5F52" />
    </linearGradient>
  </defs>
  <rect width="100%" height="100%" fill="url(#concrete-soot)" />
</svg>

:root {
  --concrete-soot-1: #3A352F;
  --concrete-soot-2: #6A5F52;
  --concrete-soot-angle: 90deg;
  --concrete-soot: linear-gradient(var(--concrete-soot-angle), var(--concrete-soot-1), var(--concrete-soot-2));
}

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

$concrete-soot-1: #3A352F;
$concrete-soot-2: #6A5F52;
$concrete-soot: linear-gradient(90deg, $concrete-soot-1, $concrete-soot-2);

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

Colours in the Concrete Soot gradient

Stop	Name	HEX	RGB	HSL
1	Charcoal	`#3A352F`	`rgb(58, 53, 47)`	`hsl(33, 10%, 21%)`
2	Grey	`#6A5F52`	`rgb(106, 95, 82)`	`hsl(33, 13%, 37%)`

Concrete Soot gradient in use

Build something beautifulA hero section on the Concrete Soot gradientGet started

Button

Card accentAs a border or progress bar

Gradient text

Concrete Soot gradient variations

Reversed

Vertical

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 Concrete Soot gradient?

The Concrete Soot gradient uses 2 colours: #3A352F and #6A5F52, at an angle of 90°.

How do I use the Concrete Soot gradient in CSS?

Paste background: linear-gradient(90deg, #3A352F, #6A5F52); into any element’s styles. For Tailwind, use the class list in the Tailwind block above.

What text colour works on the Concrete Soot gradient?

White text has the best contrast, at 8.7:1 against the gradient’s average colour, which is AAA. Check the lightest and darkest ends too if text spans the whole gradient.