What color is #633660?

#633660 is a dark, muted purple. In RGB it is rgb(99, 54, 96), and in HSL hsl(304, 29%, 30%).

Is #633660 accessible as text?

On white, #633660 has a contrast ratio of 9.43:1 (passes WCAG AA for body text); on black it is 2.23:1 (fails). For text placed on #633660, use white for the best readability.

What is the closest Tailwind color to #633660?

The nearest Tailwind CSS token is mauve-600 (#594C5B).

What colors go well with #633660?

#633660 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #366339. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #633660 below.

Is #633660 good for buttons?

#633660 works well for buttons and highlights, but use white text on #633660 — black text only reaches 2.23:1, below the 4.5:1 needed for normal-size labels.

Is #633660 the same as CSS darkslateblue?

No — #633660 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.

#633660 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #633660

Not just a swatch — here's how #633660 works with other colors. Named schemes with #633660 in its natural role, and a note on why the supporting colors balance it.

Berry & Cream Lead · 5 colors

Lead #633660 Surface #F5E6D7 Anchor #5D203D Accent #E6C2C5 Secondary #332B2E

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

Vintage Leather Lead · 5 colors

Lead #633660 Secondary #7D472E Surface #ECD8C1 Accent #34524A Anchor #592234

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 #633660 Anchor #3B2922 Surface #F2E2D1 Accent #9D9462 Secondary #3C3833

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.

Japanese Sand Base · 5 colors

Base #633660 Surface #F1E8DC Highlight #F7F0E7 Secondary #BDADA1 Ink #2B2723

Byzantium sets a calm, sun-bleached base here, wrapped in bone and paper off-whites and a soft greige, with a single ink accent for wabi-sabi restraint.

Minimal Editorial Surface · 5 colors

Surface #F7F4EF Accent #633660 Secondary #7B6A79 Support #9C9087 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.

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Color Lab

How #633660 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 54/100

Neutral

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

Softness 36/100

Low

Middle-weight — neither delicate nor heavy.

Depth 59/100

Moderate

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

Naturalness 3/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 65/100

High

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

Luxury 64/100

High

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

Brand distinctiveness 24/100

Low

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

UI accent fit 68/100

High

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

Surface fit 32/100

Low

Usable as a tinted surface in measured doses.

Print safety 90/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #633660

For UI

For branding

For interior

For fashion

People also use #633660 with

Ultra Violet Eggplant Hunter Green Gainsboro

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 9.4:1. Use

Subtle surface Use #E3D4E2 for cards and hover fills. Tint 80

Avoid beside #633651 — 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 #633660 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: #633660;
  --color-base-rgb: 99 54 96;
  --color-base-oklch: oklch(40.5% 0.088 329.5);
  --color-50: #FAF5F9;
  --color-100: #F1E4F0;
  --color-200: #E2CAE0;
  --color-300: #CAA5C8;
  --color-400: #B181AE;
  --color-500: #946191;
  --color-600: #734F71;
  --color-700: #533C52;
  --color-800: #372936;
  --color-900: #231B22;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  byzantium: {
    50: '#FAF5F9',
    100: '#F1E4F0',
    200: '#E2CAE0',
    300: '#CAA5C8',
    400: '#B181AE',
    500: '#946191',
    600: '#734F71',
    700: '#533C52',
    800: '#372936',
    900: '#231B22',
  },
}

$base: #633660;
$base-ink: #FFFFFF;
$base-50: #FAF5F9;
$base-100: #F1E4F0;
$base-200: #E2CAE0;
$base-300: #CAA5C8;
$base-400: #B181AE;
$base-500: #946191;
$base-600: #734F71;
$base-700: #533C52;
$base-800: #372936;
$base-900: #231B22;
$base-hover: #4F2B4D;
$base-subtle: #D5BED4;

{
    "color": {
        "base": {
            "value": "#633660",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#FAF5F9",
                "type": "color"
            },
            "100": {
                "value": "#F1E4F0",
                "type": "color"
            },
            "200": {
                "value": "#E2CAE0",
                "type": "color"
            },
            "300": {
                "value": "#CAA5C8",
                "type": "color"
            },
            "400": {
                "value": "#B181AE",
                "type": "color"
            },
            "500": {
                "value": "#946191",
                "type": "color"
            },
            "600": {
                "value": "#734F71",
                "type": "color"
            },
            "700": {
                "value": "#533C52",
                "type": "color"
            },
            "800": {
                "value": "#372936",
                "type": "color"
            },
            "900": {
                "value": "#231B22",
                "type": "color"
            }
        }
    }
}

Palettes built on #633660

Color Lab

Pairs with #633660

UI roles & guardrails

In real applications

Scales

Every model

Export