What color is #643B7C?

#643B7C is a dark violet. In RGB it is rgb(100, 59, 124), and in HSL hsl(278, 36%, 36%).

Is #643B7C accessible as text?

On white, #643B7C has a contrast ratio of 8.54:1 (passes WCAG AA for body text); on black it is 2.46:1 (fails). For text placed on #643B7C, use white for the best readability.

What is the closest Tailwind color to #643B7C?

The nearest Tailwind CSS token is fuchsia-900 (#721378).

What colors go well with #643B7C?

#643B7C pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #537D3B. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #643B7C below.

Is #643B7C good for buttons?

#643B7C works well for buttons and highlights, but use white text on #643B7C — black text only reaches 2.46:1, below the 4.5:1 needed for normal-size labels.

Is #643B7C the same as CSS rebeccapurple?

No — #643B7C is not the CSS named color rebeccapurple, but rebeccapurple (#663399) is the closest CSS named color.

#643B7C Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #643B7C

Not just a swatch — here's how #643B7C works with other colors. Named schemes with #643B7C in its natural role, and a note on why the supporting colors balance it.

Berry & Cream Lead · 5 colors

Lead #643B7C Surface #F5E6D7 Anchor #5C213F Accent #E5C2C7 Secondary #332B2F

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

Vintage Leather Lead · 5 colors

Lead #643B7C Secondary #7E4630 Surface #EDD8C1 Accent #355249 Anchor #592235

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

Modern Café Dominant · 5 colors

Dominant #643B7C Anchor #3B2923 Surface #F2E1D1 Accent #9F9362 Secondary #3C3733

Eminence anchors this café scheme as the warm mid-tone, lifted by latte cream and a muted sage accent and grounded by espresso brown and a warm charcoal.

Minimal Editorial Surface · 5 colors

Surface #F8F4EF Accent #643B7C Secondary #7F7189 Support #9C9088 Ink #18140F

Eminence 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 Eminence carrying the quiet middle.

Tech Product Signal · 5 colors

Signal #643B7C Surface #14161A Highlight #F4F6F8 Secondary #5C6573 Accent #85609D

Eminence is the vivid signal in this product UI — on a near-black surface with cool white, a slate grey and a lighter tint of Eminence.

Build a working theme in the generator →

Color Lab

How #643B7C 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 45/100

Neutral

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

Softness 36/100

Low

Middle-weight — neither delicate nor heavy.

Depth 57/100

Moderate

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

Naturalness 0/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 55/100

Moderate

Faded, nostalgic quality — editorial, heritage and retro work.

Luxury 64/100

High

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

Brand distinctiveness 30/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 82/100

Very high

Strong interactive accent — visible and can carry a legible label.

Surface fit 23/100

Low

Too saturated or mid-toned for big areas — keep it to accents.

Print safety 87/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #643B7C

For UI

For branding

For interior

For fashion

People also use #643B7C with

Dark Slate Blue Plum Fern Green Gainsboro Onyx

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 8.5:1. Use

Subtle surface Use #E1D6E7 for cards and hover fills. Tint 80

Avoid beside #7B3B7D — 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 #643B7C 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: #643B7C;
  --color-base-rgb: 100 59 124;
  --color-base-oklch: oklch(43.1% 0.112 311.7);
  --color-50: #F8F4FA;
  --color-100: #EDE3F2;
  --color-200: #DAC8E5;
  --color-300: #BEA0CF;
  --color-400: #A17BB7;
  --color-500: #835B9A;
  --color-600: #674A77;
  --color-700: #4B3956;
  --color-800: #332839;
  --color-900: #201A23;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  eminence: {
    50: '#F8F4FA',
    100: '#EDE3F2',
    200: '#DAC8E5',
    300: '#BEA0CF',
    400: '#A17BB7',
    500: '#835B9A',
    600: '#674A77',
    700: '#4B3956',
    800: '#332839',
    900: '#201A23',
  },
}

$base: #643B7C;
$base-ink: #FFFFFF;
$base-50: #F8F4FA;
$base-100: #EDE3F2;
$base-200: #DAC8E5;
$base-300: #BEA0CF;
$base-400: #A17BB7;
$base-500: #835B9A;
$base-600: #674A77;
$base-700: #4B3956;
$base-800: #332839;
$base-900: #201A23;
$base-hover: #502F64;
$base-subtle: #D2C1DB;

{
    "color": {
        "base": {
            "value": "#643B7C",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F8F4FA",
                "type": "color"
            },
            "100": {
                "value": "#EDE3F2",
                "type": "color"
            },
            "200": {
                "value": "#DAC8E5",
                "type": "color"
            },
            "300": {
                "value": "#BEA0CF",
                "type": "color"
            },
            "400": {
                "value": "#A17BB7",
                "type": "color"
            },
            "500": {
                "value": "#835B9A",
                "type": "color"
            },
            "600": {
                "value": "#674A77",
                "type": "color"
            },
            "700": {
                "value": "#4B3956",
                "type": "color"
            },
            "800": {
                "value": "#332839",
                "type": "color"
            },
            "900": {
                "value": "#201A23",
                "type": "color"
            }
        }
    }
}