What color is #515DC2?

#515DC2 is a medium blue-violet. In RGB it is rgb(81, 93, 194), and in HSL hsl(234, 48%, 54%).

Is #515DC2 accessible as text?

On white, #515DC2 has a contrast ratio of 5.68:1 (passes WCAG AA for body text); on black it is 3.69:1 (fails). For text placed on #515DC2, use white for the best readability.

What is the closest Tailwind color to #515DC2?

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

What colors go well with #515DC2?

#515DC2 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #C2B751. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #515DC2 below.

Is #515DC2 good for buttons?

#515DC2 works well for buttons and highlights, but use white text on #515DC2 — black text only reaches 3.69:1, below the 4.5:1 needed for normal-size labels.

Is #515DC2 the same as CSS slateblue?

No — #515DC2 is not the CSS named color slateblue, but slateblue (#6A5ACD) is the closest CSS named color.

#515DC2 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #515DC2

Not just a swatch — here's how #515DC2 works with other colors. Named schemes with #515DC2 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #515DC2 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 #515DC2 Surface #14161A Highlight #F4F6F8 Secondary #5B6672 Accent #7484E2

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 #515DC2 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 #515DC2 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 #515DC2 Secondary #8891B5 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 #515DC2 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 17/100

Cool

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

Softness 38/100

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 40/100

Low

A faint retro warmth without tipping into sepia.

Luxury 52/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 42/100

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 10/100

Very low

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

Print safety 75/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #515DC2

For UI

For branding

For interior

For fashion

People also use #515DC2 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 5.7:1. Use

Subtle surface Use #DFE1F0 for cards and hover fills. Tint 80

Avoid beside #6C51C2 — 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 #515DC2 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: #515DC2;
  --color-base-rgb: 81 93 194;
  --color-base-oklch: oklch(52.3% 0.157 274.5);
  --color-50: #F3F4FB;
  --color-100: #E0E2F5;
  --color-200: #C3C7EA;
  --color-300: #999FD7;
  --color-400: #7179C1;
  --color-500: #5059A5;
  --color-600: #43497F;
  --color-700: #34385B;
  --color-800: #25273C;
  --color-900: #181925;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  tanzanite: {
    50: '#F3F4FB',
    100: '#E0E2F5',
    200: '#C3C7EA',
    300: '#999FD7',
    400: '#7179C1',
    500: '#5059A5',
    600: '#43497F',
    700: '#34385B',
    800: '#25273C',
    900: '#181925',
  },
}

$base: #515DC2;
$base-ink: #FFFFFF;
$base-50: #F3F4FB;
$base-100: #E0E2F5;
$base-200: #C3C7EA;
$base-300: #999FD7;
$base-400: #7179C1;
$base-500: #5059A5;
$base-600: #43497F;
$base-700: #34385B;
$base-800: #25273C;
$base-900: #181925;
$base-hover: #3944A3;
$base-subtle: #CFD2E9;

{
    "color": {
        "base": {
            "value": "#515DC2",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3F4FB",
                "type": "color"
            },
            "100": {
                "value": "#E0E2F5",
                "type": "color"
            },
            "200": {
                "value": "#C3C7EA",
                "type": "color"
            },
            "300": {
                "value": "#999FD7",
                "type": "color"
            },
            "400": {
                "value": "#7179C1",
                "type": "color"
            },
            "500": {
                "value": "#5059A5",
                "type": "color"
            },
            "600": {
                "value": "#43497F",
                "type": "color"
            },
            "700": {
                "value": "#34385B",
                "type": "color"
            },
            "800": {
                "value": "#25273C",
                "type": "color"
            },
            "900": {
                "value": "#181925",
                "type": "color"
            }
        }
    }
}

Palettes built on #515DC2

Color Lab

Pairs with #515DC2

UI roles & guardrails

In real applications

Scales

Every model

Export