What color is #40323A?

#40323A is a dark low-chroma warm gray with a subtle warm cast. In RGB it is rgb(64, 50, 58), and in HSL hsl(326, 12%, 22%).

Is #40323A accessible as text?

On white, #40323A has a contrast ratio of 12.10:1 (passes WCAG AA for body text); on black it is 1.74:1 (fails). For text placed on #40323A, use white for the best readability.

What is the closest Tailwind color to #40323A?

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

What colors go well with #40323A?

As a neutral, #40323A 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 #40323A the same as CSS darkslategray?

No — #40323A 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.

#40323A Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #40323A

Not just a swatch — here's how #40323A works with other colors. Named schemes with #40323A in its natural role, and a note on why the supporting colors balance it.

Vintage Leather Lead · 5 colors

Lead #40323A Secondary #7D472C Surface #ECD8C1 Accent #454F38 Anchor #5A2232

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 #40323A Surface #F1E8DC Highlight #F7F1E7 Secondary #BCADA0 Ink #2B2723

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 #40323A Anchor #141210 Accent #D59B51 Secondary #30252B 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 #F7F4EF Accent #40323A Secondary #605B5E 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 #40323A Surface #F4E6D7 Anchor #5E203C Accent #E6C2C4 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 #40323A 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 53/100

Neutral

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

Softness 36/100

Low

Middle-weight — neither delicate nor heavy.

Depth 62/100

High

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

Naturalness 4/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 39/100

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 9/100

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 56/100

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 #40323A

For UI

For branding

For interior

For fashion

People also use #40323A with

Eggplant Onyx Gainsboro Taupe

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 #DBD4D8 for cards and hover fills. Tint 80

Avoid beside #3F3135 — 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 #40323A 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: #40323A;
  --color-base-rgb: 64 50 58;
  --color-base-oklch: oklch(33.6% 0.024 343.2);
  --color-50: #F8F6F7;
  --color-100: #EDE8EB;
  --color-200: #DBD1D7;
  --color-300: #BFB0B9;
  --color-400: #A38F9A;
  --color-500: #85707C;
  --color-600: #685962;
  --color-700: #4C4348;
  --color-800: #332E31;
  --color-900: #201D1F;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  onyx: {
    50: '#F8F6F7',
    100: '#EDE8EB',
    200: '#DBD1D7',
    300: '#BFB0B9',
    400: '#A38F9A',
    500: '#85707C',
    600: '#685962',
    700: '#4C4348',
    800: '#332E31',
    900: '#201D1F',
  },
}

$base: #40323A;
$base-ink: #FFFFFF;
$base-50: #F8F6F7;
$base-100: #EDE8EB;
$base-200: #DBD1D7;
$base-300: #BFB0B9;
$base-400: #A38F9A;
$base-500: #85707C;
$base-600: #685962;
$base-700: #4C4348;
$base-800: #332E31;
$base-900: #201D1F;
$base-hover: #32272E;
$base-subtle: #C9BEC4;

{
    "color": {
        "base": {
            "value": "#40323A",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F8F6F7",
                "type": "color"
            },
            "100": {
                "value": "#EDE8EB",
                "type": "color"
            },
            "200": {
                "value": "#DBD1D7",
                "type": "color"
            },
            "300": {
                "value": "#BFB0B9",
                "type": "color"
            },
            "400": {
                "value": "#A38F9A",
                "type": "color"
            },
            "500": {
                "value": "#85707C",
                "type": "color"
            },
            "600": {
                "value": "#685962",
                "type": "color"
            },
            "700": {
                "value": "#4C4348",
                "type": "color"
            },
            "800": {
                "value": "#332E31",
                "type": "color"
            },
            "900": {
                "value": "#201D1F",
                "type": "color"
            }
        }
    }
}