What color is #575BBB?

#575BBB is a medium blue-violet. In RGB it is rgb(87, 91, 187), and in HSL hsl(238, 42%, 54%).

Is #575BBB accessible as text?

On white, #575BBB has a contrast ratio of 5.80:1 (passes WCAG AA for body text); on black it is 3.62:1 (fails). For text placed on #575BBB, use white for the best readability.

What is the closest Tailwind color to #575BBB?

The nearest Tailwind CSS token is sky-700 (#0069A8).

What colors go well with #575BBB?

#575BBB pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #BBB858. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #575BBB below.

Is #575BBB good for buttons?

#575BBB works well for buttons and highlights, but use white text on #575BBB — black text only reaches 3.62:1, below the 4.5:1 needed for normal-size labels.

Is #575BBB the same as CSS slateblue?

No — #575BBB is not the CSS named color slateblue, but slateblue (#6A5ACD) is the closest CSS named color.

#575BBB Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #575BBB

Not just a swatch — here's how #575BBB works with other colors. Named schemes with #575BBB in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #575BBB Accent #A5C4C2 Surface #EAD5BF Secondary #9AA0A1 Anchor #22344A

Tanzanite 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 #575BBB Secondary #7F4534 Surface #EED7C2 Accent #365247 Anchor #582239

Tanzanite 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 #575BBB Anchor #3B2923 Surface #F3E1D2 Accent #769F7B Secondary #3C3734

Tanzanite 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 #575BBB Surface #F6E5D8 Anchor #5B2142 Accent #E5C2C9 Secondary #322B2F

Tanzanite 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 #575BBB Secondary #8A8FB2 Support #9D9088 Ink #18140F

Tanzanite 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 Tanzanite carrying the quiet middle.

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Color Lab

How #575BBB 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 21/100

Cool

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

Softness 39/100

Low

Middle-weight — neither delicate nor heavy.

Depth 50/100

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 43/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 53/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 40/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 100/100

Very high

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

Surface fit 9/100

Very low

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

Print safety 77/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #575BBB

For UI

For branding

For interior

For fashion

People also use #575BBB with

Iceberg Amethyst Dark Khaki 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 5.8:1. Use

Subtle surface Use #E0E1EF for cards and hover fills. Tint 80

Avoid beside #7658BB — 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 #575BBB 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: #575BBB;
  --color-base-rgb: 87 91 187;
  --color-base-oklch: oklch(51.8% 0.148 278.1);
  --color-50: #F4F4FB;
  --color-100: #E2E2F4;
  --color-200: #C5C6E7;
  --color-300: #9C9ED3;
  --color-400: #7679BC;
  --color-500: #55589F;
  --color-600: #47497B;
  --color-700: #363858;
  --color-800: #26273B;
  --color-900: #191924;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  tanzanite: {
    50: '#F4F4FB',
    100: '#E2E2F4',
    200: '#C5C6E7',
    300: '#9C9ED3',
    400: '#7679BC',
    500: '#55589F',
    600: '#47497B',
    700: '#363858',
    800: '#26273B',
    900: '#191924',
  },
}

$base: #575BBB;
$base-ink: #FFFFFF;
$base-50: #F4F4FB;
$base-100: #E2E2F4;
$base-200: #C5C6E7;
$base-300: #9C9ED3;
$base-400: #7679BC;
$base-500: #55589F;
$base-600: #47497B;
$base-700: #363858;
$base-800: #26273B;
$base-900: #191924;
$base-hover: #40439C;
$base-subtle: #D1D1E7;

{
    "color": {
        "base": {
            "value": "#575BBB",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F4F4FB",
                "type": "color"
            },
            "100": {
                "value": "#E2E2F4",
                "type": "color"
            },
            "200": {
                "value": "#C5C6E7",
                "type": "color"
            },
            "300": {
                "value": "#9C9ED3",
                "type": "color"
            },
            "400": {
                "value": "#7679BC",
                "type": "color"
            },
            "500": {
                "value": "#55589F",
                "type": "color"
            },
            "600": {
                "value": "#47497B",
                "type": "color"
            },
            "700": {
                "value": "#363858",
                "type": "color"
            },
            "800": {
                "value": "#26273B",
                "type": "color"
            },
            "900": {
                "value": "#191924",
                "type": "color"
            }
        }
    }
}

Palettes built on #575BBB

Color Lab

Pairs with #575BBB

UI roles & guardrails

In real applications

Scales

Every model

Export