What color is #B4101D?

#B4101D is a dark, vivid red. In RGB it is rgb(180, 16, 29), and in HSL hsl(355, 84%, 38%).

Is #B4101D accessible as text?

On white, #B4101D has a contrast ratio of 6.92:1 (passes WCAG AA for body text); on black it is 3.03:1 (fails). For text placed on #B4101D, use white for the best readability.

What is the closest Tailwind color to #B4101D?

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

What colors go well with #B4101D?

#B4101D pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #10B2A5. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #B4101D below.

Is #B4101D good for buttons?

#B4101D works well for buttons and highlights, but use white text on #B4101D — black text only reaches 3.03:1, below the 4.5:1 needed for normal-size labels.

Is #B4101D the same as CSS firebrick?

No — #B4101D 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.

#B4101D Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #B4101D

Not just a swatch — here's how #B4101D works with other colors. Named schemes with #B4101D in its natural role, and a note on why the supporting colors balance it.

Sunset Warmth Glow · 5 colors

Glow #B4101D Secondary #E76E54 Accent #EB9C35 Anchor #5C3951 Surface #F5E8D6

Firebrick 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 #B4101D Anchor #3A2A21 Surface #F0E2D0 Accent #969664 Secondary #3C3833

Firebrick 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 #B4101D Secondary #7B4927 Surface #EAD9C0 Accent #43503A Anchor #5A222E

Firebrick 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 #B4101D Surface #F3E6D6 Anchor #5F2037 Accent #E6C2C1 Secondary #332B2E

Firebrick 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 #B4101D Secondary #AE7A74 Support #9B9186 Ink #17140F

Firebrick 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 Firebrick carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #B4101D 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 96/100

Warm

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

Softness 32/100

Low

Middle-weight — neither delicate nor heavy.

Depth 54/100

Moderate

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

Naturalness 37/100

Low

Loosely natural — an earthy edge without being rustic.

Vintage feel 40/100

Low

A faint retro warmth without tipping into sepia.

Luxury 53/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 74/100

High

Bold and ownable — memorable as a primary brand color.

UI accent fit 88/100

Very high

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

Surface fit 8/100

Very low

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

Print safety 79/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #B4101D

For UI

For branding

For interior

For fashion

People also use #B4101D with

Medium Violet Red Ginger 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 6.9:1. Use

Subtle surface Use #F3CCCF for cards and hover fills. Tint 80

Avoid beside #B23810 — 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 #B4101D at work across the surfaces designers actually ship.

Website / UI

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Build faster.

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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: #B4101D;
  --color-base-rgb: 180 16 29;
  --color-base-oklch: oklch(49.0% 0.192 25.7);
  --color-50: #FEF0F1;
  --color-100: #FDD8DB;
  --color-200: #F8B4BA;
  --color-300: #EE818A;
  --color-400: #DF535F;
  --color-500: #C4303D;
  --color-600: #952D35;
  --color-700: #69252B;
  --color-800: #451C20;
  --color-900: #2A1315;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  firebrick: {
    50: '#FEF0F1',
    100: '#FDD8DB',
    200: '#F8B4BA',
    300: '#EE818A',
    400: '#DF535F',
    500: '#C4303D',
    600: '#952D35',
    700: '#69252B',
    800: '#451C20',
    900: '#2A1315',
  },
}

$base: #B4101D;
$base-ink: #FFFFFF;
$base-50: #FEF0F1;
$base-100: #FDD8DB;
$base-200: #F8B4BA;
$base-300: #EE818A;
$base-400: #DF535F;
$base-500: #C4303D;
$base-600: #952D35;
$base-700: #69252B;
$base-800: #451C20;
$base-900: #2A1315;
$base-hover: #8F0C17;
$base-subtle: #EEB1B6;

{
    "color": {
        "base": {
            "value": "#B4101D",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#FEF0F1",
                "type": "color"
            },
            "100": {
                "value": "#FDD8DB",
                "type": "color"
            },
            "200": {
                "value": "#F8B4BA",
                "type": "color"
            },
            "300": {
                "value": "#EE818A",
                "type": "color"
            },
            "400": {
                "value": "#DF535F",
                "type": "color"
            },
            "500": {
                "value": "#C4303D",
                "type": "color"
            },
            "600": {
                "value": "#952D35",
                "type": "color"
            },
            "700": {
                "value": "#69252B",
                "type": "color"
            },
            "800": {
                "value": "#451C20",
                "type": "color"
            },
            "900": {
                "value": "#2A1315",
                "type": "color"
            }
        }
    }
}