What color is #183D33?

#183D33 is a very dark teal-green. In RGB it is rgb(24, 61, 51), and in HSL hsl(164, 44%, 17%).

Is #183D33 accessible as text?

On white, #183D33 has a contrast ratio of 11.97:1 (passes WCAG AA for body text); on black it is 1.75:1 (fails). For text placed on #183D33, use white for the best readability.

What is the closest Tailwind color to #183D33?

The nearest Tailwind CSS token is teal-950 (#022F2E).

What colors go well with #183D33?

#183D33 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #3E1822. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #183D33 below.

Is #183D33 good for buttons?

#183D33 works well for buttons and highlights, but use white text on #183D33 — black text only reaches 1.75:1, below the 4.5:1 needed for normal-size labels.

Is #183D33 the same as CSS darkslategray?

No — #183D33 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.

#183D33 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #183D33

Not just a swatch — here's how #183D33 works with other colors. Named schemes with #183D33 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #183D33 Accent #A7C4BC Surface #E1D9BE Secondary #9AA0A0 Anchor #1B3549

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 #183D33 Secondary #ADB4B7 Surface #F1F2F0 Support #7994A4 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 #183D33 Secondary #734F19 Surface #E4DBC0 Accent #3B5141 Anchor #5B231F

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 #183D33 Anchor #141210 Accent #BCA84C Secondary #1F2C28 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 #183D33 Secondary #525E5A Support #989286 Ink #16140F

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 #183D33 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 42/100

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 29/100

Low

Loosely natural — an earthy edge without being rustic.

Vintage feel 36/100

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 18/100

Very low

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

UI accent fit 35/100

Low

Workable accent with care around contrast.

Surface fit 49/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 91/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #183D33

For UI

For branding

For interior

For fashion

People also use #183D33 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 12.0:1. Use

Subtle surface Use #C7E2DB for cards and hover fills. Tint 80

Avoid beside #183C3E — 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 #183D33 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: #183D33;
  --color-base-rgb: 24 61 51;
  --color-base-oklch: oklch(32.9% 0.046 173.2);
  --color-50: #F4FBF9;
  --color-100: #E1F4EF;
  --color-200: #C4E8DF;
  --color-300: #9BD4C5;
  --color-400: #75BDAA;
  --color-500: #54A18C;
  --color-600: #467C6E;
  --color-700: #365950;
  --color-800: #263B35;
  --color-900: #192521;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  bottle-green: {
    50: '#F4FBF9',
    100: '#E1F4EF',
    200: '#C4E8DF',
    300: '#9BD4C5',
    400: '#75BDAA',
    500: '#54A18C',
    600: '#467C6E',
    700: '#365950',
    800: '#263B35',
    900: '#192521',
  },
}

$base: #183D33;
$base-ink: #FFFFFF;
$base-50: #F4FBF9;
$base-100: #E1F4EF;
$base-200: #C4E8DF;
$base-300: #9BD4C5;
$base-400: #75BDAA;
$base-500: #54A18C;
$base-600: #467C6E;
$base-700: #365950;
$base-800: #263B35;
$base-900: #192521;
$base-hover: #13322A;
$base-subtle: #AAD5C9;

{
    "color": {
        "base": {
            "value": "#183D33",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F4FBF9",
                "type": "color"
            },
            "100": {
                "value": "#E1F4EF",
                "type": "color"
            },
            "200": {
                "value": "#C4E8DF",
                "type": "color"
            },
            "300": {
                "value": "#9BD4C5",
                "type": "color"
            },
            "400": {
                "value": "#75BDAA",
                "type": "color"
            },
            "500": {
                "value": "#54A18C",
                "type": "color"
            },
            "600": {
                "value": "#467C6E",
                "type": "color"
            },
            "700": {
                "value": "#365950",
                "type": "color"
            },
            "800": {
                "value": "#263B35",
                "type": "color"
            },
            "900": {
                "value": "#192521",
                "type": "color"
            }
        }
    }
}