What color is #604AEE?

#604AEE is a medium, vivid indigo. In RGB it is rgb(96, 74, 238), and in HSL hsl(248, 83%, 61%).

Is #604AEE accessible as text?

On white, #604AEE has a contrast ratio of 5.66:1 (passes WCAG AA for body text); on black it is 3.71:1 (fails). For text placed on #604AEE, use white for the best readability.

What is the closest Tailwind color to #604AEE?

The nearest Tailwind CSS token is indigo-600 (#4F39F6).

What colors go well with #604AEE?

#604AEE pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #D8EE49. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #604AEE below.

Is #604AEE good for buttons?

#604AEE works well for buttons and highlights, but use white text on #604AEE — black text only reaches 3.71:1, below the 4.5:1 needed for normal-size labels.

Is #604AEE the same as CSS slateblue?

No — #604AEE is not the CSS named color slateblue, but slateblue (#6A5ACD) is the closest CSS named color.

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

Palettes built on #604AEE

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

Tech Product Signal · 5 colors

Signal #604AEE Surface #14161A Highlight #F4F6F8 Secondary #5B6672 Accent #8079FF

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

Berry & Cream Lead · 5 colors

Lead #604AEE Surface #F5E5D8 Anchor #5B2142 Accent #E5C2C9 Secondary #322B2F

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

Minimal Editorial Surface · 5 colors

Surface #F8F4EF Accent #604AEE Secondary #8E92C9 Support #9D9088 Ink #18140F

Iris 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 Iris carrying the quiet middle.

Coastal Morning Lead · 5 colors

Lead #604AEE Accent #A5C4C3 Surface #EAD5BF Secondary #9AA0A1 Anchor #22334A

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

Sunset Warmth Glow · 5 colors

Glow #604AEE Secondary #E86A70 Accent #F5934D Anchor #583B57 Surface #F7E7D7

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

Build a working theme in the generator →

Color Lab

How #604AEE 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 19/100

Cool

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

Softness 30/100

Low

Firm and assertive — carries weight and contrast.

Depth 51/100

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 14/100

Very low

Clean and current — no dusty, aged cast.

Luxury 46/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 90/100

Very high

Bold and ownable — memorable as a primary brand color.

UI accent fit 70/100

High

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

Surface fit 11/100

Very low

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

Print safety 65/100

High

Prints close, with a slight loss of vibrancy.

Pairs with #604AEE

For UI

For branding

For interior

For fashion

People also use #604AEE with

Picton Blue Medium Orchid Pear Gainsboro Prussian Blue

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 #E2DFF7 for cards and hover fills. Tint 80

Avoid beside #9649EE — 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 #604AEE 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: #604AEE;
  --color-base-rgb: 96 74 238;
  --color-base-oklch: oklch(53.7% 0.233 281.2);
  --color-50: #F2F0FE;
  --color-100: #DDD9FD;
  --color-200: #BDB4F8;
  --color-300: #9082ED;
  --color-400: #6754DE;
  --color-500: #4531C3;
  --color-600: #3B2D95;
  --color-700: #2F2669;
  --color-800: #221C44;
  --color-900: #16132A;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  iris: {
    50: '#F2F0FE',
    100: '#DDD9FD',
    200: '#BDB4F8',
    300: '#9082ED',
    400: '#6754DE',
    500: '#4531C3',
    600: '#3B2D95',
    700: '#2F2669',
    800: '#221C44',
    900: '#16132A',
  },
}

$base: #604AEE;
$base-ink: #FFFFFF;
$base-50: #F2F0FE;
$base-100: #DDD9FD;
$base-200: #BDB4F8;
$base-300: #9082ED;
$base-400: #6754DE;
$base-500: #4531C3;
$base-600: #3B2D95;
$base-700: #2F2669;
$base-800: #221C44;
$base-900: #16132A;
$base-hover: #3115E4;
$base-subtle: #D3CEF4;

{
    "color": {
        "base": {
            "value": "#604AEE",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F2F0FE",
                "type": "color"
            },
            "100": {
                "value": "#DDD9FD",
                "type": "color"
            },
            "200": {
                "value": "#BDB4F8",
                "type": "color"
            },
            "300": {
                "value": "#9082ED",
                "type": "color"
            },
            "400": {
                "value": "#6754DE",
                "type": "color"
            },
            "500": {
                "value": "#4531C3",
                "type": "color"
            },
            "600": {
                "value": "#3B2D95",
                "type": "color"
            },
            "700": {
                "value": "#2F2669",
                "type": "color"
            },
            "800": {
                "value": "#221C44",
                "type": "color"
            },
            "900": {
                "value": "#16132A",
                "type": "color"
            }
        }
    }
}

Palettes built on #604AEE

Color Lab

Pairs with #604AEE

UI roles & guardrails

In real applications

Scales

Every model

Export