What color is #511E66?

#511E66 is a dark purple. In RGB it is rgb(81, 30, 102), and in HSL hsl(283, 55%, 26%).

Is #511E66 accessible as text?

On white, #511E66 has a contrast ratio of 12.16:1 (passes WCAG AA for body text); on black it is 1.73:1 (fails). For text placed on #511E66, use white for the best readability.

What is the closest Tailwind color to #511E66?

The nearest Tailwind CSS token is fuchsia-950 (#4B004F).

What colors go well with #511E66?

#511E66 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #32671E. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #511E66 below.

Is #511E66 good for buttons?

#511E66 works well for buttons and highlights, but use white text on #511E66 — black text only reaches 1.73:1, below the 4.5:1 needed for normal-size labels.

Is #511E66 the same as CSS indigo?

No — #511E66 is not the CSS named color indigo, but indigo (#4B0082) is the closest CSS named color.

#511E66 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #511E66

Not just a swatch — here's how #511E66 works with other colors. Named schemes with #511E66 in its natural role, and a note on why the supporting colors balance it.

Luxury Packaging Feature · 5 colors

Feature #511E66 Anchor #141210 Accent #D89954 Secondary #2D2630 Surface #F3EDE3

Indigo carries the depth in this luxury scheme, offset by a brass accent and near-black and held together by a deep neutral and an off-white surface.

Moody Editorial Color · 5 colors

Color #511E66 Anchor #2A2A2E Secondary #6E6E74 Surface #EEE5DA Accent #32062E

Indigo adds the colour to this moody editorial scheme — charcoal and a mid-grey around it, a bone highlight, and a muted jewel accent drawn from Indigo.

Berry & Cream Lead · 5 colors

Lead #511E66 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.

Vintage Leather Lead · 5 colors

Lead #511E66 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.

Minimal Editorial Surface · 5 colors

Surface #F8F4EF Accent #511E66 Secondary #695871 Support #9C9087 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 #511E66 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 46/100

Neutral

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

Softness 29/100

Low

Firm and assertive — carries weight and contrast.

Depth 66/100

High

Deep and grounding — anchors a layout, strong dark-mode base.

Naturalness 1/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 43/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 70/100

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 56/100

Moderate

Workable accent with care around contrast.

Surface fit 24/100

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 #511E66

For UI

For branding

For interior

For fashion

People also use #511E66 with

Indigo Byzantium Dark 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 12.2:1. Use

Subtle surface Use #E0CAE8 for cards and hover fills. Tint 80

Avoid beside #671E63 — 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 #511E66 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: #511E66;
  --color-base-rgb: 81 30 102;
  --color-base-oklch: oklch(34.7% 0.126 314.4);
  --color-50: #F9F3FC;
  --color-100: #F0DFF6;
  --color-200: #E0C0ED;
  --color-300: #C794DB;
  --color-400: #AD6BC7;
  --color-500: #8F4AAB;
  --color-600: #703F83;
  --color-700: #51315E;
  --color-800: #36233E;
  --color-900: #221726;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  indigo: {
    50: '#F9F3FC',
    100: '#F0DFF6',
    200: '#E0C0ED',
    300: '#C794DB',
    400: '#AD6BC7',
    500: '#8F4AAB',
    600: '#703F83',
    700: '#51315E',
    800: '#36233E',
    900: '#221726',
  },
}

$base: #511E66;
$base-ink: #FFFFFF;
$base-50: #F9F3FC;
$base-100: #F0DFF6;
$base-200: #E0C0ED;
$base-300: #C794DB;
$base-400: #AD6BC7;
$base-500: #8F4AAB;
$base-600: #703F83;
$base-700: #51315E;
$base-800: #36233E;
$base-900: #221726;
$base-hover: #421852;
$base-subtle: #D1AFDE;

{
    "color": {
        "base": {
            "value": "#511E66",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F9F3FC",
                "type": "color"
            },
            "100": {
                "value": "#F0DFF6",
                "type": "color"
            },
            "200": {
                "value": "#E0C0ED",
                "type": "color"
            },
            "300": {
                "value": "#C794DB",
                "type": "color"
            },
            "400": {
                "value": "#AD6BC7",
                "type": "color"
            },
            "500": {
                "value": "#8F4AAB",
                "type": "color"
            },
            "600": {
                "value": "#703F83",
                "type": "color"
            },
            "700": {
                "value": "#51315E",
                "type": "color"
            },
            "800": {
                "value": "#36233E",
                "type": "color"
            },
            "900": {
                "value": "#221726",
                "type": "color"
            }
        }
    }
}

Palettes built on #511E66

Color Lab

Pairs with #511E66

UI roles & guardrails

In real applications

Scales

Every model

Export