What color is #BB431B?

#BB431B is a medium, vivid brown. In RGB it is rgb(187, 67, 27), and in HSL hsl(15, 75%, 42%).

Is #BB431B accessible as text?

On white, #BB431B has a contrast ratio of 5.34:1 (passes WCAG AA for body text); on black it is 3.93:1 (fails). For text placed on #BB431B, use white for the best readability.

What is the closest Tailwind color to #BB431B?

The nearest Tailwind CSS token is amber-700 (#BB4D00).

What colors go well with #BB431B?

#BB431B pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #1B93BB. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #BB431B below.

Is #BB431B good for buttons?

#BB431B works well for buttons and highlights, but use white text on #BB431B — black text only reaches 3.93:1, below the 4.5:1 needed for normal-size labels.

Is #BB431B the same as CSS sienna?

No — #BB431B is not the CSS named color sienna, but sienna (#A0522D) is the closest CSS named color.

#BB431B Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #BB431B

Not just a swatch — here's how #BB431B works with other colors. Named schemes with #BB431B in its natural role, and a note on why the supporting colors balance it.

Warm Autumn Interior Dominant · 5 colors

Dominant #BB431B Secondary #B66423 Accent #767743 Surface #F4ECDD Anchor #3B2A20

This palette keeps Rust as the dominant warm neutral, balanced by muted terracotta and olive earth tones and grounded by a deep espresso anchor.

Modern Café Dominant · 5 colors

Dominant #BB431B Anchor #3A2A20 Surface #F0E2D0 Accent #959765 Secondary #3B3833

Rust 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 #BB431B Secondary #7B4926 Surface #EAD9C0 Accent #42503B Anchor #5B222D

Rust 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 #BB431B Surface #F3E7D6 Anchor #5F2036 Accent #E6C2C1 Secondary #332B2D

Rust 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 #BB431B Secondary #BA8E81 Support #9B9186 Ink #17140F

Rust 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 Rust carrying the quiet middle.

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Color Lab

How #BB431B 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 39/100

Low

Middle-weight — neither delicate nor heavy.

Depth 47/100

Moderate

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

Naturalness 78/100

High

Organic, earthy character — at home in wellness, food and craft brands.

Vintage feel 59/100

Moderate

Faded, nostalgic quality — editorial, heritage and retro work.

Luxury 50/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 44/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 98/100

Very high

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

Surface fit 12/100

Very low

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

Print safety 82/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #BB431B

For UI

For branding

For interior

For fashion

People also use #BB431B with

Ruby Red Brass Bondi Blue Greige Taupe

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 5.3:1. Use

Subtle surface Use #F1D9D1 for cards and hover fills. Tint 80

Avoid beside #BB781B — 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 #BB431B at work across the surfaces designers actually ship.

Website / UI

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Build faster.

A working theme, generated in seconds.

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: #BB431B;
  --color-base-rgb: 187 67 27;
  --color-base-oklch: oklch(54.5% 0.163 37.5);
  --color-50: #FEF4F1;
  --color-100: #FBE3DA;
  --color-200: #F5C7B8;
  --color-300: #E89F87;
  --color-400: #D77A5B;
  --color-500: #BC5938;
  --color-600: #904A32;
  --color-700: #663829;
  --color-800: #42271E;
  --color-900: #291A14;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  rust: {
    50: '#FEF4F1',
    100: '#FBE3DA',
    200: '#F5C7B8',
    300: '#E89F87',
    400: '#D77A5B',
    500: '#BC5938',
    600: '#904A32',
    700: '#663829',
    800: '#42271E',
    900: '#291A14',
  },
}

$base: #BB431B;
$base-ink: #FFFFFF;
$base-50: #FEF4F1;
$base-100: #FBE3DA;
$base-200: #F5C7B8;
$base-300: #E89F87;
$base-400: #D77A5B;
$base-500: #BC5938;
$base-600: #904A32;
$base-700: #663829;
$base-800: #42271E;
$base-900: #291A14;
$base-hover: #963615;
$base-subtle: #ECC6B9;

{
    "color": {
        "base": {
            "value": "#BB431B",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#FEF4F1",
                "type": "color"
            },
            "100": {
                "value": "#FBE3DA",
                "type": "color"
            },
            "200": {
                "value": "#F5C7B8",
                "type": "color"
            },
            "300": {
                "value": "#E89F87",
                "type": "color"
            },
            "400": {
                "value": "#D77A5B",
                "type": "color"
            },
            "500": {
                "value": "#BC5938",
                "type": "color"
            },
            "600": {
                "value": "#904A32",
                "type": "color"
            },
            "700": {
                "value": "#663829",
                "type": "color"
            },
            "800": {
                "value": "#42271E",
                "type": "color"
            },
            "900": {
                "value": "#291A14",
                "type": "color"
            }
        }
    }
}

Palettes built on #BB431B

Color Lab

Pairs with #BB431B

UI roles & guardrails

In real applications

Scales

Every model

Export