What color is #8664FF?

#8664FF is a light, vivid indigo. In RGB it is rgb(134, 100, 255), and in HSL hsl(253, 100%, 70%).

Is #8664FF accessible as text?

On white, #8664FF has a contrast ratio of 3.98:1 (fails WCAG AA for body text); on black it is 5.28:1 (passes). For text placed on #8664FF, use black for the best readability.

What is the closest Tailwind color to #8664FF?

The nearest Tailwind CSS token is violet-500 (#8E51FF).

What colors go well with #8664FF?

#8664FF pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #DEFF66. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #8664FF below.

Is #8664FF good for buttons?

#8664FF works well for buttons and highlights, but use black text on #8664FF — white text only reaches 3.98:1, below the 4.5:1 needed for normal-size labels.

Is #8664FF the same as CSS mediumslateblue?

No — #8664FF is not the CSS named color mediumslateblue, but mediumslateblue (#7B68EE) is the closest CSS named color.

#8664FF Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #8664FF

Not just a swatch — here's how #8664FF works with other colors. Named schemes with #8664FF in its natural role, and a note on why the supporting colors balance it.

Tech Product Signal · 5 colors

Signal #8664FF Surface #14161A Highlight #F4F6F8 Secondary #5B6672 Accent #A890FF

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.

Berry & Cream Lead · 5 colors

Lead #8664FF Surface #F5E5D7 Anchor #5C2141 Accent #E5C2C8 Secondary #332B2F

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 #8664FF Secondary #AEAADF 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.

Coastal Morning Lead · 5 colors

Lead #8664FF Accent #A5C4C3 Surface #E9D6BF Secondary #9AA0A1 Anchor #22334A

Medium Slate Blue 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 #8664FF Secondary #E86A6E Accent #F5934B Anchor #583B57 Surface #F7E7D7

Medium Slate Blue 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 #8664FF 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 24/100

Cool

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

Softness 36/100

Low

Middle-weight — neither delicate nor heavy.

Depth 41/100

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 18/100

Very low

Clean and current — no dusty, aged cast.

Luxury 40/100

Low

Understated — leans refined without going austere.

Brand distinctiveness 85/100

Very high

Bold and ownable — memorable as a primary brand color.

UI accent fit 68/100

High

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

Surface fit 19/100

Very low

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

Print safety 70/100

High

Prints close, with a slight loss of vibrancy.

Pairs with #8664FF

For UI

For branding

For interior

For fashion

People also use #8664FF with

Maya Blue Heliotrope Flax Gainsboro Russian Violet

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 4.7:1. Use

Subtle surface Use #E9E5FB for cards and hover fills. Tint 80

Avoid beside #BA66FF — 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 #8664FF at work across the surfaces designers actually ship.

Website / UI

Northwind Sign up

Build faster.

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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: #8664FF;
  --color-base-rgb: 134 100 255;
  --color-base-oklch: oklch(61.9% 0.220 288.4);
  --color-50: #F3F0FE;
  --color-100: #E0D8FD;
  --color-200: #C1B1FC;
  --color-300: #9377F8;
  --color-400: #6A46EC;
  --color-500: #4922D2;
  --color-600: #3E239F;
  --color-700: #311F70;
  --color-800: #231848;
  --color-900: #17112C;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  medium-slate-blue: {
    50: '#F3F0FE',
    100: '#E0D8FD',
    200: '#C1B1FC',
    300: '#9377F8',
    400: '#6A46EC',
    500: '#4922D2',
    600: '#3E239F',
    700: '#311F70',
    800: '#231848',
    900: '#17112C',
  },
}

$base: #8664FF;
$base-ink: #141310;
$base-50: #F3F0FE;
$base-100: #E0D8FD;
$base-200: #C1B1FC;
$base-300: #9377F8;
$base-400: #6A46EC;
$base-500: #4922D2;
$base-600: #3E239F;
$base-700: #311F70;
$base-800: #231848;
$base-900: #17112C;
$base-hover: #4F1FFF;
$base-subtle: #DED7F9;

{
    "color": {
        "base": {
            "value": "#8664FF",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3F0FE",
                "type": "color"
            },
            "100": {
                "value": "#E0D8FD",
                "type": "color"
            },
            "200": {
                "value": "#C1B1FC",
                "type": "color"
            },
            "300": {
                "value": "#9377F8",
                "type": "color"
            },
            "400": {
                "value": "#6A46EC",
                "type": "color"
            },
            "500": {
                "value": "#4922D2",
                "type": "color"
            },
            "600": {
                "value": "#3E239F",
                "type": "color"
            },
            "700": {
                "value": "#311F70",
                "type": "color"
            },
            "800": {
                "value": "#231848",
                "type": "color"
            },
            "900": {
                "value": "#17112C",
                "type": "color"
            }
        }
    }
}

Palettes built on #8664FF

Color Lab

Pairs with #8664FF

UI roles & guardrails

In real applications

Scales

Every model

Export