What color is #183E2F?

#183E2F is a very dark teal-green. In RGB it is rgb(24, 62, 47), and in HSL hsl(156, 44%, 17%).

Is #183E2F accessible as text?

On white, #183E2F has a contrast ratio of 11.87:1 (passes WCAG AA for body text); on black it is 1.77:1 (fails). For text placed on #183E2F, use white for the best readability.

What is the closest Tailwind color to #183E2F?

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

What colors go well with #183E2F?

#183E2F pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #3E1828. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #183E2F below.

Is #183E2F good for buttons?

#183E2F works well for buttons and highlights, but use white text on #183E2F — black text only reaches 1.77:1, below the 4.5:1 needed for normal-size labels.

Is #183E2F the same as CSS darkslategray?

No — #183E2F 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.

#183E2F Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #183E2F

Not just a swatch — here's how #183E2F works with other colors. Named schemes with #183E2F in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #183E2F Accent #A7C4BB Surface #E1D9BE Secondary #9AA0A0 Anchor #1B3548

Bottle Green opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.

Nordic Calm Accent · 5 colors

Accent #183E2F Secondary #ADB4B7 Surface #F1F2F0 Support #7895A3 Anchor #2D3236

Bottle Green keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.

Vintage Leather Lead · 5 colors

Lead #183E2F Secondary #744F1A Surface #E5DBC0 Accent #3B5141 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.

Luxury Packaging Feature · 5 colors

Feature #183E2F Anchor #141210 Accent #BDA84C Secondary #202C26 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 #183E2F Secondary #525E59 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.

Build a working theme in the generator →

Color Lab

How #183E2F 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 44/100

Neutral

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

Softness 33/100

Low

Middle-weight — neither delicate nor heavy.

Depth 64/100

High

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

Naturalness 43/100

Moderate

Loosely natural — an earthy edge without being rustic.

Vintage feel 38/100

Low

A faint retro warmth without tipping into sepia.

Luxury 67/100

High

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

Brand distinctiveness 20/100

Very low

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

UI accent fit 37/100

Low

Workable accent with care around contrast.

Surface fit 48/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 90/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #183E2F

For UI

For branding

For interior

For fashion

People also use #183E2F with

Hunter Green Gunmetal Gray Oxblood Platinum Dark Slate Gray

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 #C7E2D7 for cards and hover fills. Tint 80

Avoid beside #183E3C — 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 #183E2F 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: #183E2F;
  --color-base-rgb: 24 62 47;
  --color-base-oklch: oklch(33.1% 0.051 165.0);
  --color-50: #F4FBF8;
  --color-100: #E1F4EC;
  --color-200: #C4E8DA;
  --color-300: #9BD4BD;
  --color-400: #75BDA0;
  --color-500: #54A182;
  --color-600: #467C66;
  --color-700: #36594B;
  --color-800: #263B33;
  --color-900: #192520;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  bottle-green: {
    50: '#F4FBF8',
    100: '#E1F4EC',
    200: '#C4E8DA',
    300: '#9BD4BD',
    400: '#75BDA0',
    500: '#54A182',
    600: '#467C66',
    700: '#36594B',
    800: '#263B33',
    900: '#192520',
  },
}

$base: #183E2F;
$base-ink: #FFFFFF;
$base-50: #F4FBF8;
$base-100: #E1F4EC;
$base-200: #C4E8DA;
$base-300: #9BD4BD;
$base-400: #75BDA0;
$base-500: #54A182;
$base-600: #467C66;
$base-700: #36594B;
$base-800: #263B33;
$base-900: #192520;
$base-hover: #133226;
$base-subtle: #AAD5C4;

{
    "color": {
        "base": {
            "value": "#183E2F",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F4FBF8",
                "type": "color"
            },
            "100": {
                "value": "#E1F4EC",
                "type": "color"
            },
            "200": {
                "value": "#C4E8DA",
                "type": "color"
            },
            "300": {
                "value": "#9BD4BD",
                "type": "color"
            },
            "400": {
                "value": "#75BDA0",
                "type": "color"
            },
            "500": {
                "value": "#54A182",
                "type": "color"
            },
            "600": {
                "value": "#467C66",
                "type": "color"
            },
            "700": {
                "value": "#36594B",
                "type": "color"
            },
            "800": {
                "value": "#263B33",
                "type": "color"
            },
            "900": {
                "value": "#192520",
                "type": "color"
            }
        }
    }
}