What color is #6563CF?

#6563CF is a medium blue-violet. In RGB it is rgb(101, 99, 207), and in HSL hsl(241, 53%, 60%).

Is #6563CF accessible as text?

On white, #6563CF has a contrast ratio of 4.95:1 (passes WCAG AA for body text); on black it is 4.24:1 (fails). For text placed on #6563CF, use white for the best readability.

What is the closest Tailwind color to #6563CF?

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

What colors go well with #6563CF?

#6563CF pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #CDCF63. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #6563CF below.

Is #6563CF good for buttons?

#6563CF works well for buttons and highlights, but use white text on #6563CF — black text only reaches 4.24:1, below the 4.5:1 needed for normal-size labels.

Is #6563CF the same as CSS slateblue?

No — #6563CF is not the CSS named color slateblue, but slateblue (#6A5ACD) is the closest CSS named color.

#6563CF Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #6563CF

Not just a swatch — here's how #6563CF works with other colors. Named schemes with #6563CF in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #6563CF Accent #A5C4C3 Surface #EAD5BF Secondary #9AA0A1 Anchor #22334A

Slate Blue 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 #6563CF Secondary #7F4534 Surface #EDD7C2 Accent #365247 Anchor #582238

Slate 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.

Modern Café Dominant · 5 colors

Dominant #6563CF Anchor #3B2923 Surface #F3E1D2 Accent #759F7B Secondary #3C3734

Slate Blue 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.

Berry & Cream Lead · 5 colors

Lead #6563CF Surface #F5E5D8 Anchor #5B2142 Accent #E5C2C9 Secondary #322B2F

Slate 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 #6563CF Secondary #969AC1 Support #9D9088 Ink #18140F

Slate 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 Slate Blue carrying the quiet middle.

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Color Lab

How #6563CF 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 40/100

Low

Middle-weight — neither delicate nor heavy.

Depth 46/100

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 40/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 49/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 44/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 97/100

Very high

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

Surface fit 13/100

Very low

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

Print safety 76/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #6563CF

For UI

For branding

For interior

For fashion

People also use #6563CF with

Iceberg Amethyst Citrine 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 5.0:1. Use

Subtle surface Use #E3E3F2 for cards and hover fills. Tint 80

Avoid beside #8963CF — 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 #6563CF 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: #6563CF;
  --color-base-rgb: 101 99 207;
  --color-base-oklch: oklch(55.7% 0.162 280.6);
  --color-50: #F3F3FC;
  --color-100: #E0DFF6;
  --color-200: #C1C1EC;
  --color-300: #9795DA;
  --color-400: #6F6DC5;
  --color-500: #4D4CA9;
  --color-600: #414082;
  --color-700: #33325D;
  --color-800: #24243D;
  --color-900: #181726;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  slate-blue: {
    50: '#F3F3FC',
    100: '#E0DFF6',
    200: '#C1C1EC',
    300: '#9795DA',
    400: '#6F6DC5',
    500: '#4D4CA9',
    600: '#414082',
    700: '#33325D',
    800: '#24243D',
    900: '#181726',
  },
}

$base: #6563CF;
$base-ink: #FFFFFF;
$base-50: #F3F3FC;
$base-100: #E0DFF6;
$base-200: #C1C1EC;
$base-300: #9795DA;
$base-400: #6F6DC5;
$base-500: #4D4CA9;
$base-600: #414082;
$base-700: #33325D;
$base-800: #24243D;
$base-900: #181726;
$base-hover: #3C3ABB;
$base-subtle: #D4D4ED;

{
    "color": {
        "base": {
            "value": "#6563CF",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3F3FC",
                "type": "color"
            },
            "100": {
                "value": "#E0DFF6",
                "type": "color"
            },
            "200": {
                "value": "#C1C1EC",
                "type": "color"
            },
            "300": {
                "value": "#9795DA",
                "type": "color"
            },
            "400": {
                "value": "#6F6DC5",
                "type": "color"
            },
            "500": {
                "value": "#4D4CA9",
                "type": "color"
            },
            "600": {
                "value": "#414082",
                "type": "color"
            },
            "700": {
                "value": "#33325D",
                "type": "color"
            },
            "800": {
                "value": "#24243D",
                "type": "color"
            },
            "900": {
                "value": "#181726",
                "type": "color"
            }
        }
    }
}

Palettes built on #6563CF

Color Lab

Pairs with #6563CF

UI roles & guardrails

In real applications

Scales

Every model

Export