What color is #255209?

#255209 is a dark, vivid green. In RGB it is rgb(37, 82, 9), and in HSL hsl(97, 80%, 18%).

Is #255209 accessible as text?

On white, #255209 has a contrast ratio of 9.17:1 (passes WCAG AA for body text); on black it is 2.29:1 (fails). For text placed on #255209, use white for the best readability.

What is the closest Tailwind color to #255209?

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

What colors go well with #255209?

#255209 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #360953. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #255209 below.

Is #255209 good for buttons?

#255209 works well for buttons and highlights, but use white text on #255209 — black text only reaches 2.29:1, below the 4.5:1 needed for normal-size labels.

Is #255209 the same as CSS darkgreen?

No — #255209 is not the CSS named color darkgreen, but darkgreen (#006400) is the closest CSS named color.

#255209 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #255209

Not just a swatch — here's how #255209 works with other colors. Named schemes with #255209 in its natural role, and a note on why the supporting colors balance it.

Botanical Studio Lead · 5 colors

Lead #255209 Secondary #4D6B3A Accent #AE6B00 Surface #EFEAD6 Anchor #3D2F21

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 #255209 Secondary #764D1C Surface #E6DBC0 Accent #3D513F Anchor #5B2323

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 #255209 Anchor #392B1E Surface #EDE4D0 Accent #889A6C 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 #255209 Surface #F1E8D6 Anchor #61202A Accent #E6C3BB 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 #255209 Secondary #62725C Support #999286 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 #255209 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 52/100

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 54/100

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 30/100

Low

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

UI accent fit 69/100

High

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

Surface fit 26/100

Low

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

Print safety 75/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #255209

For UI

For branding

For interior

For fashion

People also use #255209 with

Olive Castleton Green Russian Violet Platinum Army 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 9.2:1. Use

Subtle surface Use #D0EDBD for cards and hover fills. Tint 80

Avoid beside #0D5309 — 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 #255209 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: #255209;
  --color-base-rgb: 37 82 9;
  --color-base-oklch: oklch(39.1% 0.111 136.8);
  --color-50: #F6FEF1;
  --color-100: #E7FCD9;
  --color-200: #CFF7B6;
  --color-300: #ACEB84;
  --color-400: #8ADB57;
  --color-500: #6AC134;
  --color-600: #55932F;
  --color-700: #406827;
  --color-800: #2C441D;
  --color-900: #1C2914;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  castleton-green: {
    50: '#F6FEF1',
    100: '#E7FCD9',
    200: '#CFF7B6',
    300: '#ACEB84',
    400: '#8ADB57',
    500: '#6AC134',
    600: '#55932F',
    700: '#406827',
    800: '#2C441D',
    900: '#1C2914',
  },
}

$base: #255209;
$base-ink: #FFFFFF;
$base-50: #F6FEF1;
$base-100: #E7FCD9;
$base-200: #CFF7B6;
$base-300: #ACEB84;
$base-400: #8ADB57;
$base-500: #6AC134;
$base-600: #55932F;
$base-700: #406827;
$base-800: #2C441D;
$base-900: #1C2914;
$base-hover: #1E4207;
$base-subtle: #B7E69A;

{
    "color": {
        "base": {
            "value": "#255209",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F6FEF1",
                "type": "color"
            },
            "100": {
                "value": "#E7FCD9",
                "type": "color"
            },
            "200": {
                "value": "#CFF7B6",
                "type": "color"
            },
            "300": {
                "value": "#ACEB84",
                "type": "color"
            },
            "400": {
                "value": "#8ADB57",
                "type": "color"
            },
            "500": {
                "value": "#6AC134",
                "type": "color"
            },
            "600": {
                "value": "#55932F",
                "type": "color"
            },
            "700": {
                "value": "#406827",
                "type": "color"
            },
            "800": {
                "value": "#2C441D",
                "type": "color"
            },
            "900": {
                "value": "#1C2914",
                "type": "color"
            }
        }
    }
}

Palettes built on #255209

Color Lab

Pairs with #255209

UI roles & guardrails

In real applications

Scales

Every model

Export