What color is #C40000?

#C40000 is a dark, vivid red. In RGB it is rgb(196, 0, 0), and in HSL hsl(0, 100%, 38%).

Is #C40000 accessible as text?

On white, #C40000 has a contrast ratio of 6.27:1 (passes WCAG AA for body text); on black it is 3.35:1 (fails). For text placed on #C40000, use white for the best readability.

What is the closest Tailwind color to #C40000?

The nearest Tailwind CSS token is red-700 (#C10007).

What colors go well with #C40000?

#C40000 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #00C2C2. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #C40000 below.

Is #C40000 good for buttons?

#C40000 works well for buttons and highlights, but use white text on #C40000 — black text only reaches 3.35:1, below the 4.5:1 needed for normal-size labels.

Is #C40000 the same as CSS firebrick?

No — #C40000 is not the CSS named color firebrick, but firebrick (#B22222) is the closest CSS named color by perceptual color distance — it sits in a different color family, so treat it as a rough reference, not a match.

#C40000 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #C40000

Not just a swatch — here's how #C40000 works with other colors. Named schemes with #C40000 in its natural role, and a note on why the supporting colors balance it.

Sunset Warmth Glow · 5 colors

Glow #C40000 Secondary #E76F53 Accent #EA9C35 Anchor #5C3950 Surface #F4E8D6

Rosso Corsa glows at the center of this sunset palette, joined by coral and gold, deepened by a plum anchor and cooled with cream.

Modern Café Dominant · 5 colors

Dominant #C40000 Anchor #3A2A21 Surface #F0E2D0 Accent #969664 Secondary #3C3833

Rosso Corsa anchors this café scheme as the warm mid-tone, lifted by latte cream and a muted sage accent and grounded by espresso brown and a warm charcoal.

Vintage Leather Lead · 5 colors

Lead #C40000 Secondary #7B4927 Surface #EAD9C0 Accent #43503A Anchor #5A222E

Rosso Corsa plays the worn-leather lead, deepened by saddle brown and an oxblood anchor, softened by aged cream and cooled by a muted forest green.

Berry & Cream Lead · 5 colors

Lead #C40000 Surface #F3E6D6 Anchor #5F2037 Accent #E6C2C1 Secondary #332B2D

Rosso Corsa sits between cream and a deep berry here, softened by a blush accent and grounded by charcoal.

Minimal Editorial Surface · 5 colors

Surface #F7F4EF Accent #C40000 Secondary #BA8076 Support #9B9186 Ink #17140F

Rosso Corsa is the single accent in this high-contrast editorial system — set on near-white paper against near-black ink, with a warm grey and a desaturated tint of Rosso Corsa carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #C40000 actually behaves in design work — read from its OKLCH lightness, chroma and hue, not just its raw numbers. Ten signals to help you decide where this color earns its place.

Warmth 97/100

Warm

Reads warm and advancing — inviting, energetic, draws the eye forward.

Softness 31/100

Low

Firm and assertive — carries weight and contrast.

Depth 52/100

Moderate

Mid depth — usable as an accent or a muted ground.

Naturalness 24/100

Low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 32/100

Low

A faint retro warmth without tipping into sepia.

Luxury 49/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 82/100

Very high

Bold and ownable — memorable as a primary brand color.

UI accent fit 81/100

Very high

Strong interactive accent — visible and can carry a legible label.

Surface fit 9/100

Very low

Too saturated or mid-toned for big areas — keep it to accents.

Print safety 77/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #C40000

For UI

For branding

For interior

For fashion

People also use #C40000 with

Rose Copper Persian Green Gainsboro Espresso

UI roles & guardrails

Primary action Safe as a filled button with white label. AA

Body text Passes on white at 16px and above. Pass

Large display Fine for headings 24px+ on white. Pass

Background Pair with white text at 6.3:1. Use

Subtle surface Use #F6C9C9 for cards and hover fills. Tint 80

Avoid beside #C24100 — the hue gap is too small to read as intentional. Clash

In real applications

Not a swatch to memorise — a color to build with. Here is #C40000 at work across the surfaces designers actually ship.

Website / UI

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Dashboard

Revenue

$48.2k ▲ 12%

Brand

AVELINE

Studio

Poster

Nov 14 · 8PM

NIGHT
MARKET

Packaging

BLOOM

Botanical Wash

250 ml

Interior

Every model

Export

:root {
  --color-base: #C40000;
  --color-base-rgb: 196 0 0;
  --color-base-oklch: oklch(51.5% 0.211 29.2);
  --color-50: #FEF0F0;
  --color-100: #FDD8D8;
  --color-200: #FCB1B1;
  --color-300: #F87777;
  --color-400: #EC4646;
  --color-500: #D22222;
  --color-600: #9F2323;
  --color-700: #701F1F;
  --color-800: #481818;
  --color-900: #2C1111;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  rosso-corsa: {
    50: '#FEF0F0',
    100: '#FDD8D8',
    200: '#FCB1B1',
    300: '#F87777',
    400: '#EC4646',
    500: '#D22222',
    600: '#9F2323',
    700: '#701F1F',
    800: '#481818',
    900: '#2C1111',
  },
}

$base: #C40000;
$base-ink: #FFFFFF;
$base-50: #FEF0F0;
$base-100: #FDD8D8;
$base-200: #FCB1B1;
$base-300: #F87777;
$base-400: #EC4646;
$base-500: #D22222;
$base-600: #9F2323;
$base-700: #701F1F;
$base-800: #481818;
$base-900: #2C1111;
$base-hover: #9B0000;
$base-subtle: #F4ACAC;

{
    "color": {
        "base": {
            "value": "#C40000",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#FEF0F0",
                "type": "color"
            },
            "100": {
                "value": "#FDD8D8",
                "type": "color"
            },
            "200": {
                "value": "#FCB1B1",
                "type": "color"
            },
            "300": {
                "value": "#F87777",
                "type": "color"
            },
            "400": {
                "value": "#EC4646",
                "type": "color"
            },
            "500": {
                "value": "#D22222",
                "type": "color"
            },
            "600": {
                "value": "#9F2323",
                "type": "color"
            },
            "700": {
                "value": "#701F1F",
                "type": "color"
            },
            "800": {
                "value": "#481818",
                "type": "color"
            },
            "900": {
                "value": "#2C1111",
                "type": "color"
            }
        }
    }
}