What color is #533D99?

#533D99 is a medium indigo. In RGB it is rgb(83, 61, 153), and in HSL hsl(254, 43%, 42%).

Is #533D99 accessible as text?

On white, #533D99 has a contrast ratio of 8.42:1 (passes WCAG AA for body text); on black it is 2.50:1 (fails). For text placed on #533D99, use white for the best readability.

What is the closest Tailwind color to #533D99?

The nearest Tailwind CSS token is violet-900 (#4D179A).

What colors go well with #533D99?

#533D99 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #84993D. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #533D99 below.

Is #533D99 good for buttons?

#533D99 works well for buttons and highlights, but use white text on #533D99 — black text only reaches 2.50:1, below the 4.5:1 needed for normal-size labels.

Is #533D99 the same as CSS darkslateblue?

No — #533D99 is not the CSS named color darkslateblue, but darkslateblue (#483D8B) is the closest CSS named color.

#533D99 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #533D99

Not just a swatch — here's how #533D99 works with other colors. Named schemes with #533D99 in its natural role, and a note on why the supporting colors balance it.

Berry & Cream Lead · 5 colors

Lead #533D99 Surface #F5E5D7 Anchor #5C2141 Accent #E5C2C8 Secondary #332B2F

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

Coastal Morning Lead · 5 colors

Lead #533D99 Accent #A5C4C3 Surface #E9D6BF Secondary #9AA0A1 Anchor #22334A

Dark 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 #533D99 Secondary #7E4633 Surface #EDD8C2 Accent #355248 Anchor #582237

Dark 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 #533D99 Anchor #3B2923 Surface #F3E1D2 Accent #749F7D Secondary #3C3734

Dark 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.

Minimal Editorial Surface · 5 colors

Surface #F8F4EF Accent #533D99 Secondary #787495 Support #9D9088 Ink #18140F

Dark 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 Dark Slate Blue carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #533D99 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 29/100

Cool

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

Softness 34/100

Low

Middle-weight — neither delicate nor heavy.

Depth 58/100

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 41/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 61/100

High

Restrained and premium — deep, quiet, high-end packaging and fashion.

Brand distinctiveness 39/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 86/100

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 80/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #533D99

For UI

For branding

For interior

For fashion

People also use #533D99 with

Very Peri Plum Moss Green Gainsboro Russian Violet

UI roles & guardrails

Primary action Safe as a filled button with white label. AAA

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 8.4:1. Use

Subtle surface Use #DDD8EB for cards and hover fills. Tint 80

Avoid beside #713D99 — 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 #533D99 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: #533D99;
  --color-base-rgb: 83 61 153;
  --color-base-oklch: oklch(43.5% 0.144 290.1);
  --color-50: #F5F4FB;
  --color-100: #E6E1F4;
  --color-200: #CDC5E8;
  --color-300: #A99CD3;
  --color-400: #8675BD;
  --color-500: #6655A0;
  --color-600: #53467C;
  --color-700: #3E3659;
  --color-800: #2B263B;
  --color-900: #1B1924;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  dark-slate-blue: {
    50: '#F5F4FB',
    100: '#E6E1F4',
    200: '#CDC5E8',
    300: '#A99CD3',
    400: '#8675BD',
    500: '#6655A0',
    600: '#53467C',
    700: '#3E3659',
    800: '#2B263B',
    900: '#1B1924',
  },
}

$base: #533D99;
$base-ink: #FFFFFF;
$base-50: #F5F4FB;
$base-100: #E6E1F4;
$base-200: #CDC5E8;
$base-300: #A99CD3;
$base-400: #8675BD;
$base-500: #6655A0;
$base-600: #53467C;
$base-700: #3E3659;
$base-800: #2B263B;
$base-900: #1B1924;
$base-hover: #42317B;
$base-subtle: #CBC4E1;

{
    "color": {
        "base": {
            "value": "#533D99",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F5F4FB",
                "type": "color"
            },
            "100": {
                "value": "#E6E1F4",
                "type": "color"
            },
            "200": {
                "value": "#CDC5E8",
                "type": "color"
            },
            "300": {
                "value": "#A99CD3",
                "type": "color"
            },
            "400": {
                "value": "#8675BD",
                "type": "color"
            },
            "500": {
                "value": "#6655A0",
                "type": "color"
            },
            "600": {
                "value": "#53467C",
                "type": "color"
            },
            "700": {
                "value": "#3E3659",
                "type": "color"
            },
            "800": {
                "value": "#2B263B",
                "type": "color"
            },
            "900": {
                "value": "#1B1924",
                "type": "color"
            }
        }
    }
}