What color is #034C39?

#034C39 is a very dark, vivid teal-green. In RGB it is rgb(3, 76, 57), and in HSL hsl(164, 92%, 15%).

Is #034C39 accessible as text?

On white, #034C39 has a contrast ratio of 10.02:1 (passes WCAG AA for body text); on black it is 2.10:1 (fails). For text placed on #034C39, use white for the best readability.

What is the closest Tailwind color to #034C39?

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

What colors go well with #034C39?

#034C39 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #490316. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #034C39 below.

Is #034C39 good for buttons?

#034C39 works well for buttons and highlights, but use white text on #034C39 — black text only reaches 2.10:1, below the 4.5:1 needed for normal-size labels.

Is #034C39 the same as CSS darkslategray?

No — #034C39 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.

#034C39 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #034C39

Not just a swatch — here's how #034C39 works with other colors. Named schemes with #034C39 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #034C39 Accent #A7C4BB Surface #E1D9BE Secondary #9AA0A0 Anchor #1B3549

Brunswick 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 #034C39 Secondary #ADB4B7 Surface #F1F2F0 Support #7895A3 Anchor #2D3236

Brunswick 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 #034C39 Secondary #734F19 Surface #E5DBC0 Accent #3B5141 Anchor #5B231F

Brunswick 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 #034C39 Anchor #141210 Accent #BDA84C Secondary #1F2C27 Surface #F1EDE3

Brunswick 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 #034C39 Secondary #586B64 Support #989286 Ink #16140F

Brunswick 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 Brunswick Green carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #034C39 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 40/100

Neutral

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

Softness 35/100

Low

Middle-weight — neither delicate nor heavy.

Depth 61/100

High

Mid depth — usable as an accent or a muted ground.

Naturalness 51/100

Moderate

Loosely natural — an earthy edge without being rustic.

Vintage feel 47/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 66/100

High

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

Brand distinctiveness 28/100

Low

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

UI accent fit 54/100

Moderate

Workable accent with care around contrast.

Surface fit 39/100

Low

Usable as a tinted surface in measured doses.

Print safety 86/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #034C39

For UI

For branding

For interior

For fashion

People also use #034C39 with

Dark Green Prussian Blue 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 10.0:1. Use

Subtle surface Use #B7F0E1 for cards and hover fills. Tint 80

Avoid beside #034549 — 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 #034C39 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: #034C39;
  --color-base-rgb: 3 76 57;
  --color-base-oklch: oklch(37.1% 0.073 168.8);
  --color-50: #F0FEFB;
  --color-100: #D8FDF3;
  --color-200: #B1FCE8;
  --color-300: #7CF3D3;
  --color-400: #4DE5BD;
  --color-500: #29CBA0;
  --color-600: #289A7C;
  --color-700: #226D59;
  --color-800: #1A473B;
  --color-900: #122B24;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  brunswick-green: {
    50: '#F0FEFB',
    100: '#D8FDF3',
    200: '#B1FCE8',
    300: '#7CF3D3',
    400: '#4DE5BD',
    500: '#29CBA0',
    600: '#289A7C',
    700: '#226D59',
    800: '#1A473B',
    900: '#122B24',
  },
}

$base: #034C39;
$base-ink: #FFFFFF;
$base-50: #F0FEFB;
$base-100: #D8FDF3;
$base-200: #B1FCE8;
$base-300: #7CF3D3;
$base-400: #4DE5BD;
$base-500: #29CBA0;
$base-600: #289A7C;
$base-700: #226D59;
$base-800: #1A473B;
$base-900: #122B24;
$base-hover: #023B2C;
$base-subtle: #91EBD3;

{
    "color": {
        "base": {
            "value": "#034C39",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0FEFB",
                "type": "color"
            },
            "100": {
                "value": "#D8FDF3",
                "type": "color"
            },
            "200": {
                "value": "#B1FCE8",
                "type": "color"
            },
            "300": {
                "value": "#7CF3D3",
                "type": "color"
            },
            "400": {
                "value": "#4DE5BD",
                "type": "color"
            },
            "500": {
                "value": "#29CBA0",
                "type": "color"
            },
            "600": {
                "value": "#289A7C",
                "type": "color"
            },
            "700": {
                "value": "#226D59",
                "type": "color"
            },
            "800": {
                "value": "#1A473B",
                "type": "color"
            },
            "900": {
                "value": "#122B24",
                "type": "color"
            }
        }
    }
}

Palettes built on #034C39

Color Lab

Pairs with #034C39

UI roles & guardrails

In real applications

Scales

Every model

Export