What color is #640B85?

#640B85 is a dark, vivid purple. In RGB it is rgb(100, 11, 133), and in HSL hsl(284, 85%, 28%).

Is #640B85 accessible as text?

On white, #640B85 has a contrast ratio of 10.89:1 (passes WCAG AA for body text); on black it is 1.93:1 (fails). For text placed on #640B85, use white for the best readability.

What is the closest Tailwind color to #640B85?

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

What colors go well with #640B85?

#640B85 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #2B840B. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #640B85 below.

Is #640B85 good for buttons?

#640B85 works well for buttons and highlights, but use white text on #640B85 — black text only reaches 1.93:1, below the 4.5:1 needed for normal-size labels.

Is #640B85 the same as CSS indigo?

No — #640B85 is not the CSS named color indigo, but indigo (#4B0082) is the closest CSS named color.

#640B85 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #640B85

Not just a swatch — here's how #640B85 works with other colors. Named schemes with #640B85 in its natural role, and a note on why the supporting colors balance it.

Berry & Cream Lead · 5 colors

Lead #640B85 Surface #F5E6D7 Anchor #5D203F Accent #E5C2C6 Secondary #332B2F

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

Coastal Morning Lead · 5 colors

Lead #640B85 Accent #A5C4C4 Surface #E9D6BF Secondary #9AA0A1 Anchor #24334B

Indigo 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 #640B85 Secondary #7E4630 Surface #ECD8C1 Accent #355249 Anchor #592235

Indigo 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 #640B85 Anchor #3B2922 Surface #F2E2D1 Accent #9F9362 Secondary #3C3733

Indigo 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 #640B85 Secondary #775F84 Support #9C9088 Ink #18140F

Indigo 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 Indigo carrying the quiet middle.

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Color Lab

How #640B85 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 44/100

Neutral

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

Softness 27/100

Low

Firm and assertive — carries weight and contrast.

Depth 65/100

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 29/100

Low

A faint retro warmth without tipping into sepia.

Luxury 62/100

High

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

Brand distinctiveness 49/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 65/100

High

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

Surface fit 15/100

Very low

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

Print safety 79/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #640B85

For UI

For branding

For interior

For fashion

People also use #640B85 with

Zaffre Byzantium Green Gainsboro Eggplant

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 10.9:1. Use

Subtle surface Use #E5C4F1 for cards and hover fills. Tint 80

Avoid beside #840B7C — 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 #640B85 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: #640B85;
  --color-base-rgb: 100 11 133;
  --color-base-oklch: oklch(38.4% 0.182 313.5);
  --color-50: #FBF0FE;
  --color-100: #F3D8FD;
  --color-200: #E6B4F9;
  --color-300: #D181EE;
  --color-400: #BA53DF;
  --color-500: #9D30C5;
  --color-600: #7A2C96;
  --color-700: #57256A;
  --color-800: #3A1C45;
  --color-900: #24132A;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  indigo: {
    50: '#FBF0FE',
    100: '#F3D8FD',
    200: '#E6B4F9',
    300: '#D181EE',
    400: '#BA53DF',
    500: '#9D30C5',
    600: '#7A2C96',
    700: '#57256A',
    800: '#3A1C45',
    900: '#24132A',
  },
}

$base: #640B85;
$base-ink: #FFFFFF;
$base-50: #FBF0FE;
$base-100: #F3D8FD;
$base-200: #E6B4F9;
$base-300: #D181EE;
$base-400: #BA53DF;
$base-500: #9D30C5;
$base-600: #7A2C96;
$base-700: #57256A;
$base-800: #3A1C45;
$base-900: #24132A;
$base-hover: #50096A;
$base-subtle: #D9A4EC;

{
    "color": {
        "base": {
            "value": "#640B85",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#FBF0FE",
                "type": "color"
            },
            "100": {
                "value": "#F3D8FD",
                "type": "color"
            },
            "200": {
                "value": "#E6B4F9",
                "type": "color"
            },
            "300": {
                "value": "#D181EE",
                "type": "color"
            },
            "400": {
                "value": "#BA53DF",
                "type": "color"
            },
            "500": {
                "value": "#9D30C5",
                "type": "color"
            },
            "600": {
                "value": "#7A2C96",
                "type": "color"
            },
            "700": {
                "value": "#57256A",
                "type": "color"
            },
            "800": {
                "value": "#3A1C45",
                "type": "color"
            },
            "900": {
                "value": "#24132A",
                "type": "color"
            }
        }
    }
}

Palettes built on #640B85

Color Lab

Pairs with #640B85

UI roles & guardrails

In real applications

Scales

Every model

Export