What color is #604D99?

#604D99 is a medium, muted indigo. In RGB it is rgb(96, 77, 153), and in HSL hsl(255, 33%, 45%).

Is #604D99 accessible as text?

On white, #604D99 has a contrast ratio of 6.96:1 (passes WCAG AA for body text); on black it is 3.02:1 (fails). For text placed on #604D99, use white for the best readability.

What is the closest Tailwind color to #604D99?

The nearest Tailwind CSS token is sky-800 (#00598A).

What colors go well with #604D99?

#604D99 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #86994D. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #604D99 below.

Is #604D99 good for buttons?

#604D99 works well for buttons and highlights, but use white text on #604D99 — black text only reaches 3.02:1, below the 4.5:1 needed for normal-size labels.

Is #604D99 the same as CSS rebeccapurple?

No — #604D99 is not the CSS named color rebeccapurple, but rebeccapurple (#663399) 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.

#604D99 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #604D99

Not just a swatch — here's how #604D99 works with other colors. Named schemes with #604D99 in its natural role, and a note on why the supporting colors balance it.

Berry & Cream Lead · 5 colors

Lead #604D99 Surface #F5E5D7 Anchor #5C2141 Accent #E5C2C8 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 #604D99 Accent #A5C4C3 Surface #E9D6BF Secondary #9AA0A1 Anchor #22334A

Ultra Violet 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 #604D99 Secondary #7E4632 Surface #EDD8C2 Accent #355248 Anchor #582237

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.

Modern Café Dominant · 5 colors

Dominant #604D99 Anchor #3B2923 Surface #F3E1D1 Accent #749F7D Secondary #3C3734

Ultra Violet 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 #604D99 Secondary #85819D Support #9D9088 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 #604D99 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 34/100

Cool

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

Softness 39/100

Low

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 53/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 59/100

Moderate

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 93/100

Very high

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

Surface fit 18/100

Very low

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

Print safety 84/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #604D99

For UI

For branding

For interior

For fashion

People also use #604D99 with

Glaucous Plum Moss Green Gainsboro Russian Violet

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 7.0:1. Use

Subtle surface Use #E0DCEA for cards and hover fills. Tint 80

Avoid beside #794D99 — 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 #604D99 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: #604D99;
  --color-base-rgb: 96 77 153;
  --color-base-oklch: oklch(47.6% 0.119 292.8);
  --color-50: #F6F5FA;
  --color-100: #E7E3F2;
  --color-200: #CFC9E4;
  --color-300: #ADA2CD;
  --color-400: #8B7EB4;
  --color-500: #6C5D97;
  --color-600: #574C75;
  --color-700: #413A55;
  --color-800: #2C2938;
  --color-900: #1C1A23;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  ultra-violet: {
    50: '#F6F5FA',
    100: '#E7E3F2',
    200: '#CFC9E4',
    300: '#ADA2CD',
    400: '#8B7EB4',
    500: '#6C5D97',
    600: '#574C75',
    700: '#413A55',
    800: '#2C2938',
    900: '#1C1A23',
  },
}

$base: #604D99;
$base-ink: #FFFFFF;
$base-50: #F6F5FA;
$base-100: #E7E3F2;
$base-200: #CFC9E4;
$base-300: #ADA2CD;
$base-400: #8B7EB4;
$base-500: #6C5D97;
$base-600: #574C75;
$base-700: #413A55;
$base-800: #2C2938;
$base-900: #1C1A23;
$base-hover: #4D3E7A;
$base-subtle: #D0CADF;

{
    "color": {
        "base": {
            "value": "#604D99",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F6F5FA",
                "type": "color"
            },
            "100": {
                "value": "#E7E3F2",
                "type": "color"
            },
            "200": {
                "value": "#CFC9E4",
                "type": "color"
            },
            "300": {
                "value": "#ADA2CD",
                "type": "color"
            },
            "400": {
                "value": "#8B7EB4",
                "type": "color"
            },
            "500": {
                "value": "#6C5D97",
                "type": "color"
            },
            "600": {
                "value": "#574C75",
                "type": "color"
            },
            "700": {
                "value": "#413A55",
                "type": "color"
            },
            "800": {
                "value": "#2C2938",
                "type": "color"
            },
            "900": {
                "value": "#1C1A23",
                "type": "color"
            }
        }
    }
}

Palettes built on #604D99

Color Lab

Pairs with #604D99

UI roles & guardrails

In real applications

Scales

Every model

Export