What color is #511B70?

#511B70 is a dark violet. In RGB it is rgb(81, 27, 112), and in HSL hsl(278, 61%, 27%).

Is #511B70 accessible as text?

On white, #511B70 has a contrast ratio of 12.06:1 (passes WCAG AA for body text); on black it is 1.74:1 (fails). For text placed on #511B70, use white for the best readability.

What is the closest Tailwind color to #511B70?

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

What colors go well with #511B70?

#511B70 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #3A6F1B. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #511B70 below.

Is #511B70 good for buttons?

#511B70 works well for buttons and highlights, but use white text on #511B70 — black text only reaches 1.74:1, below the 4.5:1 needed for normal-size labels.

Is #511B70 the same as CSS indigo?

No — #511B70 is not the CSS named color indigo, but indigo (#4B0082) is the closest CSS named color.

#511B70 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #511B70

Not just a swatch — here's how #511B70 works with other colors. Named schemes with #511B70 in its natural role, and a note on why the supporting colors balance it.

Luxury Packaging Feature · 5 colors

Feature #511B70 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 #511B70 Anchor #2A2A2E Secondary #6E6E74 Surface #EEE5DA Accent #340334

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 #511B70 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 #511B70 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 #511B70 Secondary #695976 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 #511B70 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 43/100

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 38/100

Low

A faint retro warmth without tipping into sepia.

Luxury 68/100

High

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

Brand distinctiveness 55/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 57/100

Moderate

Workable accent with care around contrast.

Surface fit 19/100

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 #511B70

For UI

For branding

For interior

For fashion

People also use #511B70 with

Egyptian Blue Byzantium Dark 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 12.1:1. Use

Subtle surface Use #DEC9EA for cards and hover fills. Tint 80

Avoid beside #6C1B6F — 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 #511B70 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: #511B70;
  --color-base-rgb: 81 27 112;
  --color-base-oklch: oklch(35.1% 0.141 310.0);
  --color-50: #F9F2FC;
  --color-100: #EEDDF8;
  --color-200: #DDBDEF;
  --color-300: #C290DF;
  --color-400: #A667CB;
  --color-500: #8945B0;
  --color-600: #6B3B87;
  --color-700: #4E2F60;
  --color-800: #34223F;
  --color-900: #211627;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  indigo: {
    50: '#F9F2FC',
    100: '#EEDDF8',
    200: '#DDBDEF',
    300: '#C290DF',
    400: '#A667CB',
    500: '#8945B0',
    600: '#6B3B87',
    700: '#4E2F60',
    800: '#34223F',
    900: '#211627',
  },
}

$base: #511B70;
$base-ink: #FFFFFF;
$base-50: #F9F2FC;
$base-100: #EEDDF8;
$base-200: #DDBDEF;
$base-300: #C290DF;
$base-400: #A667CB;
$base-500: #8945B0;
$base-600: #6B3B87;
$base-700: #4E2F60;
$base-800: #34223F;
$base-900: #211627;
$base-hover: #401559;
$base-subtle: #CEADE1;

{
    "color": {
        "base": {
            "value": "#511B70",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F9F2FC",
                "type": "color"
            },
            "100": {
                "value": "#EEDDF8",
                "type": "color"
            },
            "200": {
                "value": "#DDBDEF",
                "type": "color"
            },
            "300": {
                "value": "#C290DF",
                "type": "color"
            },
            "400": {
                "value": "#A667CB",
                "type": "color"
            },
            "500": {
                "value": "#8945B0",
                "type": "color"
            },
            "600": {
                "value": "#6B3B87",
                "type": "color"
            },
            "700": {
                "value": "#4E2F60",
                "type": "color"
            },
            "800": {
                "value": "#34223F",
                "type": "color"
            },
            "900": {
                "value": "#211627",
                "type": "color"
            }
        }
    }
}