What color is #183B2A?

#183B2A is a very dark teal-green. In RGB it is rgb(24, 59, 42), and in HSL hsl(151, 42%, 16%).

Is #183B2A accessible as text?

On white, #183B2A has a contrast ratio of 12.37:1 (passes WCAG AA for body text); on black it is 1.70:1 (fails). For text placed on #183B2A, use white for the best readability.

What is the closest Tailwind color to #183B2A?

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

What colors go well with #183B2A?

#183B2A pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #3A1828. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #183B2A below.

Is #183B2A good for buttons?

#183B2A works well for buttons and highlights, but use white text on #183B2A — black text only reaches 1.70:1, below the 4.5:1 needed for normal-size labels.

Is #183B2A the same as CSS darkslategray?

No — #183B2A 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.

#183B2A Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #183B2A

Not just a swatch — here's how #183B2A works with other colors. Named schemes with #183B2A in its natural role, and a note on why the supporting colors balance it.

Botanical Studio Lead · 5 colors

Lead #183B2A Secondary #4A6C3E 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 #183B2A Secondary #744E1A 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.

Japanese Sand Base · 5 colors

Base #183B2A Surface #EDEADC 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 #183B2A Anchor #141210 Accent #BEA74C 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 #183B2A Secondary #505B55 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 #183B2A 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 32/100

Low

Middle-weight — neither delicate nor heavy.

Depth 65/100

High

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

Naturalness 50/100

Moderate

Loosely natural — an earthy edge without being rustic.

Vintage feel 38/100

Low

A faint retro warmth without tipping into sepia.

Luxury 68/100

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 34/100

Low

Workable accent with care around contrast.

Surface fit 49/100

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 #183B2A

For UI

For branding

For interior

For fashion

People also use #183B2A with

Castleton Green Gunmetal Gray Oxblood 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 12.4:1. Use

Subtle surface Use #C7E1D5 for cards and hover fills. Tint 80

Avoid beside #183A35 — 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 #183B2A 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: #183B2A;
  --color-base-rgb: 24 59 42;
  --color-base-oklch: oklch(32.1% 0.051 160.4);
  --color-50: #F4FBF7;
  --color-100: #E2F4EB;
  --color-200: #C5E7D7;
  --color-300: #9CD3B9;
  --color-400: #76BC9A;
  --color-500: #559F7C;
  --color-600: #477B62;
  --color-700: #365848;
  --color-800: #263B31;
  --color-900: #19241F;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  bottle-green: {
    50: '#F4FBF7',
    100: '#E2F4EB',
    200: '#C5E7D7',
    300: '#9CD3B9',
    400: '#76BC9A',
    500: '#559F7C',
    600: '#477B62',
    700: '#365848',
    800: '#263B31',
    900: '#19241F',
  },
}

$base: #183B2A;
$base-ink: #FFFFFF;
$base-50: #F4FBF7;
$base-100: #E2F4EB;
$base-200: #C5E7D7;
$base-300: #9CD3B9;
$base-400: #76BC9A;
$base-500: #559F7C;
$base-600: #477B62;
$base-700: #365848;
$base-800: #263B31;
$base-900: #19241F;
$base-hover: #132E21;
$base-subtle: #AAD3BF;

{
    "color": {
        "base": {
            "value": "#183B2A",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F4FBF7",
                "type": "color"
            },
            "100": {
                "value": "#E2F4EB",
                "type": "color"
            },
            "200": {
                "value": "#C5E7D7",
                "type": "color"
            },
            "300": {
                "value": "#9CD3B9",
                "type": "color"
            },
            "400": {
                "value": "#76BC9A",
                "type": "color"
            },
            "500": {
                "value": "#559F7C",
                "type": "color"
            },
            "600": {
                "value": "#477B62",
                "type": "color"
            },
            "700": {
                "value": "#365848",
                "type": "color"
            },
            "800": {
                "value": "#263B31",
                "type": "color"
            },
            "900": {
                "value": "#19241F",
                "type": "color"
            }
        }
    }
}