What color is #213904?

#213904 is a very dark, vivid green. In RGB it is rgb(33, 57, 4), and in HSL hsl(87, 87%, 12%).

Is #213904 accessible as text?

On white, #213904 has a contrast ratio of 12.71:1 (passes WCAG AA for body text); on black it is 1.65:1 (fails). For text placed on #213904, use white for the best readability.

What is the closest Tailwind color to #213904?

The nearest Tailwind CSS token is lime-950 (#192E03).

What colors go well with #213904?

#213904 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #1C0439. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #213904 below.

Is #213904 good for buttons?

#213904 works well for buttons and highlights, but use white text on #213904 — black text only reaches 1.65:1, below the 4.5:1 needed for normal-size labels.

Is #213904 the same as CSS darkslategray?

No — #213904 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.

#213904 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #213904

Not just a swatch — here's how #213904 works with other colors. Named schemes with #213904 in its natural role, and a note on why the supporting colors balance it.

Botanical Studio Lead · 5 colors

Lead #213904 Secondary #4E6B3A Accent #AF6A00 Surface #EFE9D6 Anchor #3D2F21

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 #213904 Secondary #764D1D Surface #E6DBC0 Accent #3D513F Anchor #5B2323

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 #213904 Surface #EEE9DC Highlight #F5F1E7 Secondary #B7B09F 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 #213904 Anchor #141210 Accent #C2A54B Secondary #252B21 Surface #F2EDE3

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 #213904 Secondary #505A49 Support #999286 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.

Build a working theme in the generator →

Color Lab

How #213904 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 54/100

Neutral

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

Softness 29/100

Low

Firm and assertive — carries weight and contrast.

Depth 67/100

High

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

Naturalness 100/100

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 71/100

High

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

Brand distinctiveness 32/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 38/100

Low

Workable accent with care around contrast.

Surface fit 40/100

Low

Usable as a tinted surface in measured doses.

Print safety 82/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #213904

For UI

For branding

For interior

For fashion

People also use #213904 with

Army Green British Racing Green Deep Purple Platinum

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 12.7:1. Use

Subtle surface Use #D5EEB6 for cards and hover fills. Tint 80

Avoid beside #103904 — 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 #213904 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: #213904;
  --color-base-rgb: 33 57 4;
  --color-base-oklch: oklch(31.3% 0.082 131.6);
  --color-50: #F8FEF0;
  --color-100: #ECFDD8;
  --color-200: #DAFAB3;
  --color-300: #BDF07F;
  --color-400: #A0E151;
  --color-500: #82C72E;
  --color-600: #66972B;
  --color-700: #4B6B24;
  --color-800: #33451C;
  --color-900: #202A13;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  british-racing-green: {
    50: '#F8FEF0',
    100: '#ECFDD8',
    200: '#DAFAB3',
    300: '#BDF07F',
    400: '#A0E151',
    500: '#82C72E',
    600: '#66972B',
    700: '#4B6B24',
    800: '#33451C',
    900: '#202A13',
  },
}

$base: #213904;
$base-ink: #FFFFFF;
$base-50: #F8FEF0;
$base-100: #ECFDD8;
$base-200: #DAFAB3;
$base-300: #BDF07F;
$base-400: #A0E151;
$base-500: #82C72E;
$base-600: #66972B;
$base-700: #4B6B24;
$base-800: #33451C;
$base-900: #202A13;
$base-hover: #1B2E03;
$base-subtle: #C0E88F;

{
    "color": {
        "base": {
            "value": "#213904",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F8FEF0",
                "type": "color"
            },
            "100": {
                "value": "#ECFDD8",
                "type": "color"
            },
            "200": {
                "value": "#DAFAB3",
                "type": "color"
            },
            "300": {
                "value": "#BDF07F",
                "type": "color"
            },
            "400": {
                "value": "#A0E151",
                "type": "color"
            },
            "500": {
                "value": "#82C72E",
                "type": "color"
            },
            "600": {
                "value": "#66972B",
                "type": "color"
            },
            "700": {
                "value": "#4B6B24",
                "type": "color"
            },
            "800": {
                "value": "#33451C",
                "type": "color"
            },
            "900": {
                "value": "#202A13",
                "type": "color"
            }
        }
    }
}