What color is #183E18?

#183E18 is a very dark green. In RGB it is rgb(24, 62, 24), and in HSL hsl(120, 44%, 17%).

Is #183E18 accessible as text?

On white, #183E18 has a contrast ratio of 12.06:1 (passes WCAG AA for body text); on black it is 1.74:1 (fails). For text placed on #183E18, use white for the best readability.

What is the closest Tailwind color to #183E18?

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

What colors go well with #183E18?

#183E18 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #3E183E. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #183E18 below.

Is #183E18 good for buttons?

#183E18 works well for buttons and highlights, but use white text on #183E18 — black text only reaches 1.74:1, below the 4.5:1 needed for normal-size labels.

Is #183E18 the same as CSS darkslategray?

No — #183E18 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.

#183E18 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #183E18

Not just a swatch — here's how #183E18 works with other colors. Named schemes with #183E18 in its natural role, and a note on why the supporting colors balance it.

Botanical Studio Lead · 5 colors

Lead #183E18 Secondary #4C6B3B Accent #AD6B00 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 #183E18 Secondary #754E1B Surface #E6DBC0 Accent #3C5140 Anchor #5B2322

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 #183E18 Surface #EEE9DC 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 #183E18 Anchor #141210 Accent #C1A64B Secondary #232C23 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 #183E18 Secondary #515E50 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.

Build a working theme in the generator →

Color Lab

How #183E18 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 49/100

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 96/100

Very high

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

Vintage feel 49/100

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 30/100

Low

Quiet and neutral — a supporting tone, not a signature.

UI accent fit 41/100

Moderate

Workable accent with care around contrast.

Surface fit 40/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 83/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #183E18

For UI

For branding

For interior

For fashion

People also use #183E18 with

Army Green Bottle Green Russian Violet 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 12.1:1. Use

Subtle surface Use #C7E2C7 for cards and hover fills. Tint 80

Avoid beside #183E25 — 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 #183E18 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: #183E18;
  --color-base-rgb: 24 62 24;
  --color-base-oklch: oklch(32.6% 0.077 143.6);
  --color-50: #F4FBF4;
  --color-100: #E1F4E1;
  --color-200: #C4E8C4;
  --color-300: #9BD49B;
  --color-400: #75BD75;
  --color-500: #54A154;
  --color-600: #467C46;
  --color-700: #365936;
  --color-800: #263B26;
  --color-900: #192519;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  british-racing-green: {
    50: '#F4FBF4',
    100: '#E1F4E1',
    200: '#C4E8C4',
    300: '#9BD49B',
    400: '#75BD75',
    500: '#54A154',
    600: '#467C46',
    700: '#365936',
    800: '#263B26',
    900: '#192519',
  },
}

$base: #183E18;
$base-ink: #FFFFFF;
$base-50: #F4FBF4;
$base-100: #E1F4E1;
$base-200: #C4E8C4;
$base-300: #9BD49B;
$base-400: #75BD75;
$base-500: #54A154;
$base-600: #467C46;
$base-700: #365936;
$base-800: #263B26;
$base-900: #192519;
$base-hover: #133213;
$base-subtle: #AAD5AA;

{
    "color": {
        "base": {
            "value": "#183E18",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F4FBF4",
                "type": "color"
            },
            "100": {
                "value": "#E1F4E1",
                "type": "color"
            },
            "200": {
                "value": "#C4E8C4",
                "type": "color"
            },
            "300": {
                "value": "#9BD49B",
                "type": "color"
            },
            "400": {
                "value": "#75BD75",
                "type": "color"
            },
            "500": {
                "value": "#54A154",
                "type": "color"
            },
            "600": {
                "value": "#467C46",
                "type": "color"
            },
            "700": {
                "value": "#365936",
                "type": "color"
            },
            "800": {
                "value": "#263B26",
                "type": "color"
            },
            "900": {
                "value": "#192519",
                "type": "color"
            }
        }
    }
}

Palettes built on #183E18

Color Lab

Pairs with #183E18

UI roles & guardrails

In real applications

Scales

Every model

Export