What color is #5B366D?

#5B366D is a dark, muted purple. In RGB it is rgb(91, 54, 109), and in HSL hsl(280, 34%, 32%).

Is #5B366D accessible as text?

On white, #5B366D has a contrast ratio of 9.57:1 (passes WCAG AA for body text); on black it is 2.19:1 (fails). For text placed on #5B366D, use white for the best readability.

What is the closest Tailwind color to #5B366D?

The nearest Tailwind CSS token is fuchsia-900 (#721378).

What colors go well with #5B366D?

#5B366D pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #486D36. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #5B366D below.

Is #5B366D good for buttons?

#5B366D works well for buttons and highlights, but use white text on #5B366D — black text only reaches 2.19:1, below the 4.5:1 needed for normal-size labels.

Is #5B366D the same as CSS darkslateblue?

No — #5B366D 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.

#5B366D Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #5B366D

Not just a swatch — here's how #5B366D works with other colors. Named schemes with #5B366D in its natural role, and a note on why the supporting colors balance it.

Berry & Cream Lead · 5 colors

Lead #5B366D Surface #F5E6D7 Anchor #5D203F Accent #E5C2C6 Secondary #332B2F

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

Vintage Leather Lead · 5 colors

Lead #5B366D Secondary #7E4630 Surface #ECD8C1 Accent #355249 Anchor #592235

Byzantium 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 #5B366D Anchor #3B2922 Surface #F2E2D1 Accent #9F9362 Secondary #3C3733

Byzantium 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 #5B366D Secondary #776A7E Support #9C9088 Ink #18140F

Byzantium 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 Byzantium carrying the quiet middle.

Tech Product Signal · 5 colors

Signal #5B366D Surface #14161A Highlight #F4F6F8 Secondary #5C6573 Accent #7C5A8D

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

Build a working theme in the generator →

Color Lab

How #5B366D 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 47/100

Neutral

Balanced temperature — flexible, sits between warm and cool schemes.

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 1/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 57/100

Moderate

Faded, nostalgic quality — editorial, heritage and retro work.

Luxury 65/100

High

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

Brand distinctiveness 27/100

Low

Quiet and neutral — a supporting tone, not a signature.

UI accent fit 70/100

High

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

Surface fit 29/100

Low

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

Print safety 89/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #5B366D

For UI

For branding

For interior

For fashion

People also use #5B366D with

Dark Slate Blue Byzantium Dark Olive Green Gainsboro Eggplant

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 9.6:1. Use

Subtle surface Use #DFD4E5 for cards and hover fills. Tint 80

Avoid beside #6D366D — 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 #5B366D 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: #5B366D;
  --color-base-rgb: 91 54 109;
  --color-base-oklch: oklch(40.2% 0.098 313.8);
  --color-50: #F8F4FA;
  --color-100: #EDE3F2;
  --color-200: #DBC8E4;
  --color-300: #BFA2CE;
  --color-400: #A27DB5;
  --color-500: #845C98;
  --color-600: #684C76;
  --color-700: #4C3A55;
  --color-800: #332839;
  --color-900: #201A23;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  byzantium: {
    50: '#F8F4FA',
    100: '#EDE3F2',
    200: '#DBC8E4',
    300: '#BFA2CE',
    400: '#A27DB5',
    500: '#845C98',
    600: '#684C76',
    700: '#4C3A55',
    800: '#332839',
    900: '#201A23',
  },
}

$base: #5B366D;
$base-ink: #FFFFFF;
$base-50: #F8F4FA;
$base-100: #EDE3F2;
$base-200: #DBC8E4;
$base-300: #BFA2CE;
$base-400: #A27DB5;
$base-500: #845C98;
$base-600: #684C76;
$base-700: #4C3A55;
$base-800: #332839;
$base-900: #201A23;
$base-hover: #492B57;
$base-subtle: #CFBED8;

{
    "color": {
        "base": {
            "value": "#5B366D",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F8F4FA",
                "type": "color"
            },
            "100": {
                "value": "#EDE3F2",
                "type": "color"
            },
            "200": {
                "value": "#DBC8E4",
                "type": "color"
            },
            "300": {
                "value": "#BFA2CE",
                "type": "color"
            },
            "400": {
                "value": "#A27DB5",
                "type": "color"
            },
            "500": {
                "value": "#845C98",
                "type": "color"
            },
            "600": {
                "value": "#684C76",
                "type": "color"
            },
            "700": {
                "value": "#4C3A55",
                "type": "color"
            },
            "800": {
                "value": "#332839",
                "type": "color"
            },
            "900": {
                "value": "#201A23",
                "type": "color"
            }
        }
    }
}