What color is #515EA0?

#515EA0 is a medium, muted blue-violet. In RGB it is rgb(81, 94, 160), and in HSL hsl(230, 33%, 47%).

Is #515EA0 accessible as text?

On white, #515EA0 has a contrast ratio of 6.07:1 (passes WCAG AA for body text); on black it is 3.46:1 (fails). For text placed on #515EA0, use white for the best readability.

What is the closest Tailwind color to #515EA0?

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

What colors go well with #515EA0?

#515EA0 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #9F9250. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #515EA0 below.

Is #515EA0 good for buttons?

#515EA0 works well for buttons and highlights, but use white text on #515EA0 — black text only reaches 3.46:1, below the 4.5:1 needed for normal-size labels.

Is #515EA0 the same as CSS slateblue?

No — #515EA0 is not the CSS named color slateblue, but slateblue (#6A5ACD) is the closest CSS named color.

#515EA0 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #515EA0

Not just a swatch — here's how #515EA0 works with other colors. Named schemes with #515EA0 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #515EA0 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 #515EA0 Surface #14161A Highlight #F4F6F8 Secondary #5B6672 Accent #7482C1

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 #515EA0 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 #515EA0 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 #515EA0 Secondary #858CA4 Support #9D8F88 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 #515EA0 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 27/100

Cool

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

Softness 42/100

Moderate

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 55/100

Moderate

Faded, nostalgic quality — editorial, heritage and retro work.

Luxury 57/100

Moderate

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

Brand distinctiveness 29/100

Low

Quiet and neutral — a supporting tone, not a signature.

UI accent fit 94/100

Very high

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

Surface fit 20/100

Low

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

Print safety 83/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #515EA0

For UI

For branding

For interior

For fashion

People also use #515EA0 with

Cadet Blue Royal Purple Moss Green 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 6.1:1. Use

Subtle surface Use #DEE0EA for cards and hover fills. Tint 80

Avoid beside #5D509F — 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 #515EA0 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: #515EA0;
  --color-base-rgb: 81 94 160;
  --color-base-oklch: oklch(50.2% 0.106 273.6);
  --color-50: #F5F6FA;
  --color-100: #E3E6F2;
  --color-200: #C9CDE4;
  --color-300: #A2A9CD;
  --color-400: #7E87B4;
  --color-500: #5D6797;
  --color-600: #4C5375;
  --color-700: #3A3F55;
  --color-800: #292B38;
  --color-900: #1A1C23;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  tanzanite: {
    50: '#F5F6FA',
    100: '#E3E6F2',
    200: '#C9CDE4',
    300: '#A2A9CD',
    400: '#7E87B4',
    500: '#5D6797',
    600: '#4C5375',
    700: '#3A3F55',
    800: '#292B38',
    900: '#1A1C23',
  },
}

$base: #515EA0;
$base-ink: #FFFFFF;
$base-50: #F5F6FA;
$base-100: #E3E6F2;
$base-200: #C9CDE4;
$base-300: #A2A9CD;
$base-400: #7E87B4;
$base-500: #5D6797;
$base-600: #4C5375;
$base-700: #3A3F55;
$base-800: #292B38;
$base-900: #1A1C23;
$base-hover: #404B80;
$base-subtle: #CCD0E1;

{
    "color": {
        "base": {
            "value": "#515EA0",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F5F6FA",
                "type": "color"
            },
            "100": {
                "value": "#E3E6F2",
                "type": "color"
            },
            "200": {
                "value": "#C9CDE4",
                "type": "color"
            },
            "300": {
                "value": "#A2A9CD",
                "type": "color"
            },
            "400": {
                "value": "#7E87B4",
                "type": "color"
            },
            "500": {
                "value": "#5D6797",
                "type": "color"
            },
            "600": {
                "value": "#4C5375",
                "type": "color"
            },
            "700": {
                "value": "#3A3F55",
                "type": "color"
            },
            "800": {
                "value": "#292B38",
                "type": "color"
            },
            "900": {
                "value": "#1A1C23",
                "type": "color"
            }
        }
    }
}

Palettes built on #515EA0

Color Lab

Pairs with #515EA0

UI roles & guardrails

In real applications

Scales

Every model

Export