What color is #09421B?

#09421B is a very dark, vivid green. In RGB it is rgb(9, 66, 27), and in HSL hsl(139, 76%, 15%).

Is #09421B accessible as text?

On white, #09421B has a contrast ratio of 11.62:1 (passes WCAG AA for body text); on black it is 1.81:1 (fails). For text placed on #09421B, use white for the best readability.

What is the closest Tailwind color to #09421B?

The nearest Tailwind CSS token is emerald-900 (#004F3B).

What colors go well with #09421B?

#09421B pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #430931. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #09421B below.

Is #09421B good for buttons?

#09421B works well for buttons and highlights, but use white text on #09421B — black text only reaches 1.81:1, below the 4.5:1 needed for normal-size labels.

Is #09421B the same as CSS darkslategray?

No — #09421B is not the CSS named color darkslategray, but darkslategray (#2F4F4F) 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.

#09421B Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #09421B

Not just a swatch — here's how #09421B works with other colors. Named schemes with #09421B in its natural role, and a note on why the supporting colors balance it.

Botanical Studio Lead · 5 colors

Lead #09421B Secondary #4C6C3C Accent #AD6C00 Surface #EEEAD6 Anchor #3C2F20

British Racing Green leads this botanical set among foliage greens and a terracotta accent, softened by cream and grounded in bark brown.

Vintage Leather Lead · 5 colors

Lead #09421B Secondary #754E1B Surface #E5DBC0 Accent #3C5140 Anchor #5B2321

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

Japanese Sand Base · 5 colors

Base #09421B Surface #EEEADC Highlight #F5F1E7 Secondary #B6B09F Ink #2B2723

British Racing Green sets a calm, sun-bleached base here, wrapped in bone and paper off-whites and a soft greige, with a single ink accent for wabi-sabi restraint.

Luxury Packaging Feature · 5 colors

Feature #09421B Anchor #141210 Accent #C0A64B Secondary #222C23 Surface #F1EDE3

British Racing Green carries the depth in this luxury scheme, offset by a brass accent and near-black and held together by a deep neutral and an off-white surface.

Minimal Editorial Surface · 5 colors

Surface #F7F4EF Accent #09421B Secondary #506153 Support #989286 Ink #17140F

British Racing Green 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 British Racing Green carrying the quiet middle.

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Color Lab

How #09421B 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 46/100

Neutral

Balanced temperature — flexible, sits between warm and cool schemes.

Softness 31/100

Low

Firm and assertive — carries weight and contrast.

Depth 66/100

High

Deep and grounding — anchors a layout, strong dark-mode base.

Naturalness 98/100

Very high

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

Vintage feel 51/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 70/100

High

Restrained and premium — deep, quiet, high-end packaging and fashion.

Brand distinctiveness 34/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 46/100

Moderate

Workable accent with care around contrast.

Surface fit 37/100

Low

Usable as a tinted surface in measured doses.

Print safety 81/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #09421B

For UI

For branding

For interior

For fashion

People also use #09421B with

Dark Green Bottle Green Deep Purple Platinum Hunter Green

UI roles & guardrails

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

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 11.6:1. Use

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

Avoid beside #09432F — 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 #09421B 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: #09421B;
  --color-base-rgb: 9 66 27;
  --color-base-oklch: oklch(33.4% 0.087 148.9);
  --color-50: #F1FEF5;
  --color-100: #DAFBE5;
  --color-200: #B7F5CB;
  --color-300: #87E9A6;
  --color-400: #5AD882;
  --color-500: #37BD62;
  --color-600: #329050;
  --color-700: #29663C;
  --color-800: #1E432A;
  --color-900: #14291B;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  british-racing-green: {
    50: '#F1FEF5',
    100: '#DAFBE5',
    200: '#B7F5CB',
    300: '#87E9A6',
    400: '#5AD882',
    500: '#37BD62',
    600: '#329050',
    700: '#29663C',
    800: '#1E432A',
    900: '#14291B',
  },
}

$base: #09421B;
$base-ink: #FFFFFF;
$base-50: #F1FEF5;
$base-100: #DAFBE5;
$base-200: #B7F5CB;
$base-300: #87E9A6;
$base-400: #5AD882;
$base-500: #37BD62;
$base-600: #329050;
$base-700: #29663C;
$base-800: #1E432A;
$base-900: #14291B;
$base-hover: #073616;
$base-subtle: #98E4B0;

{
    "color": {
        "base": {
            "value": "#09421B",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1FEF5",
                "type": "color"
            },
            "100": {
                "value": "#DAFBE5",
                "type": "color"
            },
            "200": {
                "value": "#B7F5CB",
                "type": "color"
            },
            "300": {
                "value": "#87E9A6",
                "type": "color"
            },
            "400": {
                "value": "#5AD882",
                "type": "color"
            },
            "500": {
                "value": "#37BD62",
                "type": "color"
            },
            "600": {
                "value": "#329050",
                "type": "color"
            },
            "700": {
                "value": "#29663C",
                "type": "color"
            },
            "800": {
                "value": "#1E432A",
                "type": "color"
            },
            "900": {
                "value": "#14291B",
                "type": "color"
            }
        }
    }
}