What color is #663E89?

#663E89 is a dark violet. In RGB it is rgb(102, 62, 137), and in HSL hsl(272, 38%, 39%).

Is #663E89 accessible as text?

On white, #663E89 has a contrast ratio of 8.03:1 (passes WCAG AA for body text); on black it is 2.62:1 (fails). For text placed on #663E89, use white for the best readability.

What is the closest Tailwind color to #663E89?

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

What colors go well with #663E89?

#663E89 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #61893E. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #663E89 below.

Is #663E89 good for buttons?

#663E89 works well for buttons and highlights, but use white text on #663E89 — black text only reaches 2.62:1, below the 4.5:1 needed for normal-size labels.

Is #663E89 the same as CSS rebeccapurple?

No — #663E89 is not the CSS named color rebeccapurple, but rebeccapurple (#663399) is the closest CSS named color.

#663E89 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #663E89

Not just a swatch — here's how #663E89 works with other colors. Named schemes with #663E89 in its natural role, and a note on why the supporting colors balance it.

Berry & Cream Lead · 5 colors

Lead #663E89 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.

Coastal Morning Lead · 5 colors

Lead #663E89 Accent #A5C4C4 Surface #E9D6BF Secondary #9AA0A1 Anchor #23334B

Eminence 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 #663E89 Secondary #7E4631 Surface #EDD8C1 Accent #355248 Anchor #592236

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 #663E89 Anchor #3B2923 Surface #F2E1D1 Accent #9F9361 Secondary #3C3734

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 #663E89 Secondary #837691 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.

Build a working theme in the generator →

Color Lab

How #663E89 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 42/100

Neutral

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

Softness 36/100

Low

Middle-weight — neither delicate nor heavy.

Depth 56/100

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 52/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 61/100

High

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

Brand distinctiveness 33/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 87/100

Very high

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

Surface fit 18/100

Very low

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

Print safety 85/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #663E89

For UI

For branding

For interior

For fashion

People also use #663E89 with

Cerulean Plum Olive 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 8.0:1. Use

Subtle surface Use #E0D7E8 for cards and hover fills. Tint 80

Avoid beside #7F3E89 — 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 #663E89 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: #663E89;
  --color-base-rgb: 102 62 137;
  --color-base-oklch: oklch(44.6% 0.124 306.7);
  --color-50: #F8F4FB;
  --color-100: #EBE2F3;
  --color-200: #D7C7E6;
  --color-300: #B99FD0;
  --color-400: #9B7AB8;
  --color-500: #7D599C;
  --color-600: #624979;
  --color-700: #483857;
  --color-800: #31273A;
  --color-900: #1F1924;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  eminence: {
    50: '#F8F4FB',
    100: '#EBE2F3',
    200: '#D7C7E6',
    300: '#B99FD0',
    400: '#9B7AB8',
    500: '#7D599C',
    600: '#624979',
    700: '#483857',
    800: '#31273A',
    900: '#1F1924',
  },
}

$base: #663E89;
$base-ink: #FFFFFF;
$base-50: #F8F4FB;
$base-100: #EBE2F3;
$base-200: #D7C7E6;
$base-300: #B99FD0;
$base-400: #9B7AB8;
$base-500: #7D599C;
$base-600: #624979;
$base-700: #483857;
$base-800: #31273A;
$base-900: #1F1924;
$base-hover: #52316E;
$base-subtle: #D1C3DE;

{
    "color": {
        "base": {
            "value": "#663E89",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F8F4FB",
                "type": "color"
            },
            "100": {
                "value": "#EBE2F3",
                "type": "color"
            },
            "200": {
                "value": "#D7C7E6",
                "type": "color"
            },
            "300": {
                "value": "#B99FD0",
                "type": "color"
            },
            "400": {
                "value": "#9B7AB8",
                "type": "color"
            },
            "500": {
                "value": "#7D599C",
                "type": "color"
            },
            "600": {
                "value": "#624979",
                "type": "color"
            },
            "700": {
                "value": "#483857",
                "type": "color"
            },
            "800": {
                "value": "#31273A",
                "type": "color"
            },
            "900": {
                "value": "#1F1924",
                "type": "color"
            }
        }
    }
}