What color is #643BA0?

#643BA0 is a medium violet. In RGB it is rgb(100, 59, 160), and in HSL hsl(264, 46%, 43%).

Is #643BA0 accessible as text?

On white, #643BA0 has a contrast ratio of 7.85:1 (passes WCAG AA for body text); on black it is 2.68:1 (fails). For text placed on #643BA0, use white for the best readability.

What is the closest Tailwind color to #643BA0?

The nearest Tailwind CSS token is purple-800 (#6E11B0).

What colors go well with #643BA0?

#643BA0 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #78A03B. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #643BA0 below.

Is #643BA0 good for buttons?

#643BA0 works well for buttons and highlights, but use white text on #643BA0 — black text only reaches 2.68:1, below the 4.5:1 needed for normal-size labels.

Is #643BA0 the same as CSS rebeccapurple?

No — #643BA0 is not the CSS named color rebeccapurple, but rebeccapurple (#663399) is the closest CSS named color.

#643BA0 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #643BA0

Not just a swatch — here's how #643BA0 works with other colors. Named schemes with #643BA0 in its natural role, and a note on why the supporting colors balance it.

Berry & Cream Lead · 5 colors

Lead #643BA0 Surface #F5E6D7 Anchor #5C2140 Accent #E5C2C7 Secondary #332B2F

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

Coastal Morning Lead · 5 colors

Lead #643BA0 Accent #A5C4C4 Surface #E9D6BF Secondary #9AA0A1 Anchor #23334B

Rebecca Purple opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.

Vintage Leather Lead · 5 colors

Lead #643BA0 Secondary #7E4632 Surface #EDD8C2 Accent #355248 Anchor #582237

Rebecca Purple 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 #643BA0 Anchor #3B2923 Surface #F3E1D1 Accent #739F7E Secondary #3C3734

Rebecca Purple 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 #643BA0 Secondary #83789B Support #9C9088 Ink #18140F

Rebecca Purple 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 Rebecca Purple carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #643BA0 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 33/100

Cool

Reads cool and recessive — calming, technical, good for trust-led UI.

Softness 34/100

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 39/100

Low

A faint retro warmth without tipping into sepia.

Luxury 58/100

Moderate

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

Brand distinctiveness 42/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 90/100

Very high

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

Surface fit 10/100

Very low

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

Print safety 80/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #643BA0

For UI

For branding

For interior

For fashion

People also use #643BA0 with

Tanzanite Plum Moss Green Gainsboro Russian Violet

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 7.9:1. Use

Subtle surface Use #E0D8EC for cards and hover fills. Tint 80

Avoid beside #853BA0 — 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 #643BA0 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: #643BA0;
  --color-base-rgb: 100 59 160;
  --color-base-oklch: oklch(45.5% 0.157 298.7);
  --color-50: #F7F3FB;
  --color-100: #E9E1F5;
  --color-200: #D2C4E9;
  --color-300: #B29AD5;
  --color-400: #9173BF;
  --color-500: #7252A3;
  --color-600: #5B447E;
  --color-700: #44355A;
  --color-800: #2E253C;
  --color-900: #1D1825;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  rebecca-purple: {
    50: '#F7F3FB',
    100: '#E9E1F5',
    200: '#D2C4E9',
    300: '#B29AD5',
    400: '#9173BF',
    500: '#7252A3',
    600: '#5B447E',
    700: '#44355A',
    800: '#2E253C',
    900: '#1D1825',
  },
}

$base: #643BA0;
$base-ink: #FFFFFF;
$base-50: #F7F3FB;
$base-100: #E9E1F5;
$base-200: #D2C4E9;
$base-300: #B29AD5;
$base-400: #9173BF;
$base-500: #7252A3;
$base-600: #5B447E;
$base-700: #44355A;
$base-800: #2E253C;
$base-900: #1D1825;
$base-hover: #502F80;
$base-subtle: #D0C4E3;

{
    "color": {
        "base": {
            "value": "#643BA0",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F7F3FB",
                "type": "color"
            },
            "100": {
                "value": "#E9E1F5",
                "type": "color"
            },
            "200": {
                "value": "#D2C4E9",
                "type": "color"
            },
            "300": {
                "value": "#B29AD5",
                "type": "color"
            },
            "400": {
                "value": "#9173BF",
                "type": "color"
            },
            "500": {
                "value": "#7252A3",
                "type": "color"
            },
            "600": {
                "value": "#5B447E",
                "type": "color"
            },
            "700": {
                "value": "#44355A",
                "type": "color"
            },
            "800": {
                "value": "#2E253C",
                "type": "color"
            },
            "900": {
                "value": "#1D1825",
                "type": "color"
            }
        }
    }
}

Palettes built on #643BA0

Color Lab

Pairs with #643BA0

UI roles & guardrails

In real applications

Scales

Every model

Export