What color is #B309BC?

#B309BC is a dark, vivid purple. In RGB it is rgb(179, 9, 188), and in HSL hsl(297, 91%, 39%).

Is #B309BC accessible as text?

On white, #B309BC has a contrast ratio of 5.70:1 (passes WCAG AA for body text); on black it is 3.68:1 (fails). For text placed on #B309BC, use white for the best readability.

What is the closest Tailwind color to #B309BC?

The nearest Tailwind CSS token is fuchsia-700 (#A800B7).

What colors go well with #B309BC?

#B309BC pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #12BE09. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #B309BC below.

Is #B309BC good for buttons?

#B309BC works well for buttons and highlights, but use white text on #B309BC — black text only reaches 3.68:1, below the 4.5:1 needed for normal-size labels.

Is #B309BC the same as CSS darkorchid?

No — #B309BC is not the CSS named color darkorchid, but darkorchid (#9932CC) is the closest CSS named color.

#B309BC Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #B309BC

Not just a swatch — here's how #B309BC works with other colors. Named schemes with #B309BC in its natural role, and a note on why the supporting colors balance it.

Berry & Cream Lead · 5 colors

Lead #B309BC Surface #F5E6D7 Anchor #5D203D Accent #E6C2C6 Secondary #332B2E

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

Tech Product Signal · 5 colors

Signal #B309BC Surface #14161A Highlight #F4F6F8 Secondary #5C6573 Accent #D654DD

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

Minimal Editorial Surface · 5 colors

Surface #F8F4EF Accent #B309BC Secondary #B687B8 Support #9C9087 Ink #18140F

Byzantine 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 Byzantine carrying the quiet middle.

Sunset Warmth Glow · 5 colors

Glow #B309BC Secondary #E86C64 Accent #F19643 Anchor #5A3A54 Surface #F6E8D7

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

Vintage Leather Lead · 5 colors

Lead #B309BC Secondary #7D472E Surface #ECD8C1 Accent #34524A Anchor #592234

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

Build a working theme in the generator →

Color Lab

How #B309BC 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 55/100

Neutral

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

Softness 29/100

Low

Firm and assertive — carries weight and contrast.

Depth 50/100

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 10/100

Very low

Clean and current — no dusty, aged cast.

Luxury 44/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 97/100

Very high

Bold and ownable — memorable as a primary brand color.

UI accent fit 61/100

High

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

Surface fit 12/100

Very low

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

Print safety 72/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #B309BC

For UI

For branding

For interior

For fashion

People also use #B309BC with

Han Purple Viva Magenta Kelly Green Gainsboro Byzantium

UI roles & guardrails

Primary action Safe as a filled button with white label. AA

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 5.7:1. Use

Subtle surface Use #F2CCF4 for cards and hover fills. Tint 80

Avoid beside #BE098B — 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 #B309BC 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: #B309BC;
  --color-base-rgb: 179 9 188;
  --color-base-oklch: oklch(54.6% 0.251 325.7);
  --color-50: #FEF0FE;
  --color-100: #FBD8FD;
  --color-200: #F7B1FB;
  --color-300: #EC7DF2;
  --color-400: #DD4EE4;
  --color-500: #C22ACB;
  --color-600: #94289A;
  --color-700: #68236C;
  --color-800: #441B46;
  --color-900: #2A122B;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  byzantine: {
    50: '#FEF0FE',
    100: '#FBD8FD',
    200: '#F7B1FB',
    300: '#EC7DF2',
    400: '#DD4EE4',
    500: '#C22ACB',
    600: '#94289A',
    700: '#68236C',
    800: '#441B46',
    900: '#2A122B',
  },
}

$base: #B309BC;
$base-ink: #FFFFFF;
$base-50: #FEF0FE;
$base-100: #FBD8FD;
$base-200: #F7B1FB;
$base-300: #EC7DF2;
$base-400: #DD4EE4;
$base-500: #C22ACB;
$base-600: #94289A;
$base-700: #68236C;
$base-800: #441B46;
$base-900: #2A122B;
$base-hover: #910798;
$base-subtle: #EDB0F1;

{
    "color": {
        "base": {
            "value": "#B309BC",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#FEF0FE",
                "type": "color"
            },
            "100": {
                "value": "#FBD8FD",
                "type": "color"
            },
            "200": {
                "value": "#F7B1FB",
                "type": "color"
            },
            "300": {
                "value": "#EC7DF2",
                "type": "color"
            },
            "400": {
                "value": "#DD4EE4",
                "type": "color"
            },
            "500": {
                "value": "#C22ACB",
                "type": "color"
            },
            "600": {
                "value": "#94289A",
                "type": "color"
            },
            "700": {
                "value": "#68236C",
                "type": "color"
            },
            "800": {
                "value": "#441B46",
                "type": "color"
            },
            "900": {
                "value": "#2A122B",
                "type": "color"
            }
        }
    }
}

Palettes built on #B309BC

Color Lab

Pairs with #B309BC

UI roles & guardrails

In real applications

Scales

Every model

Export