What color is #543C86?

#543C86 is a dark indigo. In RGB it is rgb(84, 60, 134), and in HSL hsl(259, 38%, 38%).

Is #543C86 accessible as text?

On white, #543C86 has a contrast ratio of 8.87:1 (passes WCAG AA for body text); on black it is 2.37:1 (fails). For text placed on #543C86, use white for the best readability.

What is the closest Tailwind color to #543C86?

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

What colors go well with #543C86?

#543C86 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #6E863C. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #543C86 below.

Is #543C86 good for buttons?

#543C86 works well for buttons and highlights, but use white text on #543C86 — black text only reaches 2.37:1, below the 4.5:1 needed for normal-size labels.

Is #543C86 the same as CSS darkslateblue?

No — #543C86 is not the CSS named color darkslateblue, but darkslateblue (#483D8B) is the closest CSS named color by perceptual color distance — it sits in a different color family, so treat it as a rough reference, not a match.

#543C86 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #543C86

Not just a swatch — here's how #543C86 works with other colors. Named schemes with #543C86 in its natural role, and a note on why the supporting colors balance it.

Berry & Cream Lead · 5 colors

Lead #543C86 Surface #F5E5D7 Anchor #5C2141 Accent #E5C2C8 Secondary #332B2F

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

Coastal Morning Lead · 5 colors

Lead #543C86 Accent #A5C4C3 Surface #E9D6BF Secondary #9AA0A1 Anchor #23334A

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

Vintage Leather Lead · 5 colors

Lead #543C86 Secondary #7E4632 Surface #EDD8C2 Accent #355248 Anchor #582237

Dark Slate Blue plays the worn-leather lead, deepened by saddle brown and an oxblood anchor, softened by aged cream and cooled by a muted forest green.

Modern Café Dominant · 5 colors

Dominant #543C86 Anchor #3B2923 Surface #F3E1D1 Accent #739F7D Secondary #3C3734

Dark Slate Blue anchors this café scheme as the warm mid-tone, lifted by latte cream and a muted sage accent and grounded by espresso brown and a warm charcoal.

Minimal Editorial Surface · 5 colors

Surface #F8F4EF Accent #543C86 Secondary #76708B Support #9D9088 Ink #18140F

Dark Slate Blue 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 Dark Slate Blue carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #543C86 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 35/100

Cool

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

Softness 35/100

Low

Middle-weight — neither delicate nor heavy.

Depth 59/100

Moderate

Mid depth — usable as an accent or a muted ground.

Naturalness 0/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 48/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 64/100

High

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

Brand distinctiveness 32/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 80/100

High

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

Surface fit 21/100

Low

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

Print safety 85/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #543C86

For UI

For branding

For interior

For fashion

People also use #543C86 with

Lapis Lazuli Plum Olive 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 8.9:1. Use

Subtle surface Use #DCD7E8 for cards and hover fills. Tint 80

Avoid beside #6C3C86 — 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 #543C86 at work across the surfaces designers actually ship.

Website / UI

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Build faster.

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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: #543C86;
  --color-base-rgb: 84 60 134;
  --color-base-oklch: oklch(42.1% 0.119 295.8);
  --color-50: #F6F4FB;
  --color-100: #E8E2F3;
  --color-200: #D1C7E6;
  --color-300: #AF9FD0;
  --color-400: #8D7AB8;
  --color-500: #6E599C;
  --color-600: #584979;
  --color-700: #423857;
  --color-800: #2D273A;
  --color-900: #1D1924;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  dark-slate-blue: {
    50: '#F6F4FB',
    100: '#E8E2F3',
    200: '#D1C7E6',
    300: '#AF9FD0',
    400: '#8D7AB8',
    500: '#6E599C',
    600: '#584979',
    700: '#423857',
    800: '#2D273A',
    900: '#1D1924',
  },
}

$base: #543C86;
$base-ink: #FFFFFF;
$base-50: #F6F4FB;
$base-100: #E8E2F3;
$base-200: #D1C7E6;
$base-300: #AF9FD0;
$base-400: #8D7AB8;
$base-500: #6E599C;
$base-600: #584979;
$base-700: #423857;
$base-800: #2D273A;
$base-900: #1D1924;
$base-hover: #43306B;
$base-subtle: #CBC2DD;

{
    "color": {
        "base": {
            "value": "#543C86",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F6F4FB",
                "type": "color"
            },
            "100": {
                "value": "#E8E2F3",
                "type": "color"
            },
            "200": {
                "value": "#D1C7E6",
                "type": "color"
            },
            "300": {
                "value": "#AF9FD0",
                "type": "color"
            },
            "400": {
                "value": "#8D7AB8",
                "type": "color"
            },
            "500": {
                "value": "#6E599C",
                "type": "color"
            },
            "600": {
                "value": "#584979",
                "type": "color"
            },
            "700": {
                "value": "#423857",
                "type": "color"
            },
            "800": {
                "value": "#2D273A",
                "type": "color"
            },
            "900": {
                "value": "#1D1924",
                "type": "color"
            }
        }
    }
}