What color is #403442?

#403442 is a dark low-chroma warm gray with a subtle warm cast. In RGB it is rgb(64, 52, 66), and in HSL hsl(291, 12%, 23%).

Is #403442 accessible as text?

On white, #403442 has a contrast ratio of 11.75:1 (passes WCAG AA for body text); on black it is 1.79:1 (fails). For text placed on #403442, use white for the best readability.

What is the closest Tailwind color to #403442?

The nearest Tailwind CSS token is zinc-700 (#3F3F46).

What colors go well with #403442?

As a neutral, #403442 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 #403442 the same as CSS darkslategray?

No — #403442 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.

#403442 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #403442

Not just a swatch — here's how #403442 works with other colors. Named schemes with #403442 in its natural role, and a note on why the supporting colors balance it.

Vintage Leather Lead · 5 colors

Lead #403442 Secondary #7E472F Surface #ECD8C1 Accent #345249 Anchor #592234

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

Japanese Sand Base · 5 colors

Base #403442 Surface #F1E8DC Highlight #F7F0E7 Secondary #BDADA1 Ink #2C2723

Onyx sets a calm, sun-bleached base here, wrapped in bone and paper off-whites and a soft greige, with a single ink accent for wabi-sabi restraint.

Luxury Packaging Feature · 5 colors

Feature #403442 Anchor #141210 Accent #D89953 Secondary #2E262F Surface #F3EDE3

Onyx 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 #F8F4EF Accent #403442 Secondary #615D62 Support #9C9087 Ink #18140F

Onyx 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 Onyx carrying the quiet middle.

Berry & Cream Lead · 5 colors

Lead #403442 Surface #F5E6D7 Anchor #5D203E Accent #E5C2C6 Secondary #332B2E

Onyx sits between cream and a deep berry here, softened by a blush accent and grounded by charcoal.

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Color Lab

How #403442 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 50/100

Neutral

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

Softness 36/100

Low

Middle-weight — neither delicate nor heavy.

Depth 62/100

High

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

Naturalness 1/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 38/100

Low

A faint retro warmth without tipping into sepia.

Luxury 64/100

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 33/100

Low

Workable accent with care around contrast.

Surface fit 54/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 97/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #403442

For UI

For branding

For interior

For fashion

People also use #403442 with

Outer Space Onyx 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 11.7:1. Use

Subtle surface Use #DAD4DB for cards and hover fills. Tint 80

Avoid beside #42343F — 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 #403442 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: #403442;
  --color-base-rgb: 64 52 66;
  --color-base-oklch: oklch(34.3% 0.029 321.5);
  --color-50: #F8F6F8;
  --color-100: #ECE8ED;
  --color-200: #DAD1DB;
  --color-300: #BDB0BF;
  --color-400: #A08FA3;
  --color-500: #827085;
  --color-600: #665968;
  --color-700: #4B434C;
  --color-800: #322E33;
  --color-900: #201D20;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  onyx: {
    50: '#F8F6F8',
    100: '#ECE8ED',
    200: '#DAD1DB',
    300: '#BDB0BF',
    400: '#A08FA3',
    500: '#827085',
    600: '#665968',
    700: '#4B434C',
    800: '#322E33',
    900: '#201D20',
  },
}

$base: #403442;
$base-ink: #FFFFFF;
$base-50: #F8F6F8;
$base-100: #ECE8ED;
$base-200: #DAD1DB;
$base-300: #BDB0BF;
$base-400: #A08FA3;
$base-500: #827085;
$base-600: #665968;
$base-700: #4B434C;
$base-800: #322E33;
$base-900: #201D20;
$base-hover: #332935;
$base-subtle: #C8BFC9;

{
    "color": {
        "base": {
            "value": "#403442",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F8F6F8",
                "type": "color"
            },
            "100": {
                "value": "#ECE8ED",
                "type": "color"
            },
            "200": {
                "value": "#DAD1DB",
                "type": "color"
            },
            "300": {
                "value": "#BDB0BF",
                "type": "color"
            },
            "400": {
                "value": "#A08FA3",
                "type": "color"
            },
            "500": {
                "value": "#827085",
                "type": "color"
            },
            "600": {
                "value": "#665968",
                "type": "color"
            },
            "700": {
                "value": "#4B434C",
                "type": "color"
            },
            "800": {
                "value": "#322E33",
                "type": "color"
            },
            "900": {
                "value": "#201D20",
                "type": "color"
            }
        }
    }
}