What color is #511B6D?

#511B6D is a dark purple. In RGB it is rgb(81, 27, 109), and in HSL hsl(280, 60%, 27%).

Is #511B6D accessible as text?

On white, #511B6D 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 #511B6D, use white for the best readability.

What is the closest Tailwind color to #511B6D?

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

What colors go well with #511B6D?

#511B6D pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #376E1C. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #511B6D below.

Is #511B6D good for buttons?

#511B6D works well for buttons and highlights, but use white text on #511B6D — black text only reaches 1.73:1, below the 4.5:1 needed for normal-size labels.

Is #511B6D the same as CSS indigo?

No — #511B6D is not the CSS named color indigo, but indigo (#4B0082) is the closest CSS named color.

#511B6D Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #511B6D

Not just a swatch — here's how #511B6D works with other colors. Named schemes with #511B6D in its natural role, and a note on why the supporting colors balance it.

Luxury Packaging Feature · 5 colors

Feature #511B6D Anchor #141210 Accent #D99954 Secondary #2C2630 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 #511B6D Anchor #2A2A2E Secondary #6E6E74 Surface #EEE5DA Accent #330332

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.

Coastal Morning Lead · 5 colors

Lead #511B6D 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.

Berry & Cream Lead · 5 colors

Lead #511B6D Surface #F5E6D7 Anchor #5C213F Accent #E5C2C7 Secondary #332B2F

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

Minimal Editorial Surface · 5 colors

Surface #F8F4EF Accent #511B6D Secondary #695874 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.

Build a working theme in the generator →

Color Lab

How #511B6D 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 28/100

Low

Firm and assertive — carries weight and contrast.

Depth 67/100

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 39/100

Low

A faint retro warmth without tipping into sepia.

Luxury 69/100

High

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

Brand distinctiveness 53/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 57/100

Moderate

Workable accent with care around contrast.

Surface fit 20/100

Low

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

Print safety 84/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #511B6D

For UI

For branding

For interior

For fashion

People also use #511B6D with

Egyptian Blue Byzantium Dark Olive 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 #DFCAEA for cards and hover fills. Tint 80

Avoid beside #6E1C6E — 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 #511B6D 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: #511B6D;
  --color-base-rgb: 81 27 109;
  --color-base-oklch: oklch(34.9% 0.138 311.4);
  --color-50: #F9F2FC;
  --color-100: #EFDEF8;
  --color-200: #DEBEEF;
  --color-300: #C591DE;
  --color-400: #AA67CB;
  --color-500: #8C46AF;
  --color-600: #6D3C86;
  --color-700: #4F2F60;
  --color-800: #35223F;
  --color-900: #211627;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  indigo: {
    50: '#F9F2FC',
    100: '#EFDEF8',
    200: '#DEBEEF',
    300: '#C591DE',
    400: '#AA67CB',
    500: '#8C46AF',
    600: '#6D3C86',
    700: '#4F2F60',
    800: '#35223F',
    900: '#211627',
  },
}

$base: #511B6D;
$base-ink: #FFFFFF;
$base-50: #F9F2FC;
$base-100: #EFDEF8;
$base-200: #DEBEEF;
$base-300: #C591DE;
$base-400: #AA67CB;
$base-500: #8C46AF;
$base-600: #6D3C86;
$base-700: #4F2F60;
$base-800: #35223F;
$base-900: #211627;
$base-hover: #421658;
$base-subtle: #D0AEE1;

{
    "color": {
        "base": {
            "value": "#511B6D",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F9F2FC",
                "type": "color"
            },
            "100": {
                "value": "#EFDEF8",
                "type": "color"
            },
            "200": {
                "value": "#DEBEEF",
                "type": "color"
            },
            "300": {
                "value": "#C591DE",
                "type": "color"
            },
            "400": {
                "value": "#AA67CB",
                "type": "color"
            },
            "500": {
                "value": "#8C46AF",
                "type": "color"
            },
            "600": {
                "value": "#6D3C86",
                "type": "color"
            },
            "700": {
                "value": "#4F2F60",
                "type": "color"
            },
            "800": {
                "value": "#35223F",
                "type": "color"
            },
            "900": {
                "value": "#211627",
                "type": "color"
            }
        }
    }
}