What color is #566ADD?

#566ADD is a medium blue-violet. In RGB it is rgb(86, 106, 221), and in HSL hsl(231, 67%, 60%).

Is #566ADD accessible as text?

On white, #566ADD has a contrast ratio of 4.67:1 (passes WCAG AA for body text); on black it is 4.50:1 (passes). For text placed on #566ADD, use white for the best readability.

What is the closest Tailwind color to #566ADD?

The nearest Tailwind CSS token is indigo-500 (#615FFF).

What colors go well with #566ADD?

#566ADD pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #DDC955. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #566ADD below.

Is #566ADD good for buttons?

#566ADD works for buttons; white text has the higher contrast, so prefer it for labels.

Is #566ADD the same as CSS royalblue?

No — #566ADD is not the CSS named color royalblue, but royalblue (#4169E1) is the closest CSS named color.

#566ADD Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #566ADD

Not just a swatch — here's how #566ADD works with other colors. Named schemes with #566ADD in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #566ADD Accent #A5C4C2 Surface #EAD5C0 Secondary #9AA0A1 Anchor #21344A

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

Tech Product Signal · 5 colors

Signal #566ADD Surface #14161A Highlight #F4F6F8 Secondary #5B6672 Accent #7A92FC

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

Vintage Leather Lead · 5 colors

Lead #566ADD Secondary #7F4535 Surface #EED7C2 Accent #365247 Anchor #582239

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

Berry & Cream Lead · 5 colors

Lead #566ADD Surface #F6E5D8 Anchor #5B2143 Accent #E5C2C9 Secondary #322B2F

Royal Blue 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 #566ADD Secondary #94A0C9 Support #9D8F88 Ink #18140F

Royal Blue 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 Royal Blue carrying the quiet middle.

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Color Lab

How #566ADD 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 13/100

Cool

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

Softness 39/100

Low

Middle-weight — neither delicate nor heavy.

Depth 45/100

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 34/100

Low

A faint retro warmth without tipping into sepia.

Luxury 47/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 47/100

Moderate

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 14/100

Very low

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

Print safety 71/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #566ADD

For UI

For branding

For interior

For fashion

People also use #566ADD with

Sky Blue Medium Slate Blue Saffron 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 4.7:1. Use

Subtle surface Use #E1E4F4 for cards and hover fills. Tint 80

Avoid beside #6E55DD — 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 #566ADD 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: #566ADD;
  --color-base-rgb: 86 106 221;
  --color-base-oklch: oklch(57.0% 0.176 272.2);
  --color-50: #F2F3FD;
  --color-100: #DCE0F9;
  --color-200: #BBC3F1;
  --color-300: #8C99E3;
  --color-400: #6272D0;
  --color-500: #3F51B5;
  --color-600: #37448B;
  --color-700: #2C3462;
  --color-800: #202541;
  --color-900: #161828;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  royal-blue: {
    50: '#F2F3FD',
    100: '#DCE0F9',
    200: '#BBC3F1',
    300: '#8C99E3',
    400: '#6272D0',
    500: '#3F51B5',
    600: '#37448B',
    700: '#2C3462',
    800: '#202541',
    900: '#161828',
  },
}

$base: #566ADD;
$base-ink: #FFFFFF;
$base-50: #F2F3FD;
$base-100: #DCE0F9;
$base-200: #BBC3F1;
$base-300: #8C99E3;
$base-400: #6272D0;
$base-500: #3F51B5;
$base-600: #37448B;
$base-700: #2C3462;
$base-800: #202541;
$base-900: #161828;
$base-hover: #2841CC;
$base-subtle: #D1D5F0;

{
    "color": {
        "base": {
            "value": "#566ADD",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F2F3FD",
                "type": "color"
            },
            "100": {
                "value": "#DCE0F9",
                "type": "color"
            },
            "200": {
                "value": "#BBC3F1",
                "type": "color"
            },
            "300": {
                "value": "#8C99E3",
                "type": "color"
            },
            "400": {
                "value": "#6272D0",
                "type": "color"
            },
            "500": {
                "value": "#3F51B5",
                "type": "color"
            },
            "600": {
                "value": "#37448B",
                "type": "color"
            },
            "700": {
                "value": "#2C3462",
                "type": "color"
            },
            "800": {
                "value": "#202541",
                "type": "color"
            },
            "900": {
                "value": "#161828",
                "type": "color"
            }
        }
    }
}

Palettes built on #566ADD

Color Lab

Pairs with #566ADD

UI roles & guardrails

In real applications

Scales

Every model

Export