What color is #511EA3?

#511EA3 is a dark violet. In RGB it is rgb(81, 30, 163), and in HSL hsl(263, 69%, 38%).

Is #511EA3 accessible as text?

On white, #511EA3 has a contrast ratio of 10.17:1 (passes WCAG AA for body text); on black it is 2.06:1 (fails). For text placed on #511EA3, use white for the best readability.

What is the closest Tailwind color to #511EA3?

The nearest Tailwind CSS token is violet-900 (#4D179A).

What colors go well with #511EA3?

#511EA3 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #71A41E. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #511EA3 below.

Is #511EA3 good for buttons?

#511EA3 works well for buttons and highlights, but use white text on #511EA3 — black text only reaches 2.06:1, below the 4.5:1 needed for normal-size labels.

Is #511EA3 the same as CSS rebeccapurple?

No — #511EA3 is not the CSS named color rebeccapurple, but rebeccapurple (#663399) is the closest CSS named color.

#511EA3 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #511EA3

Not just a swatch — here's how #511EA3 works with other colors. Named schemes with #511EA3 in its natural role, and a note on why the supporting colors balance it.

Berry & Cream Lead · 5 colors

Lead #511EA3 Surface #F5E5D7 Anchor #5C2141 Accent #E5C2C8 Secondary #332B2F

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

Tech Product Signal · 5 colors

Signal #511EA3 Surface #14161A Highlight #F4F6F8 Secondary #5B6572 Accent #6F4EC2

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

Minimal Editorial Surface · 5 colors

Surface #F8F4EF Accent #511EA3 Secondary #706793 Support #9D9088 Ink #18140F

Rebecca Purple 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 Rebecca Purple carrying the quiet middle.

Coastal Morning Lead · 5 colors

Lead #511EA3 Accent #A5C4C3 Surface #E9D6BF Secondary #9AA0A1 Anchor #22334A

Rebecca Purple 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 #511EA3 Secondary #E86B6D Accent #F4944A Anchor #583B56 Surface #F7E7D7

Rebecca Purple 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 #511EA3 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 27/100

Cool

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

Softness 27/100

Low

Firm and assertive — carries weight and contrast.

Depth 64/100

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 24/100

Low

Clean and current — no dusty, aged cast.

Luxury 60/100

Moderate

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

Brand distinctiveness 74/100

High

Bold and ownable — memorable as a primary brand color.

UI accent fit 67/100

High

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

Surface fit 14/100

Very low

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

Print safety 74/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #511EA3

For UI

For branding

For interior

For fashion

People also use #511EA3 with

Cerulean Mauveine Greenery 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 10.2:1. Use

Subtle surface Use #DCD0EF for cards and hover fills. Tint 80

Avoid beside #7E1EA4 — 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 #511EA3 at work across the surfaces designers actually ship.

Website / UI

Northwind Sign up

Build faster.

A working theme, generated in seconds.

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: #511EA3;
  --color-base-rgb: 81 30 163;
  --color-base-oklch: oklch(40.0% 0.193 292.7);
  --color-50: #F6F2FD;
  --color-100: #E7DCF9;
  --color-200: #D0BAF2;
  --color-300: #AD8BE4;
  --color-400: #8C60D2;
  --color-500: #6C3EB7;
  --color-600: #57368C;
  --color-700: #412C63;
  --color-800: #2D2041;
  --color-900: #1C1528;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  rebecca-purple: {
    50: '#F6F2FD',
    100: '#E7DCF9',
    200: '#D0BAF2',
    300: '#AD8BE4',
    400: '#8C60D2',
    500: '#6C3EB7',
    600: '#57368C',
    700: '#412C63',
    800: '#2D2041',
    900: '#1C1528',
  },
}

$base: #511EA3;
$base-ink: #FFFFFF;
$base-50: #F6F2FD;
$base-100: #E7DCF9;
$base-200: #D0BAF2;
$base-300: #AD8BE4;
$base-400: #8C60D2;
$base-500: #6C3EB7;
$base-600: #57368C;
$base-700: #412C63;
$base-800: #2D2041;
$base-900: #1C1528;
$base-hover: #411883;
$base-subtle: #CAB7E8;

{
    "color": {
        "base": {
            "value": "#511EA3",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F6F2FD",
                "type": "color"
            },
            "100": {
                "value": "#E7DCF9",
                "type": "color"
            },
            "200": {
                "value": "#D0BAF2",
                "type": "color"
            },
            "300": {
                "value": "#AD8BE4",
                "type": "color"
            },
            "400": {
                "value": "#8C60D2",
                "type": "color"
            },
            "500": {
                "value": "#6C3EB7",
                "type": "color"
            },
            "600": {
                "value": "#57368C",
                "type": "color"
            },
            "700": {
                "value": "#412C63",
                "type": "color"
            },
            "800": {
                "value": "#2D2041",
                "type": "color"
            },
            "900": {
                "value": "#1C1528",
                "type": "color"
            }
        }
    }
}

Palettes built on #511EA3

Color Lab

Pairs with #511EA3

UI roles & guardrails

In real applications

Scales

Every model

Export