What color is #511BB5?

#511BB5 is a medium, vivid violet. In RGB it is rgb(81, 27, 181), and in HSL hsl(261, 74%, 41%).

Is #511BB5 accessible as text?

On white, #511BB5 has a contrast ratio of 9.66:1 (passes WCAG AA for body text); on black it is 2.17:1 (fails). For text placed on #511BB5, use white for the best readability.

What is the closest Tailwind color to #511BB5?

The nearest Tailwind CSS token is violet-800 (#5D0EC0).

What colors go well with #511BB5?

#511BB5 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #80B61B. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #511BB5 below.

Is #511BB5 good for buttons?

#511BB5 works well for buttons and highlights, but use white text on #511BB5 — black text only reaches 2.17:1, below the 4.5:1 needed for normal-size labels.

Is #511BB5 the same as CSS rebeccapurple?

No — #511BB5 is not the CSS named color rebeccapurple, but rebeccapurple (#663399) is the closest CSS named color.

#511BB5 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #511BB5

Not just a swatch — here's how #511BB5 works with other colors. Named schemes with #511BB5 in its natural role, and a note on why the supporting colors balance it.

Tech Product Signal · 5 colors

Signal #511BB5 Surface #14161A Highlight #F4F6F8 Secondary #5B6672 Accent #6E50D3

Grape is the vivid signal in this product UI — on a near-black surface with cool white, a slate grey and a lighter tint of Grape.

Berry & Cream Lead · 5 colors

Lead #511BB5 Surface #F5E5D7 Anchor #5C2141 Accent #E5C2C8 Secondary #332B2F

Grape 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 #511BB5 Secondary #716C9D Support #9D9088 Ink #18140F

Grape 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 Grape carrying the quiet middle.

Coastal Morning Lead · 5 colors

Lead #511BB5 Accent #A5C4C3 Surface #E9D6BF Secondary #9AA0A1 Anchor #22334A

Grape opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.

Sunset Warmth Glow · 5 colors

Glow #511BB5 Secondary #E86A6E Accent #F5934B Anchor #583B57 Surface #F7E7D7

Grape glows at the center of this sunset palette, joined by coral and gold, deepened by a plum anchor and cooled with cream.

Build a working theme in the generator →

Color Lab

How #511BB5 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 24/100

Cool

Reads cool and recessive — calming, technical, good for trust-led UI.

Softness 26/100

Low

Firm and assertive — carries weight and contrast.

Depth 63/100

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 18/100

Very low

Clean and current — no dusty, aged cast.

Luxury 57/100

Moderate

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

Brand distinctiveness 83/100

Very high

Bold and ownable — memorable as a primary brand color.

UI accent fit 64/100

High

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

Surface fit 13/100

Very low

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

Print safety 71/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #511BB5

For UI

For branding

For interior

For fashion

People also use #511BB5 with

Cerulean Dark Orchid Apple Green Gainsboro Russian Violet

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 9.7:1. Use

Subtle surface Use #DCD1F1 for cards and hover fills. Tint 80

Avoid beside #851BB6 — 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 #511BB5 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: #511BB5;
  --color-base-rgb: 81 27 181;
  --color-base-oklch: oklch(41.5% 0.214 289.0);
  --color-50: #F5F1FE;
  --color-100: #E6DBFB;
  --color-200: #CDB8F4;
  --color-300: #A988E7;
  --color-400: #875CD6;
  --color-500: #6739BC;
  --color-600: #53338F;
  --color-700: #3E2A65;
  --color-800: #2B1F42;
  --color-900: #1C1529;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  grape: {
    50: '#F5F1FE',
    100: '#E6DBFB',
    200: '#CDB8F4',
    300: '#A988E7',
    400: '#875CD6',
    500: '#6739BC',
    600: '#53338F',
    700: '#3E2A65',
    800: '#2B1F42',
    900: '#1C1529',
  },
}

$base: #511BB5;
$base-ink: #FFFFFF;
$base-50: #F5F1FE;
$base-100: #E6DBFB;
$base-200: #CDB8F4;
$base-300: #A988E7;
$base-400: #875CD6;
$base-500: #6739BC;
$base-600: #53338F;
$base-700: #3E2A65;
$base-800: #2B1F42;
$base-900: #1C1529;
$base-hover: #411692;
$base-subtle: #CAB8EB;

{
    "color": {
        "base": {
            "value": "#511BB5",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F5F1FE",
                "type": "color"
            },
            "100": {
                "value": "#E6DBFB",
                "type": "color"
            },
            "200": {
                "value": "#CDB8F4",
                "type": "color"
            },
            "300": {
                "value": "#A988E7",
                "type": "color"
            },
            "400": {
                "value": "#875CD6",
                "type": "color"
            },
            "500": {
                "value": "#6739BC",
                "type": "color"
            },
            "600": {
                "value": "#53338F",
                "type": "color"
            },
            "700": {
                "value": "#3E2A65",
                "type": "color"
            },
            "800": {
                "value": "#2B1F42",
                "type": "color"
            },
            "900": {
                "value": "#1C1529",
                "type": "color"
            }
        }
    }
}

Palettes built on #511BB5

Color Lab

Pairs with #511BB5

UI roles & guardrails

In real applications

Scales

Every model

Export