What color is #28512A?

#28512A is a dark, muted green. In RGB it is rgb(40, 81, 42), and in HSL hsl(123, 34%, 24%).

Is #28512A accessible as text?

On white, #28512A has a contrast ratio of 9.13:1 (passes WCAG AA for body text); on black it is 2.30:1 (fails). For text placed on #28512A, use white for the best readability.

What is the closest Tailwind color to #28512A?

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

What colors go well with #28512A?

#28512A pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #522850. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #28512A below.

Is #28512A good for buttons?

#28512A works well for buttons and highlights, but use white text on #28512A — black text only reaches 2.30:1, below the 4.5:1 needed for normal-size labels.

Is #28512A the same as CSS darkslategray?

No — #28512A 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.

#28512A Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #28512A

Not just a swatch — here's how #28512A works with other colors. Named schemes with #28512A in its natural role, and a note on why the supporting colors balance it.

Botanical Studio Lead · 5 colors

Lead #28512A Secondary #4C6B3B 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 #28512A 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 #28512A 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.

Japanese Sand Base · 5 colors

Base #28512A Surface #EEE9DC Highlight #F5F1E7 Secondary #B6B09F Ink #2B2723

Castleton 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.

Minimal Editorial Surface · 5 colors

Surface #F7F4EF Accent #28512A Secondary #637163 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.

Build a working theme in the generator →

Color Lab

How #28512A 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 48/100

Neutral

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

Softness 36/100

Low

Middle-weight — neither delicate nor heavy.

Depth 59/100

Moderate

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

Naturalness 97/100

Very high

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

Vintage feel 57/100

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 21/100

Low

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

UI accent fit 62/100

High

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

Surface fit 35/100

Low

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 #28512A

For UI

For branding

For interior

For fashion

People also use #28512A with

Dark Olive Green Brunswick Green Byzantium 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 #CFE2D0 for cards and hover fills. Tint 80

Avoid beside #285238 — 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 #28512A 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: #28512A;
  --color-base-rgb: 40 81 42;
  --color-base-oklch: oklch(39.4% 0.079 144.9);
  --color-50: #F4FAF5;
  --color-100: #E3F2E4;
  --color-200: #C8E4CA;
  --color-300: #A2CEA4;
  --color-400: #7DB580;
  --color-500: #5C985F;
  --color-600: #4C764E;
  --color-700: #3A553B;
  --color-800: #283929;
  --color-900: #1A231A;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  castleton-green: {
    50: '#F4FAF5',
    100: '#E3F2E4',
    200: '#C8E4CA',
    300: '#A2CEA4',
    400: '#7DB580',
    500: '#5C985F',
    600: '#4C764E',
    700: '#3A553B',
    800: '#283929',
    900: '#1A231A',
  },
}

$base: #28512A;
$base-ink: #FFFFFF;
$base-50: #F4FAF5;
$base-100: #E3F2E4;
$base-200: #C8E4CA;
$base-300: #A2CEA4;
$base-400: #7DB580;
$base-500: #5C985F;
$base-600: #4C764E;
$base-700: #3A553B;
$base-800: #283929;
$base-900: #1A231A;
$base-hover: #204222;
$base-subtle: #B6D4B7;

{
    "color": {
        "base": {
            "value": "#28512A",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F4FAF5",
                "type": "color"
            },
            "100": {
                "value": "#E3F2E4",
                "type": "color"
            },
            "200": {
                "value": "#C8E4CA",
                "type": "color"
            },
            "300": {
                "value": "#A2CEA4",
                "type": "color"
            },
            "400": {
                "value": "#7DB580",
                "type": "color"
            },
            "500": {
                "value": "#5C985F",
                "type": "color"
            },
            "600": {
                "value": "#4C764E",
                "type": "color"
            },
            "700": {
                "value": "#3A553B",
                "type": "color"
            },
            "800": {
                "value": "#283929",
                "type": "color"
            },
            "900": {
                "value": "#1A231A",
                "type": "color"
            }
        }
    }
}