What color is #183F2E?

#183F2E is a very dark teal-green. In RGB it is rgb(24, 63, 46), and in HSL hsl(154, 45%, 17%).

Is #183F2E accessible as text?

On white, #183F2E has a contrast ratio of 11.74:1 (passes WCAG AA for body text); on black it is 1.79:1 (fails). For text placed on #183F2E, use white for the best readability.

What is the closest Tailwind color to #183F2E?

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

What colors go well with #183F2E?

#183F2E pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #3F1829. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #183F2E below.

Is #183F2E good for buttons?

#183F2E works well for buttons and highlights, but use white text on #183F2E — black text only reaches 1.79:1, below the 4.5:1 needed for normal-size labels.

Is #183F2E the same as CSS darkslategray?

No — #183F2E 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.

#183F2E Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #183F2E

Not just a swatch — here's how #183F2E works with other colors. Named schemes with #183F2E in its natural role, and a note on why the supporting colors balance it.

Botanical Studio Lead · 5 colors

Lead #183F2E Secondary #496C3E Accent #AB6D00 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.

Coastal Morning Lead · 5 colors

Lead #183F2E Accent #A7C4BB Surface #E1D9BE Secondary #9AA0A0 Anchor #1B3648

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 #183F2E 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.

Luxury Packaging Feature · 5 colors

Feature #183F2E 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 #183F2E Secondary #535F59 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 #183F2E 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 49/100

Moderate

Loosely natural — an earthy edge without being rustic.

Vintage feel 40/100

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 21/100

Low

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

UI accent fit 38/100

Low

Workable accent with care around contrast.

Surface fit 47/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 89/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #183F2E

For UI

For branding

For interior

For fashion

People also use #183F2E 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 11.7:1. Use

Subtle surface Use #C7E2D6 for cards and hover fills. Tint 80

Avoid beside #183F3B — 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 #183F2E 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: #183F2E;
  --color-base-rgb: 24 63 46;
  --color-base-oklch: oklch(33.4% 0.054 162.6);
  --color-50: #F4FBF8;
  --color-100: #E1F4EC;
  --color-200: #C4E8D9;
  --color-300: #9BD5BB;
  --color-400: #74BE9E;
  --color-500: #53A280;
  --color-600: #457D65;
  --color-700: #355A4A;
  --color-800: #263B32;
  --color-900: #19251F;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  bottle-green: {
    50: '#F4FBF8',
    100: '#E1F4EC',
    200: '#C4E8D9',
    300: '#9BD5BB',
    400: '#74BE9E',
    500: '#53A280',
    600: '#457D65',
    700: '#355A4A',
    800: '#263B32',
    900: '#19251F',
  },
}

$base: #183F2E;
$base-ink: #FFFFFF;
$base-50: #F4FBF8;
$base-100: #E1F4EC;
$base-200: #C4E8D9;
$base-300: #9BD5BB;
$base-400: #74BE9E;
$base-500: #53A280;
$base-600: #457D65;
$base-700: #355A4A;
$base-800: #263B32;
$base-900: #19251F;
$base-hover: #133225;
$base-subtle: #AAD5C2;

{
    "color": {
        "base": {
            "value": "#183F2E",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F4FBF8",
                "type": "color"
            },
            "100": {
                "value": "#E1F4EC",
                "type": "color"
            },
            "200": {
                "value": "#C4E8D9",
                "type": "color"
            },
            "300": {
                "value": "#9BD5BB",
                "type": "color"
            },
            "400": {
                "value": "#74BE9E",
                "type": "color"
            },
            "500": {
                "value": "#53A280",
                "type": "color"
            },
            "600": {
                "value": "#457D65",
                "type": "color"
            },
            "700": {
                "value": "#355A4A",
                "type": "color"
            },
            "800": {
                "value": "#263B32",
                "type": "color"
            },
            "900": {
                "value": "#19251F",
                "type": "color"
            }
        }
    }
}