What color is #173443?

#173443 is a dark cyan-blue. In RGB it is rgb(23, 52, 67), and in HSL hsl(200, 49%, 18%).

Is #173443 accessible as text?

On white, #173443 has a contrast ratio of 13.05:1 (passes WCAG AA for body text); on black it is 1.61:1 (fails). For text placed on #173443, use white for the best readability.

What is the closest Tailwind color to #173443?

The nearest Tailwind CSS token is cyan-950 (#053345).

What colors go well with #173443?

#173443 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #442617. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #173443 below.

Is #173443 good for buttons?

#173443 works well for buttons and highlights, but use white text on #173443 — black text only reaches 1.61:1, below the 4.5:1 needed for normal-size labels.

Is #173443 the same as CSS darkslategray?

No — #173443 is not the CSS named color darkslategray, but darkslategray (#2F4F4F) is the closest CSS named color.

#173443 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #173443

Not just a swatch — here's how #173443 works with other colors. Named schemes with #173443 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #173443 Accent #A6C4C0 Surface #DEDABF Secondary #9AA0A0 Anchor #1F344A

Gunmetal Gray 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 #173443 Secondary #AEB4B8 Surface #F1F2F0 Support #7B93A6 Anchor #2E3236

Gunmetal Gray 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 #173443 Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #3A5462

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

Vintage Leather Lead · 5 colors

Lead #173443 Secondary #6F5216 Surface #E2DCC0 Accent #385244 Anchor #56233D

Gunmetal Gray 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 #173443 Secondary #4D575D Support #969386 Ink #16140F

Gunmetal Gray 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 Gunmetal Gray carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #173443 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 37/100

Cool

Reads cool and recessive — calming, technical, good for trust-led UI.

Softness 32/100

Low

Firm and assertive — carries weight and contrast.

Depth 66/100

High

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

Naturalness 0/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 29/100

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 17/100

Very low

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

UI accent fit 30/100

Low

Weak as an action color — too pale, too dark or too muted to signal.

Surface fit 51/100

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 #173443

For UI

For branding

For interior

For fashion

People also use #173443 with

Hunter Green Navy Bistre Platinum Charcoal

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 13.1:1. Use

Subtle surface Use #C6DAE4 for cards and hover fills. Tint 80

Avoid beside #172644 — 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 #173443 at work across the surfaces designers actually ship.

Website / UI

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Build faster.

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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: #173443;
  --color-base-rgb: 23 52 67;
  --color-base-oklch: oklch(31.0% 0.044 233.2);
  --color-50: #F3F9FB;
  --color-100: #E0EEF5;
  --color-200: #C2DDEA;
  --color-300: #98C2D7;
  --color-400: #70A7C2;
  --color-500: #4F89A6;
  --color-600: #426B7F;
  --color-700: #344E5B;
  --color-800: #25343C;
  --color-900: #182125;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  gunmetal-gray: {
    50: '#F3F9FB',
    100: '#E0EEF5',
    200: '#C2DDEA',
    300: '#98C2D7',
    400: '#70A7C2',
    500: '#4F89A6',
    600: '#426B7F',
    700: '#344E5B',
    800: '#25343C',
    900: '#182125',
  },
}

$base: #173443;
$base-ink: #FFFFFF;
$base-50: #F3F9FB;
$base-100: #E0EEF5;
$base-200: #C2DDEA;
$base-300: #98C2D7;
$base-400: #70A7C2;
$base-500: #4F89A6;
$base-600: #426B7F;
$base-700: #344E5B;
$base-800: #25343C;
$base-900: #182125;
$base-hover: #132B37;
$base-subtle: #A9C8D8;

{
    "color": {
        "base": {
            "value": "#173443",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3F9FB",
                "type": "color"
            },
            "100": {
                "value": "#E0EEF5",
                "type": "color"
            },
            "200": {
                "value": "#C2DDEA",
                "type": "color"
            },
            "300": {
                "value": "#98C2D7",
                "type": "color"
            },
            "400": {
                "value": "#70A7C2",
                "type": "color"
            },
            "500": {
                "value": "#4F89A6",
                "type": "color"
            },
            "600": {
                "value": "#426B7F",
                "type": "color"
            },
            "700": {
                "value": "#344E5B",
                "type": "color"
            },
            "800": {
                "value": "#25343C",
                "type": "color"
            },
            "900": {
                "value": "#182125",
                "type": "color"
            }
        }
    }
}