What color is #6573EE?

#6573EE is a light, vivid blue-violet. In RGB it is rgb(101, 115, 238), and in HSL hsl(234, 80%, 66%).

Is #6573EE accessible as text?

On white, #6573EE has a contrast ratio of 4.01:1 (fails WCAG AA for body text); on black it is 5.24:1 (passes). For text placed on #6573EE, use black for the best readability.

What is the closest Tailwind color to #6573EE?

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

What colors go well with #6573EE?

#6573EE pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #EEE063. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #6573EE below.

Is #6573EE good for buttons?

#6573EE works well for buttons and highlights, but use black text on #6573EE — white text only reaches 4.01:1, below the 4.5:1 needed for normal-size labels.

Is #6573EE the same as CSS mediumslateblue?

No — #6573EE is not the CSS named color mediumslateblue, but mediumslateblue (#7B68EE) is the closest CSS named color.

#6573EE Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #6573EE

Not just a swatch — here's how #6573EE works with other colors. Named schemes with #6573EE in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #6573EE Accent #A5C4C2 Surface #EAD5C0 Secondary #9AA0A1 Anchor #21344A

Medium Slate 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 #6573EE Surface #14161A Highlight #F4F6F8 Secondary #5B6672 Accent #8A9CFF

Medium Slate 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 Medium Slate Blue.

Vintage Leather Lead · 5 colors

Lead #6573EE Secondary #7F4535 Surface #EED7C2 Accent #365247 Anchor #582239

Medium 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.

Berry & Cream Lead · 5 colors

Lead #6573EE Surface #F6E5D8 Anchor #5B2143 Accent #E5C2C9 Secondary #322B2F

Medium 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 #6573EE Secondary #A1ABD7 Support #9D9088 Ink #18140F

Medium 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 Medium Slate Blue carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #6573EE 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 14/100

Cool

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

Softness 40/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 42/100

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 29/100

Low

A faint retro warmth without tipping into sepia.

Luxury 43/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 50/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 84/100

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 70/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #6573EE

For UI

For branding

For interior

For fashion

People also use #6573EE with

Baby Blue Medium Purple Flax Gainsboro Prussian Blue

UI roles & guardrails

Primary action Safe as a filled button with near-black label. AA

Body text Do not use for body copy on light surfaces. Avoid

Large display Fine for headings 24px+ on white. Pass

Background Pair with #141310 text at 4.6:1. Use

Subtle surface Use #E4E6F8 for cards and hover fills. Tint 80

Avoid beside #8363EE — 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 #6573EE 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: #6573EE;
  --color-base-rgb: 101 115 238;
  --color-base-oklch: oklch(60.8% 0.183 274.7);
  --color-50: #F1F2FE;
  --color-100: #D9DDFC;
  --color-200: #B6BCF7;
  --color-300: #848EEB;
  --color-400: #5764DB;
  --color-500: #3442C1;
  --color-600: #2F3993;
  --color-700: #272E68;
  --color-800: #1D2144;
  --color-900: #141629;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  medium-slate-blue: {
    50: '#F1F2FE',
    100: '#D9DDFC',
    200: '#B6BCF7',
    300: '#848EEB',
    400: '#5764DB',
    500: '#3442C1',
    600: '#2F3993',
    700: '#272E68',
    800: '#1D2144',
    900: '#141629',
  },
}

$base: #6573EE;
$base-ink: #141310;
$base-50: #F1F2FE;
$base-100: #D9DDFC;
$base-200: #B6BCF7;
$base-300: #848EEB;
$base-400: #5764DB;
$base-500: #3442C1;
$base-600: #2F3993;
$base-700: #272E68;
$base-800: #1D2144;
$base-900: #141629;
$base-hover: #263AE7;
$base-subtle: #D5D8F5;

{
    "color": {
        "base": {
            "value": "#6573EE",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1F2FE",
                "type": "color"
            },
            "100": {
                "value": "#D9DDFC",
                "type": "color"
            },
            "200": {
                "value": "#B6BCF7",
                "type": "color"
            },
            "300": {
                "value": "#848EEB",
                "type": "color"
            },
            "400": {
                "value": "#5764DB",
                "type": "color"
            },
            "500": {
                "value": "#3442C1",
                "type": "color"
            },
            "600": {
                "value": "#2F3993",
                "type": "color"
            },
            "700": {
                "value": "#272E68",
                "type": "color"
            },
            "800": {
                "value": "#1D2144",
                "type": "color"
            },
            "900": {
                "value": "#141629",
                "type": "color"
            }
        }
    }
}

Palettes built on #6573EE

Color Lab

Pairs with #6573EE

UI roles & guardrails

In real applications

Scales

Every model

Export