What color is #09581F?

#09581F is a dark, vivid green. In RGB it is rgb(9, 88, 31), and in HSL hsl(137, 81%, 19%).

Is #09581F accessible as text?

On white, #09581F has a contrast ratio of 8.65:1 (passes WCAG AA for body text); on black it is 2.43:1 (fails). For text placed on #09581F, use white for the best readability.

What is the closest Tailwind color to #09581F?

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

What colors go well with #09581F?

#09581F pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #580941. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #09581F below.

Is #09581F good for buttons?

#09581F works well for buttons and highlights, but use white text on #09581F — black text only reaches 2.43:1, below the 4.5:1 needed for normal-size labels.

Is #09581F the same as CSS darkgreen?

No — #09581F is not the CSS named color darkgreen, but darkgreen (#006400) is the closest CSS named color.

#09581F Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #09581F

Not just a swatch — here's how #09581F works with other colors. Named schemes with #09581F in its natural role, and a note on why the supporting colors balance it.

Botanical Studio Lead · 5 colors

Lead #09581F Secondary #4C6B3C 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 #09581F Secondary #754E1B 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 #09581F Anchor #392B1E Surface #EDE4D0 Accent #879B6D 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 #09581F 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 #09581F Secondary #617662 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 #09581F 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 46/100

Neutral

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

Softness 34/100

Low

Middle-weight — neither delicate nor heavy.

Depth 60/100

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 66/100

High

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

Brand distinctiveness 31/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 74/100

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 75/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #09581F

For UI

For branding

For interior

For fashion

People also use #09581F with

Green Castleton Green 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 8.7:1. Use

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

Avoid beside #09583A — 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 #09581F at work across the surfaces designers actually ship.

Website / UI

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Build faster.

A working theme, generated in seconds.

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: #09581F;
  --color-base-rgb: 9 88 31;
  --color-base-oklch: oklch(40.3% 0.114 147.1);
  --color-50: #F1FEF4;
  --color-100: #D9FCE3;
  --color-200: #B5F7C8;
  --color-300: #83ECA1;
  --color-400: #56DC7C;
  --color-500: #33C25C;
  --color-600: #2E934B;
  --color-700: #276839;
  --color-800: #1D4428;
  --color-900: #142A1A;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  castleton-green: {
    50: '#F1FEF4',
    100: '#D9FCE3',
    200: '#B5F7C8',
    300: '#83ECA1',
    400: '#56DC7C',
    500: '#33C25C',
    600: '#2E934B',
    700: '#276839',
    800: '#1D4428',
    900: '#142A1A',
  },
}

$base: #09581F;
$base-ink: #FFFFFF;
$base-50: #F1FEF4;
$base-100: #D9FCE3;
$base-200: #B5F7C8;
$base-300: #83ECA1;
$base-400: #56DC7C;
$base-500: #33C25C;
$base-600: #2E934B;
$base-700: #276839;
$base-800: #1D4428;
$base-900: #142A1A;
$base-hover: #074619;
$base-subtle: #9BE7B1;

{
    "color": {
        "base": {
            "value": "#09581F",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1FEF4",
                "type": "color"
            },
            "100": {
                "value": "#D9FCE3",
                "type": "color"
            },
            "200": {
                "value": "#B5F7C8",
                "type": "color"
            },
            "300": {
                "value": "#83ECA1",
                "type": "color"
            },
            "400": {
                "value": "#56DC7C",
                "type": "color"
            },
            "500": {
                "value": "#33C25C",
                "type": "color"
            },
            "600": {
                "value": "#2E934B",
                "type": "color"
            },
            "700": {
                "value": "#276839",
                "type": "color"
            },
            "800": {
                "value": "#1D4428",
                "type": "color"
            },
            "900": {
                "value": "#142A1A",
                "type": "color"
            }
        }
    }
}

Palettes built on #09581F

Color Lab

Pairs with #09581F

UI roles & guardrails

In real applications

Scales

Every model

Export