What color is #1D4E2D?

#1D4E2D is a dark green. In RGB it is rgb(29, 78, 45), and in HSL hsl(140, 46%, 21%).

Is #1D4E2D accessible as text?

On white, #1D4E2D has a contrast ratio of 9.63:1 (passes WCAG AA for body text); on black it is 2.18:1 (fails). For text placed on #1D4E2D, use white for the best readability.

What is the closest Tailwind color to #1D4E2D?

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

What colors go well with #1D4E2D?

#1D4E2D pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #4E1D3E. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #1D4E2D below.

Is #1D4E2D good for buttons?

#1D4E2D works well for buttons and highlights, but use white text on #1D4E2D — black text only reaches 2.18:1, below the 4.5:1 needed for normal-size labels.

Is #1D4E2D the same as CSS darkslategray?

No — #1D4E2D 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.

#1D4E2D Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #1D4E2D

Not just a swatch — here's how #1D4E2D works with other colors. Named schemes with #1D4E2D in its natural role, and a note on why the supporting colors balance it.

Botanical Studio Lead · 5 colors

Lead #1D4E2D 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 #1D4E2D 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 #1D4E2D Anchor #382B1E Surface #EDE4D0 Accent #869B6E 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 #1D4E2D Surface #EEEADC Highlight #F5F1E7 Secondary #B6B09F Ink #2A2723

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 #1D4E2D Secondary #5E6E61 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 #1D4E2D 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 35/100

Low

Middle-weight — neither delicate nor heavy.

Depth 61/100

High

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

Naturalness 86/100

Very high

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

Vintage feel 53/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 65/100

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 58/100

Moderate

Workable accent with care around contrast.

Surface fit 37/100

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 #1D4E2D

For UI

For branding

For interior

For fashion

People also use #1D4E2D with

Dark Olive Green Brunswick 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 9.6:1. Use

Subtle surface Use #C9E4D2 for cards and hover fills. Tint 80

Avoid beside #1D4E3E — 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 #1D4E2D 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: #1D4E2D;
  --color-base-rgb: 29 78 45;
  --color-base-oklch: oklch(38.1% 0.077 151.7);
  --color-50: #F3FBF6;
  --color-100: #E1F5E7;
  --color-200: #C4E9D0;
  --color-300: #9AD5AE;
  --color-400: #73BF8C;
  --color-500: #52A36D;
  --color-600: #447E57;
  --color-700: #355A41;
  --color-800: #253C2D;
  --color-900: #18251D;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  castleton-green: {
    50: '#F3FBF6',
    100: '#E1F5E7',
    200: '#C4E9D0',
    300: '#9AD5AE',
    400: '#73BF8C',
    500: '#52A36D',
    600: '#447E57',
    700: '#355A41',
    800: '#253C2D',
    900: '#18251D',
  },
}

$base: #1D4E2D;
$base-ink: #FFFFFF;
$base-50: #F3FBF6;
$base-100: #E1F5E7;
$base-200: #C4E9D0;
$base-300: #9AD5AE;
$base-400: #73BF8C;
$base-500: #52A36D;
$base-600: #447E57;
$base-700: #355A41;
$base-800: #253C2D;
$base-900: #18251D;
$base-hover: #173F24;
$base-subtle: #ADD8BC;

{
    "color": {
        "base": {
            "value": "#1D4E2D",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3FBF6",
                "type": "color"
            },
            "100": {
                "value": "#E1F5E7",
                "type": "color"
            },
            "200": {
                "value": "#C4E9D0",
                "type": "color"
            },
            "300": {
                "value": "#9AD5AE",
                "type": "color"
            },
            "400": {
                "value": "#73BF8C",
                "type": "color"
            },
            "500": {
                "value": "#52A36D",
                "type": "color"
            },
            "600": {
                "value": "#447E57",
                "type": "color"
            },
            "700": {
                "value": "#355A41",
                "type": "color"
            },
            "800": {
                "value": "#253C2D",
                "type": "color"
            },
            "900": {
                "value": "#18251D",
                "type": "color"
            }
        }
    }
}