What color is #643B92?

#643B92 is a medium violet. In RGB it is rgb(100, 59, 146), and in HSL hsl(268, 42%, 40%).

Is #643B92 accessible as text?

On white, #643B92 has a contrast ratio of 8.13:1 (passes WCAG AA for body text); on black it is 2.58:1 (fails). For text placed on #643B92, use white for the best readability.

What is the closest Tailwind color to #643B92?

The nearest Tailwind CSS token is purple-900 (#59168B).

What colors go well with #643B92?

#643B92 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #69913B. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #643B92 below.

Is #643B92 good for buttons?

#643B92 works well for buttons and highlights, but use white text on #643B92 — black text only reaches 2.58:1, below the 4.5:1 needed for normal-size labels.

Is #643B92 the same as CSS rebeccapurple?

No — #643B92 is not the CSS named color rebeccapurple, but rebeccapurple (#663399) is the closest CSS named color.

#643B92 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #643B92

Not just a swatch — here's how #643B92 works with other colors. Named schemes with #643B92 in its natural role, and a note on why the supporting colors balance it.

Berry & Cream Lead · 5 colors

Lead #643B92 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 #643B92 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 #643B92 Secondary #7E4631 Surface #EDD8C1 Accent #355248 Anchor #592236

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 #643B92 Anchor #3B2923 Surface #F2E1D1 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 #643B92 Secondary #817594 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 #643B92 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 38/100

Cool

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

Softness 35/100

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 45/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 60/100

High

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

Brand distinctiveness 38/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 88/100

Very high

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

Surface fit 14/100

Very low

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

Print safety 83/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #643B92

For UI

For branding

For interior

For fashion

People also use #643B92 with

Cerulean Plum Olive Drab 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 8.1:1. Use

Subtle surface Use #E0D7EA for cards and hover fills. Tint 80

Avoid beside #803B91 — 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 #643B92 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: #643B92;
  --color-base-rgb: 100 59 146;
  --color-base-oklch: oklch(44.5% 0.140 302.9);
  --color-50: #F7F4FB;
  --color-100: #EAE2F4;
  --color-200: #D5C5E7;
  --color-300: #B69CD3;
  --color-400: #9776BC;
  --color-500: #78559F;
  --color-600: #5F477B;
  --color-700: #463658;
  --color-800: #30263B;
  --color-900: #1E1924;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  rebecca-purple: {
    50: '#F7F4FB',
    100: '#EAE2F4',
    200: '#D5C5E7',
    300: '#B69CD3',
    400: '#9776BC',
    500: '#78559F',
    600: '#5F477B',
    700: '#463658',
    800: '#30263B',
    900: '#1E1924',
  },
}

$base: #643B92;
$base-ink: #FFFFFF;
$base-50: #F7F4FB;
$base-100: #EAE2F4;
$base-200: #D5C5E7;
$base-300: #B69CD3;
$base-400: #9776BC;
$base-500: #78559F;
$base-600: #5F477B;
$base-700: #463658;
$base-800: #30263B;
$base-900: #1E1924;
$base-hover: #4F2F74;
$base-subtle: #D0C2E0;

{
    "color": {
        "base": {
            "value": "#643B92",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F7F4FB",
                "type": "color"
            },
            "100": {
                "value": "#EAE2F4",
                "type": "color"
            },
            "200": {
                "value": "#D5C5E7",
                "type": "color"
            },
            "300": {
                "value": "#B69CD3",
                "type": "color"
            },
            "400": {
                "value": "#9776BC",
                "type": "color"
            },
            "500": {
                "value": "#78559F",
                "type": "color"
            },
            "600": {
                "value": "#5F477B",
                "type": "color"
            },
            "700": {
                "value": "#463658",
                "type": "color"
            },
            "800": {
                "value": "#30263B",
                "type": "color"
            },
            "900": {
                "value": "#1E1924",
                "type": "color"
            }
        }
    }
}