What color is #644D83?

#644D83 is a medium, muted violet. In RGB it is rgb(100, 77, 131), and in HSL hsl(266, 26%, 41%).

Is #644D83 accessible as text?

On white, #644D83 has a contrast ratio of 7.16:1 (passes WCAG AA for body text); on black it is 2.93:1 (fails). For text placed on #644D83, use white for the best readability.

What is the closest Tailwind color to #644D83?

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

What colors go well with #644D83?

#644D83 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #6C844D. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #644D83 below.

Is #644D83 good for buttons?

#644D83 works well for buttons and highlights, but use white text on #644D83 — black text only reaches 2.93:1, below the 4.5:1 needed for normal-size labels.

Is #644D83 the same as CSS darkslateblue?

No — #644D83 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.

#644D83 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #644D83

Not just a swatch — here's how #644D83 works with other colors. Named schemes with #644D83 in its natural role, and a note on why the supporting colors balance it.

Berry & Cream Lead · 5 colors

Lead #644D83 Surface #F5E6D7 Anchor #5C2140 Accent #E5C2C7 Secondary #332B2F

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

Coastal Morning Lead · 5 colors

Lead #644D83 Accent #A5C4C4 Surface #E9D6BF Secondary #9AA0A1 Anchor #23334B

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

Nordic Calm Accent · 5 colors

Accent #644D83 Secondary #AFB4B8 Surface #F1F2F0 Support #7F92A7 Anchor #2E3236

Ultra Violet keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.

Vintage Leather Lead · 5 colors

Lead #644D83 Secondary #7E4631 Surface #EDD8C1 Accent #355248 Anchor #592236

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

Minimal Editorial Surface · 5 colors

Surface #F8F4EF Accent #644D83 Secondary #867E92 Support #9C9088 Ink #18140F

Ultra Violet 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 Ultra Violet carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #644D83 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 42/100

Neutral

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

Softness 41/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 53/100

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 65/100

High

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

Luxury 59/100

Moderate

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 84/100

Very high

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

Surface fit 28/100

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 #644D83

For UI

For branding

For interior

For fashion

People also use #644D83 with

Very Peri Plum Olive Green Gainsboro Onyx

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 7.2:1. Use

Subtle surface Use #E0DBE7 for cards and hover fills. Tint 80

Avoid beside #774D84 — 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 #644D83 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: #644D83;
  --color-base-rgb: 100 77 131;
  --color-base-oklch: oklch(46.7% 0.089 302.7);
  --color-50: #F7F5FA;
  --color-100: #EAE5F0;
  --color-200: #D5CCE1;
  --color-300: #B5A7C8;
  --color-400: #9683AF;
  --color-500: #776491;
  --color-600: #5F5171;
  --color-700: #463D52;
  --color-800: #302A37;
  --color-900: #1E1B22;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  ultra-violet: {
    50: '#F7F5FA',
    100: '#EAE5F0',
    200: '#D5CCE1',
    300: '#B5A7C8',
    400: '#9683AF',
    500: '#776491',
    600: '#5F5171',
    700: '#463D52',
    800: '#302A37',
    900: '#1E1B22',
  },
}

$base: #644D83;
$base-ink: #FFFFFF;
$base-50: #F7F5FA;
$base-100: #EAE5F0;
$base-200: #D5CCE1;
$base-300: #B5A7C8;
$base-400: #9683AF;
$base-500: #776491;
$base-600: #5F5171;
$base-700: #463D52;
$base-800: #302A37;
$base-900: #1E1B22;
$base-hover: #513E69;
$base-subtle: #D1C9DB;

{
    "color": {
        "base": {
            "value": "#644D83",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F7F5FA",
                "type": "color"
            },
            "100": {
                "value": "#EAE5F0",
                "type": "color"
            },
            "200": {
                "value": "#D5CCE1",
                "type": "color"
            },
            "300": {
                "value": "#B5A7C8",
                "type": "color"
            },
            "400": {
                "value": "#9683AF",
                "type": "color"
            },
            "500": {
                "value": "#776491",
                "type": "color"
            },
            "600": {
                "value": "#5F5171",
                "type": "color"
            },
            "700": {
                "value": "#463D52",
                "type": "color"
            },
            "800": {
                "value": "#302A37",
                "type": "color"
            },
            "900": {
                "value": "#1E1B22",
                "type": "color"
            }
        }
    }
}

Palettes built on #644D83

Color Lab

Pairs with #644D83

UI roles & guardrails

In real applications

Scales

Every model

Export