What color is #505DBD?

#505DBD is a medium blue-violet. In RGB it is rgb(80, 93, 189), and in HSL hsl(233, 45%, 53%).

Is #505DBD accessible as text?

On white, #505DBD has a contrast ratio of 5.77:1 (passes WCAG AA for body text); on black it is 3.64:1 (fails). For text placed on #505DBD, use white for the best readability.

What is the closest Tailwind color to #505DBD?

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

What colors go well with #505DBD?

#505DBD pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #BDB051. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #505DBD below.

Is #505DBD good for buttons?

#505DBD works well for buttons and highlights, but use white text on #505DBD — black text only reaches 3.64:1, below the 4.5:1 needed for normal-size labels.

Is #505DBD the same as CSS slateblue?

No — #505DBD is not the CSS named color slateblue, but slateblue (#6A5ACD) is the closest CSS named color.

#505DBD Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #505DBD

Not just a swatch — here's how #505DBD works with other colors. Named schemes with #505DBD in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #505DBD Accent #A5C4C2 Surface #EAD5C0 Secondary #9AA0A1 Anchor #21344A

Tanzanite 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 #505DBD Surface #14161A Highlight #F4F6F8 Secondary #5B6672 Accent #7383DD

Tanzanite is the vivid signal in this product UI — on a near-black surface with cool white, a slate grey and a lighter tint of Tanzanite.

Vintage Leather Lead · 5 colors

Lead #505DBD Secondary #7F4535 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.

Berry & Cream Lead · 5 colors

Lead #505DBD Surface #F6E5D8 Anchor #5B2143 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 #505DBD Secondary #8790B2 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 #505DBD 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 18/100

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 42/100

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 99/100

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 76/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #505DBD

For UI

For branding

For interior

For fashion

People also use #505DBD with

Iceberg Royal Purple 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 #DFE1EF for cards and hover fills. Tint 80

Avoid beside #6951BD — 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 #505DBD 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: #505DBD;
  --color-base-rgb: 80 93 189;
  --color-base-oklch: oklch(51.8% 0.150 274.2);
  --color-50: #F4F4FB;
  --color-100: #E1E3F4;
  --color-200: #C4C8E8;
  --color-300: #9BA1D5;
  --color-400: #747CBE;
  --color-500: #535CA2;
  --color-600: #454B7D;
  --color-700: #35395A;
  --color-800: #26283B;
  --color-900: #191A25;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  tanzanite: {
    50: '#F4F4FB',
    100: '#E1E3F4',
    200: '#C4C8E8',
    300: '#9BA1D5',
    400: '#747CBE',
    500: '#535CA2',
    600: '#454B7D',
    700: '#35395A',
    800: '#26283B',
    900: '#191A25',
  },
}

$base: #505DBD;
$base-ink: #FFFFFF;
$base-50: #F4F4FB;
$base-100: #E1E3F4;
$base-200: #C4C8E8;
$base-300: #9BA1D5;
$base-400: #747CBE;
$base-500: #535CA2;
$base-600: #454B7D;
$base-700: #35395A;
$base-800: #26283B;
$base-900: #191A25;
$base-hover: #3B479D;
$base-subtle: #CFD2E7;

{
    "color": {
        "base": {
            "value": "#505DBD",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F4F4FB",
                "type": "color"
            },
            "100": {
                "value": "#E1E3F4",
                "type": "color"
            },
            "200": {
                "value": "#C4C8E8",
                "type": "color"
            },
            "300": {
                "value": "#9BA1D5",
                "type": "color"
            },
            "400": {
                "value": "#747CBE",
                "type": "color"
            },
            "500": {
                "value": "#535CA2",
                "type": "color"
            },
            "600": {
                "value": "#454B7D",
                "type": "color"
            },
            "700": {
                "value": "#35395A",
                "type": "color"
            },
            "800": {
                "value": "#26283B",
                "type": "color"
            },
            "900": {
                "value": "#191A25",
                "type": "color"
            }
        }
    }
}

Palettes built on #505DBD

Color Lab

Pairs with #505DBD

UI roles & guardrails

In real applications

Scales

Every model

Export