What color is #511AA2?

#511AA2 is a dark, vivid violet. In RGB it is rgb(81, 26, 162), and in HSL hsl(264, 72%, 37%).

Is #511AA2 accessible as text?

On white, #511AA2 has a contrast ratio of 10.40:1 (passes WCAG AA for body text); on black it is 2.02:1 (fails). For text placed on #511AA2, use white for the best readability.

What is the closest Tailwind color to #511AA2?

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

What colors go well with #511AA2?

#511AA2 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #6CA21A. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #511AA2 below.

Is #511AA2 good for buttons?

#511AA2 works well for buttons and highlights, but use white text on #511AA2 — black text only reaches 2.02:1, below the 4.5:1 needed for normal-size labels.

Is #511AA2 the same as CSS indigo?

No — #511AA2 is not the CSS named color indigo, but indigo (#4B0082) is the closest CSS named color.

#511AA2 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #511AA2

Not just a swatch — here's how #511AA2 works with other colors. Named schemes with #511AA2 in its natural role, and a note on why the supporting colors balance it.

Berry & Cream Lead · 5 colors

Lead #511AA2 Surface #F5E5D7 Anchor #5C2141 Accent #E5C2C8 Secondary #332B2F

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

Tech Product Signal · 5 colors

Signal #511AA2 Surface #14161A Highlight #F4F6F8 Secondary #5B6572 Accent #6F4BC1

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

Minimal Editorial Surface · 5 colors

Surface #F8F4EF Accent #511AA2 Secondary #6F6692 Support #9D9088 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.

Coastal Morning Lead · 5 colors

Lead #511AA2 Accent #A5C4C3 Surface #E9D6BF Secondary #9AA0A1 Anchor #23334A

Indigo 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 #511AA2 Secondary #E86B6D Accent #F4944A Anchor #583B56 Surface #F7E7D7

Indigo 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 #511AA2 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 28/100

Cool

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

Softness 26/100

Low

Firm and assertive — carries weight and contrast.

Depth 65/100

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 23/100

Low

Clean and current — no dusty, aged cast.

Luxury 60/100

Moderate

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

Brand distinctiveness 75/100

High

Bold and ownable — memorable as a primary brand color.

UI accent fit 65/100

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 #511AA2

For UI

For branding

For interior

For fashion

People also use #511AA2 with

Cobalt Blue Mauveine Olive Drab 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 10.4:1. Use

Subtle surface Use #DCCEF0 for cards and hover fills. Tint 80

Avoid beside #7E1AA2 — 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 #511AA2 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: #511AA2;
  --color-base-rgb: 81 26 162;
  --color-base-oklch: oklch(39.5% 0.195 293.3);
  --color-50: #F6F1FD;
  --color-100: #E7DBFA;
  --color-200: #D0B9F3;
  --color-300: #AE89E6;
  --color-400: #8D5DD5;
  --color-500: #6E3BBA;
  --color-600: #58348E;
  --color-700: #422A64;
  --color-800: #2D1F42;
  --color-900: #1D1528;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  indigo: {
    50: '#F6F1FD',
    100: '#E7DBFA',
    200: '#D0B9F3',
    300: '#AE89E6',
    400: '#8D5DD5',
    500: '#6E3BBA',
    600: '#58348E',
    700: '#422A64',
    800: '#2D1F42',
    900: '#1D1528',
  },
}

$base: #511AA2;
$base-ink: #FFFFFF;
$base-50: #F6F1FD;
$base-100: #E7DBFA;
$base-200: #D0B9F3;
$base-300: #AE89E6;
$base-400: #8D5DD5;
$base-500: #6E3BBA;
$base-600: #58348E;
$base-700: #422A64;
$base-800: #2D1F42;
$base-900: #1D1528;
$base-hover: #411582;
$base-subtle: #CAB4E9;

{
    "color": {
        "base": {
            "value": "#511AA2",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F6F1FD",
                "type": "color"
            },
            "100": {
                "value": "#E7DBFA",
                "type": "color"
            },
            "200": {
                "value": "#D0B9F3",
                "type": "color"
            },
            "300": {
                "value": "#AE89E6",
                "type": "color"
            },
            "400": {
                "value": "#8D5DD5",
                "type": "color"
            },
            "500": {
                "value": "#6E3BBA",
                "type": "color"
            },
            "600": {
                "value": "#58348E",
                "type": "color"
            },
            "700": {
                "value": "#422A64",
                "type": "color"
            },
            "800": {
                "value": "#2D1F42",
                "type": "color"
            },
            "900": {
                "value": "#1D1528",
                "type": "color"
            }
        }
    }
}

Palettes built on #511AA2

Color Lab

Pairs with #511AA2

UI roles & guardrails

In real applications

Scales

Every model

Export