What color is #18540F?

#18540F is a dark, vivid green. In RGB it is rgb(24, 84, 15), and in HSL hsl(112, 70%, 19%).

Is #18540F accessible as text?

On white, #18540F has a contrast ratio of 9.08:1 (passes WCAG AA for body text); on black it is 2.31:1 (fails). For text placed on #18540F, use white for the best readability.

What is the closest Tailwind color to #18540F?

The nearest Tailwind CSS token is lime-900 (#35530E).

What colors go well with #18540F?

#18540F pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #490F52. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #18540F below.

Is #18540F good for buttons?

#18540F works well for buttons and highlights, but use white text on #18540F — black text only reaches 2.31:1, below the 4.5:1 needed for normal-size labels.

Is #18540F the same as CSS darkgreen?

No — #18540F is not the CSS named color darkgreen, but darkgreen (#006400) is the closest CSS named color.

#18540F Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #18540F

Not just a swatch — here's how #18540F works with other colors. Named schemes with #18540F in its natural role, and a note on why the supporting colors balance it.

Botanical Studio Lead · 5 colors

Lead #18540F Secondary #4D6B3B Accent #AE6B00 Surface #EEEAD6 Anchor #3C2F21

Castleton 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 #18540F Secondary #754E1C Surface #E6DBC0 Accent #3C5140 Anchor #5B2322

Castleton 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.

Modern Café Dominant · 5 colors

Dominant #18540F Anchor #392B1E Surface #EDE4D0 Accent #889B6D Secondary #3A3833

Castleton Green 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.

Berry & Cream Lead · 5 colors

Lead #18540F Surface #F0E8D6 Anchor #61202A Accent #E6C3BA Secondary #342B2C

Castleton Green 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 #18540F Secondary #60735D Support #989286 Ink #17140F

Castleton 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 Castleton Green carrying the quiet middle.

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Color Lab

How #18540F 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 33/100

Low

Middle-weight — neither delicate nor heavy.

Depth 61/100

High

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

Naturalness 100/100

Very high

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

Vintage feel 52/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 67/100

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 70/100

High

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

Surface fit 24/100

Low

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

Print safety 74/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #18540F

For UI

For branding

For interior

For fashion

People also use #18540F with

Fern Green Castleton 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 9.1:1. Use

Subtle surface Use #C6EBC1 for cards and hover fills. Tint 80

Avoid beside #0F521C — 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 #18540F 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: #18540F;
  --color-base-rgb: 24 84 15;
  --color-base-oklch: oklch(39.3% 0.117 141.3);
  --color-50: #F3FDF1;
  --color-100: #E0FADB;
  --color-200: #C1F3BA;
  --color-300: #96E58A;
  --color-400: #6FD35F;
  --color-500: #4DB83D;
  --color-600: #418C35;
  --color-700: #33642B;
  --color-800: #244120;
  --color-900: #182815;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  castleton-green: {
    50: '#F3FDF1',
    100: '#E0FADB',
    200: '#C1F3BA',
    300: '#96E58A',
    400: '#6FD35F',
    500: '#4DB83D',
    600: '#418C35',
    700: '#33642B',
    800: '#244120',
    900: '#182815',
  },
}

$base: #18540F;
$base-ink: #FFFFFF;
$base-50: #F3FDF1;
$base-100: #E0FADB;
$base-200: #C1F3BA;
$base-300: #96E58A;
$base-400: #6FD35F;
$base-500: #4DB83D;
$base-600: #418C35;
$base-700: #33642B;
$base-800: #244120;
$base-900: #182815;
$base-hover: #13420C;
$base-subtle: #A9E2A0;

{
    "color": {
        "base": {
            "value": "#18540F",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3FDF1",
                "type": "color"
            },
            "100": {
                "value": "#E0FADB",
                "type": "color"
            },
            "200": {
                "value": "#C1F3BA",
                "type": "color"
            },
            "300": {
                "value": "#96E58A",
                "type": "color"
            },
            "400": {
                "value": "#6FD35F",
                "type": "color"
            },
            "500": {
                "value": "#4DB83D",
                "type": "color"
            },
            "600": {
                "value": "#418C35",
                "type": "color"
            },
            "700": {
                "value": "#33642B",
                "type": "color"
            },
            "800": {
                "value": "#244120",
                "type": "color"
            },
            "900": {
                "value": "#182815",
                "type": "color"
            }
        }
    }
}

Palettes built on #18540F

Color Lab

Pairs with #18540F

UI roles & guardrails

In real applications

Scales

Every model

Export