What color is #403A48?

#403A48 is a dark low-chroma blue-gray with a subtle blue cast. In RGB it is rgb(64, 58, 72), and in HSL hsl(266, 11%, 25%).

Is #403A48 accessible as text?

On white, #403A48 has a contrast ratio of 10.96:1 (passes WCAG AA for body text); on black it is 1.92:1 (fails). For text placed on #403A48, use white for the best readability.

What is the closest Tailwind color to #403A48?

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

What colors go well with #403A48?

As a neutral, #403A48 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 #403A48 the same as CSS darkslategray?

No — #403A48 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.

#403A48 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #403A48

Not just a swatch — here's how #403A48 works with other colors. Named schemes with #403A48 in its natural role, and a note on why the supporting colors balance it.

Vintage Leather Lead · 5 colors

Lead #403A48 Secondary #7E4631 Surface #EDD8C1 Accent #355248 Anchor #592236

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 #403A48 Surface #F2E8DD Highlight #F8F0E7 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 #403A48 Anchor #141210 Accent #D99855 Secondary #2B2631 Surface #F3ECE3

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 #403A48 Secondary #646267 Support #9C9088 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 #403A48 Surface #F5E6D7 Anchor #5C2140 Accent #E5C2C7 Secondary #332B2F

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

Build a working theme in the generator →

Color Lab

How #403A48 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 48/100

Neutral

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

Softness 38/100

Low

Middle-weight — neither delicate nor heavy.

Depth 60/100

High

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

Naturalness 0/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 35/100

Low

A faint retro warmth without tipping into sepia.

Luxury 63/100

High

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

Brand distinctiveness 10/100

Very low

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

UI accent fit 35/100

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 #403A48

For UI

For branding

For interior

For fashion

People also use #403A48 with

Outer Space 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 11.0:1. Use

Subtle surface Use #D8D6DC for cards and hover fills. Tint 80

Avoid beside #433947 — 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 #403A48 at work across the surfaces designers actually ship.

Website / UI

Northwind Sign up

Build faster.

A working theme, generated in seconds.

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: #403A48;
  --color-base-rgb: 64 58 72;
  --color-base-oklch: oklch(36.0% 0.025 304.6);
  --color-50: #F7F6F8;
  --color-100: #EAE8ED;
  --color-200: #D6D2DB;
  --color-300: #B7B1BF;
  --color-400: #9890A2;
  --color-500: #797184;
  --color-600: #605A68;
  --color-700: #47434C;
  --color-800: #302E33;
  --color-900: #1E1D20;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  onyx: {
    50: '#F7F6F8',
    100: '#EAE8ED',
    200: '#D6D2DB',
    300: '#B7B1BF',
    400: '#9890A2',
    500: '#797184',
    600: '#605A68',
    700: '#47434C',
    800: '#302E33',
    900: '#1E1D20',
  },
}

$base: #403A48;
$base-ink: #FFFFFF;
$base-50: #F7F6F8;
$base-100: #EAE8ED;
$base-200: #D6D2DB;
$base-300: #B7B1BF;
$base-400: #9890A2;
$base-500: #797184;
$base-600: #605A68;
$base-700: #47434C;
$base-800: #302E33;
$base-900: #1E1D20;
$base-hover: #322D39;
$base-subtle: #C5C1CA;

{
    "color": {
        "base": {
            "value": "#403A48",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F7F6F8",
                "type": "color"
            },
            "100": {
                "value": "#EAE8ED",
                "type": "color"
            },
            "200": {
                "value": "#D6D2DB",
                "type": "color"
            },
            "300": {
                "value": "#B7B1BF",
                "type": "color"
            },
            "400": {
                "value": "#9890A2",
                "type": "color"
            },
            "500": {
                "value": "#797184",
                "type": "color"
            },
            "600": {
                "value": "#605A68",
                "type": "color"
            },
            "700": {
                "value": "#47434C",
                "type": "color"
            },
            "800": {
                "value": "#302E33",
                "type": "color"
            },
            "900": {
                "value": "#1E1D20",
                "type": "color"
            }
        }
    }
}