What color is #403148?

#403148 is a dark, muted violet. In RGB it is rgb(64, 49, 72), and in HSL hsl(279, 19%, 24%).

Is #403148 accessible as text?

On white, #403148 has a contrast ratio of 11.99:1 (passes WCAG AA for body text); on black it is 1.75:1 (fails). For text placed on #403148, use white for the best readability.

What is the closest Tailwind color to #403148?

The nearest Tailwind CSS token is mauve-700 (#463947).

What colors go well with #403148?

#403148 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #3A4932. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #403148 below.

Is #403148 good for buttons?

#403148 works well for buttons and highlights, but use white text on #403148 — black text only reaches 1.75:1, below the 4.5:1 needed for normal-size labels.

Is #403148 the same as CSS darkslategray?

No — #403148 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.

#403148 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #403148

Not just a swatch — here's how #403148 works with other colors. Named schemes with #403148 in its natural role, and a note on why the supporting colors balance it.

Vintage Leather Lead · 5 colors

Lead #403148 Secondary #7E4630 Surface #ECD8C1 Accent #355249 Anchor #592235

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 #403148 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 #403148 Anchor #141210 Accent #D89954 Secondary #2C2630 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 #403148 Secondary #615B64 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 #403148 Surface #F5E6D7 Anchor #5D203F Accent #E5C2C6 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 #403148 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 49/100

Neutral

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

Softness 34/100

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 40/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 66/100

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 37/100

Low

Workable accent with care around contrast.

Surface fit 50/100

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 #403148

For UI

For branding

For interior

For fashion

People also use #403148 with

Charcoal Onyx Brunswick Green Gainsboro

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 12.0:1. Use

Subtle surface Use #DAD3DE for cards and hover fills. Tint 80

Avoid beside #483249 — 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 #403148 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: #403148;
  --color-base-rgb: 64 49 72;
  --color-base-oklch: oklch(34.0% 0.044 313.6);
  --color-50: #F8F6F9;
  --color-100: #ECE7EF;
  --color-200: #D9CEDE;
  --color-300: #BBABC4;
  --color-400: #9E89A9;
  --color-500: #7F6A8B;
  --color-600: #64556D;
  --color-700: #4A404F;
  --color-800: #322C35;
  --color-900: #1F1C21;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  onyx: {
    50: '#F8F6F9',
    100: '#ECE7EF',
    200: '#D9CEDE',
    300: '#BBABC4',
    400: '#9E89A9',
    500: '#7F6A8B',
    600: '#64556D',
    700: '#4A404F',
    800: '#322C35',
    900: '#1F1C21',
  },
}

$base: #403148;
$base-ink: #FFFFFF;
$base-50: #F8F6F9;
$base-100: #ECE7EF;
$base-200: #D9CEDE;
$base-300: #BBABC4;
$base-400: #9E89A9;
$base-500: #7F6A8B;
$base-600: #64556D;
$base-700: #4A404F;
$base-800: #322C35;
$base-900: #1F1C21;
$base-hover: #34283A;
$base-subtle: #C7BCCD;

{
    "color": {
        "base": {
            "value": "#403148",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F8F6F9",
                "type": "color"
            },
            "100": {
                "value": "#ECE7EF",
                "type": "color"
            },
            "200": {
                "value": "#D9CEDE",
                "type": "color"
            },
            "300": {
                "value": "#BBABC4",
                "type": "color"
            },
            "400": {
                "value": "#9E89A9",
                "type": "color"
            },
            "500": {
                "value": "#7F6A8B",
                "type": "color"
            },
            "600": {
                "value": "#64556D",
                "type": "color"
            },
            "700": {
                "value": "#4A404F",
                "type": "color"
            },
            "800": {
                "value": "#322C35",
                "type": "color"
            },
            "900": {
                "value": "#1F1C21",
                "type": "color"
            }
        }
    }
}