What color is #183E2A?

#183E2A is a very dark teal-green. In RGB it is rgb(24, 62, 42), and in HSL hsl(148, 44%, 17%).

Is #183E2A accessible as text?

On white, #183E2A has a contrast ratio of 11.92:1 (passes WCAG AA for body text); on black it is 1.76:1 (fails). For text placed on #183E2A, use white for the best readability.

What is the closest Tailwind color to #183E2A?

The nearest Tailwind CSS token is emerald-900 (#004F3B).

What colors go well with #183E2A?

#183E2A pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #3E182D. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #183E2A below.

Is #183E2A good for buttons?

#183E2A works well for buttons and highlights, but use white text on #183E2A — black text only reaches 1.76:1, below the 4.5:1 needed for normal-size labels.

Is #183E2A the same as CSS darkslategray?

No — #183E2A 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.

#183E2A Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #183E2A

Not just a swatch — here's how #183E2A works with other colors. Named schemes with #183E2A in its natural role, and a note on why the supporting colors balance it.

Botanical Studio Lead · 5 colors

Lead #183E2A Secondary #4A6C3D Accent #AC6D00 Surface #EEEAD6 Anchor #3C2F20

Bottle 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 #183E2A Secondary #744E1A Surface #E5DBC0 Accent #3C5140 Anchor #5B2320

Bottle 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.

Japanese Sand Base · 5 colors

Base #183E2A Surface #EEEADC Highlight #F5F1E7 Secondary #B6B09F Ink #2A2723

Bottle 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.

Luxury Packaging Feature · 5 colors

Feature #183E2A Anchor #141210 Accent #BEA74B Secondary #212C25 Surface #F1EDE3

Bottle Green carries the depth in this luxury scheme, offset by a brass accent and near-black and held together by a deep neutral and an off-white surface.

Minimal Editorial Surface · 5 colors

Surface #F7F4EF Accent #183E2A Secondary #525E56 Support #989286 Ink #17140F

Bottle 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 Bottle Green carrying the quiet middle.

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Color Lab

How #183E2A 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 33/100

Low

Middle-weight — neither delicate nor heavy.

Depth 65/100

High

Deep and grounding — anchors a layout, strong dark-mode base.

Naturalness 57/100

Moderate

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

Vintage feel 41/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 68/100

High

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

Brand distinctiveness 22/100

Low

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

UI accent fit 37/100

Low

Workable accent with care around contrast.

Surface fit 46/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 88/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #183E2A

For UI

For branding

For interior

For fashion

People also use #183E2A with

Hunter Green Bottle Green Oxblood Platinum

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 11.9:1. Use

Subtle surface Use #C7E2D4 for cards and hover fills. Tint 80

Avoid beside #183E37 — 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 #183E2A 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: #183E2A;
  --color-base-rgb: 24 62 42;
  --color-base-oklch: oklch(33.0% 0.057 158.1);
  --color-50: #F4FBF7;
  --color-100: #E1F4EA;
  --color-200: #C4E8D5;
  --color-300: #9BD4B6;
  --color-400: #75BD97;
  --color-500: #54A178;
  --color-600: #467C5F;
  --color-700: #365946;
  --color-800: #263B30;
  --color-900: #19251E;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  bottle-green: {
    50: '#F4FBF7',
    100: '#E1F4EA',
    200: '#C4E8D5',
    300: '#9BD4B6',
    400: '#75BD97',
    500: '#54A178',
    600: '#467C5F',
    700: '#365946',
    800: '#263B30',
    900: '#19251E',
  },
}

$base: #183E2A;
$base-ink: #FFFFFF;
$base-50: #F4FBF7;
$base-100: #E1F4EA;
$base-200: #C4E8D5;
$base-300: #9BD4B6;
$base-400: #75BD97;
$base-500: #54A178;
$base-600: #467C5F;
$base-700: #365946;
$base-800: #263B30;
$base-900: #19251E;
$base-hover: #133222;
$base-subtle: #AAD5BE;

{
    "color": {
        "base": {
            "value": "#183E2A",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F4FBF7",
                "type": "color"
            },
            "100": {
                "value": "#E1F4EA",
                "type": "color"
            },
            "200": {
                "value": "#C4E8D5",
                "type": "color"
            },
            "300": {
                "value": "#9BD4B6",
                "type": "color"
            },
            "400": {
                "value": "#75BD97",
                "type": "color"
            },
            "500": {
                "value": "#54A178",
                "type": "color"
            },
            "600": {
                "value": "#467C5F",
                "type": "color"
            },
            "700": {
                "value": "#365946",
                "type": "color"
            },
            "800": {
                "value": "#263B30",
                "type": "color"
            },
            "900": {
                "value": "#19251E",
                "type": "color"
            }
        }
    }
}

Palettes built on #183E2A

Color Lab

Pairs with #183E2A

UI roles & guardrails

In real applications

Scales

Every model

Export