What color is #344C5A?

#344C5A is a dark, muted cyan-blue. In RGB it is rgb(52, 76, 90), and in HSL hsl(202, 27%, 28%).

Is #344C5A accessible as text?

On white, #344C5A has a contrast ratio of 9.02:1 (passes WCAG AA for body text); on black it is 2.33:1 (fails). For text placed on #344C5A, use white for the best readability.

What is the closest Tailwind color to #344C5A?

The nearest Tailwind CSS token is cyan-900 (#104E64).

What colors go well with #344C5A?

#344C5A pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #5B4234. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #344C5A below.

Is #344C5A good for buttons?

#344C5A works well for buttons and highlights, but use white text on #344C5A — black text only reaches 2.33:1, below the 4.5:1 needed for normal-size labels.

Is #344C5A the same as CSS darkslategray?

No — #344C5A is not the CSS named color darkslategray, but darkslategray (#2F4F4F) is the closest CSS named color.

#344C5A Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #344C5A

Not just a swatch — here's how #344C5A works with other colors. Named schemes with #344C5A in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #344C5A Accent #A6C4C0 Surface #DEDABF Secondary #9AA0A0 Anchor #1F344A

Charcoal 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 #344C5A Secondary #AEB4B8 Surface #F1F2F0 Support #7C93A6 Anchor #2E3236

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

Tech Product Signal · 5 colors

Signal #344C5A Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #576D7B

Charcoal is the vivid signal in this product UI — on a near-black surface with cool white, a slate grey and a lighter tint of Charcoal.

Vintage Leather Lead · 5 colors

Lead #344C5A Secondary #6E5216 Surface #E2DCC0 Accent #385245 Anchor #57233D

Charcoal plays the worn-leather lead, deepened by saddle brown and an oxblood anchor, softened by aged cream and cooled by a muted forest green.

Minimal Editorial Surface · 5 colors

Surface #F6F4EF Accent #344C5A Secondary #687176 Support #969386 Ink #16140F

Charcoal 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 Charcoal carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #344C5A 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 39/100

Neutral

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

Softness 41/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 57/100

Moderate

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

Naturalness 0/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 34/100

Low

A faint retro warmth without tipping into sepia.

Luxury 60/100

High

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

Brand distinctiveness 15/100

Very low

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

UI accent fit 49/100

Moderate

Workable accent with care around contrast.

Surface fit 47/100

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 #344C5A

For UI

For branding

For interior

For fashion

People also use #344C5A with

Myrtle Green Charcoal Taupe Platinum

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 9.0:1. Use

Subtle surface Use #D3DCE1 for cards and hover fills. Tint 80

Avoid beside #34405B — 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 #344C5A 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: #344C5A;
  --color-base-rgb: 52 76 90;
  --color-base-oklch: oklch(40.3% 0.038 234.6);
  --color-50: #F5F8FA;
  --color-100: #E5ECF0;
  --color-200: #CBD9E1;
  --color-300: #A6BCC9;
  --color-400: #839FAF;
  --color-500: #638192;
  --color-600: #506572;
  --color-700: #3D4A52;
  --color-800: #2A3237;
  --color-900: #1B2022;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  charcoal: {
    50: '#F5F8FA',
    100: '#E5ECF0',
    200: '#CBD9E1',
    300: '#A6BCC9',
    400: '#839FAF',
    500: '#638192',
    600: '#506572',
    700: '#3D4A52',
    800: '#2A3237',
    900: '#1B2022',
  },
}

$base: #344C5A;
$base-ink: #FFFFFF;
$base-50: #F5F8FA;
$base-100: #E5ECF0;
$base-200: #CBD9E1;
$base-300: #A6BCC9;
$base-400: #839FAF;
$base-500: #638192;
$base-600: #506572;
$base-700: #3D4A52;
$base-800: #2A3237;
$base-900: #1B2022;
$base-hover: #2A3D49;
$base-subtle: #BDCBD3;

{
    "color": {
        "base": {
            "value": "#344C5A",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F5F8FA",
                "type": "color"
            },
            "100": {
                "value": "#E5ECF0",
                "type": "color"
            },
            "200": {
                "value": "#CBD9E1",
                "type": "color"
            },
            "300": {
                "value": "#A6BCC9",
                "type": "color"
            },
            "400": {
                "value": "#839FAF",
                "type": "color"
            },
            "500": {
                "value": "#638192",
                "type": "color"
            },
            "600": {
                "value": "#506572",
                "type": "color"
            },
            "700": {
                "value": "#3D4A52",
                "type": "color"
            },
            "800": {
                "value": "#2A3237",
                "type": "color"
            },
            "900": {
                "value": "#1B2022",
                "type": "color"
            }
        }
    }
}

Palettes built on #344C5A

Color Lab

Pairs with #344C5A

UI roles & guardrails

In real applications

Scales

Every model

Export