What color is #303645?

#303645 is a dark low-chroma blue-gray with a subtle blue cast. In RGB it is rgb(48, 54, 69), and in HSL hsl(223, 18%, 23%).

Is #303645 accessible as text?

On white, #303645 has a contrast ratio of 12.07:1 (passes WCAG AA for body text); on black it is 1.74:1 (fails). For text placed on #303645, use white for the best readability.

What is the closest Tailwind color to #303645?

The nearest Tailwind CSS token is gray-700 (#364153).

What colors go well with #303645?

As a neutral, #303645 pairs cleanly with white, off-white and light grays for text, and sits under accent hues like blue, violet, emerald or warm orange — use it as a dark surface or high-contrast base and let the accent carry the color.

Is #303645 the same as CSS darkslategray?

No — #303645 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.

#303645 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #303645

Not just a swatch — here's how #303645 works with other colors. Named schemes with #303645 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #303645 Accent #A5C4C2 Surface #EAD5C0 Secondary #9AA0A1 Anchor #21344A

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 #303645 Secondary #AEB4B8 Surface #F1F2F0 Support #7D92A7 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 #303645 Surface #14161A Highlight #F4F6F8 Secondary #5B6672 Accent #505665

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 #303645 Secondary #7F4535 Surface #EED7C2 Accent #365246 Anchor #58223A

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 #F8F4EF Accent #303645 Secondary #595C61 Support #9D8F88 Ink #18140F

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.

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Color Lab

How #303645 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 43/100

Neutral

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

Softness 35/100

Low

Middle-weight — neither delicate nor heavy.

Depth 63/100

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 65/100

High

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

Brand distinctiveness 11/100

Very low

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

UI accent fit 31/100

Low

Workable accent with care around contrast.

Surface fit 55/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 95/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #303645

For UI

For branding

For interior

For fashion

People also use #303645 with

Feldgrau Gunmetal Gray Taupe Gainsboro 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 12.1:1. Use

Subtle surface Use #D3D6DD for cards and hover fills. Tint 80

Avoid beside #313045 — 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 #303645 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: #303645;
  --color-base-rgb: 48 54 69;
  --color-base-oklch: oklch(33.4% 0.028 267.8);
  --color-50: #F6F7F9;
  --color-100: #E7E9EE;
  --color-200: #CFD3DE;
  --color-300: #ACB3C3;
  --color-400: #8A93A8;
  --color-500: #6B748A;
  --color-600: #565C6C;
  --color-700: #40444F;
  --color-800: #2C2F35;
  --color-900: #1C1E21;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  gunmetal-gray: {
    50: '#F6F7F9',
    100: '#E7E9EE',
    200: '#CFD3DE',
    300: '#ACB3C3',
    400: '#8A93A8',
    500: '#6B748A',
    600: '#565C6C',
    700: '#40444F',
    800: '#2C2F35',
    900: '#1C1E21',
  },
}

$base: #303645;
$base-ink: #FFFFFF;
$base-50: #F6F7F9;
$base-100: #E7E9EE;
$base-200: #CFD3DE;
$base-300: #ACB3C3;
$base-400: #8A93A8;
$base-500: #6B748A;
$base-600: #565C6C;
$base-700: #40444F;
$base-800: #2C2F35;
$base-900: #1C1E21;
$base-hover: #262B37;
$base-subtle: #BCC1CC;

{
    "color": {
        "base": {
            "value": "#303645",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F6F7F9",
                "type": "color"
            },
            "100": {
                "value": "#E7E9EE",
                "type": "color"
            },
            "200": {
                "value": "#CFD3DE",
                "type": "color"
            },
            "300": {
                "value": "#ACB3C3",
                "type": "color"
            },
            "400": {
                "value": "#8A93A8",
                "type": "color"
            },
            "500": {
                "value": "#6B748A",
                "type": "color"
            },
            "600": {
                "value": "#565C6C",
                "type": "color"
            },
            "700": {
                "value": "#40444F",
                "type": "color"
            },
            "800": {
                "value": "#2C2F35",
                "type": "color"
            },
            "900": {
                "value": "#1C1E21",
                "type": "color"
            }
        }
    }
}