What color is #185B2F?

#185B2F is a dark green. In RGB it is rgb(24, 91, 47), and in HSL hsl(141, 58%, 23%).

Is #185B2F accessible as text?

On white, #185B2F has a contrast ratio of 8.15:1 (passes WCAG AA for body text); on black it is 2.58:1 (fails). For text placed on #185B2F, use white for the best readability.

What is the closest Tailwind color to #185B2F?

The nearest Tailwind CSS token is green-900 (#0D542B).

What colors go well with #185B2F?

#185B2F pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #5D1945. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #185B2F below.

Is #185B2F good for buttons?

#185B2F works well for buttons and highlights, but use white text on #185B2F — black text only reaches 2.58:1, below the 4.5:1 needed for normal-size labels.

Is #185B2F the same as CSS darkgreen?

No — #185B2F is not the CSS named color darkgreen, but darkgreen (#006400) is the closest CSS named color.

#185B2F Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #185B2F

Not just a swatch — here's how #185B2F works with other colors. Named schemes with #185B2F in its natural role, and a note on why the supporting colors balance it.

Botanical Studio Lead · 5 colors

Lead #185B2F Secondary #4B6C3C Accent #AD6C00 Surface #EEEAD6 Anchor #3C2F20

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 #185B2F Secondary #754E1B Surface #E5DBC0 Accent #3C5140 Anchor #5B2321

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 #185B2F Anchor #382B1E Surface #EDE4D0 Accent #869B6D 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 #185B2F Surface #F0E8D6 Anchor #612029 Accent #E5C3BA 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 #185B2F Secondary #667A6A 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 #185B2F 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 45/100

Neutral

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

Softness 37/100

Low

Middle-weight — neither delicate nor heavy.

Depth 58/100

Moderate

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 58/100

Moderate

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

Luxury 64/100

High

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

Brand distinctiveness 26/100

Low

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

UI accent fit 75/100

High

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

Surface fit 28/100

Low

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

Print safety 79/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #185B2F

For UI

For branding

For interior

For fashion

People also use #185B2F with

Green Dark Slate Gray Tyrian 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 8.2:1. Use

Subtle surface Use #C7E8D3 for cards and hover fills. Tint 80

Avoid beside #195D47 — 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 #185B2F 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: #185B2F;
  --color-base-rgb: 24 91 47;
  --color-base-oklch: oklch(41.8% 0.098 150.8);
  --color-50: #F2FCF6;
  --color-100: #DEF7E7;
  --color-200: #BFEECF;
  --color-300: #92DDAC;
  --color-400: #69C98B;
  --color-500: #47AD6B;
  --color-600: #3D8556;
  --color-700: #305F40;
  --color-800: #233E2C;
  --color-900: #17261C;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  castleton-green: {
    50: '#F2FCF6',
    100: '#DEF7E7',
    200: '#BFEECF',
    300: '#92DDAC',
    400: '#69C98B',
    500: '#47AD6B',
    600: '#3D8556',
    700: '#305F40',
    800: '#233E2C',
    900: '#17261C',
  },
}

$base: #185B2F;
$base-ink: #FFFFFF;
$base-50: #F2FCF6;
$base-100: #DEF7E7;
$base-200: #BFEECF;
$base-300: #92DDAC;
$base-400: #69C98B;
$base-500: #47AD6B;
$base-600: #3D8556;
$base-700: #305F40;
$base-800: #233E2C;
$base-900: #17261C;
$base-hover: #144A27;
$base-subtle: #AADEBC;

{
    "color": {
        "base": {
            "value": "#185B2F",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F2FCF6",
                "type": "color"
            },
            "100": {
                "value": "#DEF7E7",
                "type": "color"
            },
            "200": {
                "value": "#BFEECF",
                "type": "color"
            },
            "300": {
                "value": "#92DDAC",
                "type": "color"
            },
            "400": {
                "value": "#69C98B",
                "type": "color"
            },
            "500": {
                "value": "#47AD6B",
                "type": "color"
            },
            "600": {
                "value": "#3D8556",
                "type": "color"
            },
            "700": {
                "value": "#305F40",
                "type": "color"
            },
            "800": {
                "value": "#233E2C",
                "type": "color"
            },
            "900": {
                "value": "#17261C",
                "type": "color"
            }
        }
    }
}

Palettes built on #185B2F

Color Lab

Pairs with #185B2F

UI roles & guardrails

In real applications

Scales

Every model

Export