What color is #515FF5?

#515FF5 is a light, vivid blue-violet. In RGB it is rgb(81, 95, 245), and in HSL hsl(235, 89%, 64%).

Is #515FF5 accessible as text?

On white, #515FF5 has a contrast ratio of 4.88:1 (passes WCAG AA for body text); on black it is 4.31:1 (fails). For text placed on #515FF5, use white for the best readability.

What is the closest Tailwind color to #515FF5?

The nearest Tailwind CSS token is indigo-500 (#615FFF).

What colors go well with #515FF5?

#515FF5 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #F5E751. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #515FF5 below.

Is #515FF5 good for buttons?

#515FF5 works well for buttons and highlights, but use white text on #515FF5 — black text only reaches 4.31:1, below the 4.5:1 needed for normal-size labels.

Is #515FF5 the same as CSS royalblue?

No — #515FF5 is not the CSS named color royalblue, but royalblue (#4169E1) is the closest CSS named color.

#515FF5 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #515FF5

Not just a swatch — here's how #515FF5 works with other colors. Named schemes with #515FF5 in its natural role, and a note on why the supporting colors balance it.

Tech Product Signal · 5 colors

Signal #515FF5 Surface #14161A Highlight #F4F6F8 Secondary #5B6672 Accent #748AFF

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

Coastal Morning Lead · 5 colors

Lead #515FF5 Accent #A5C4C2 Surface #EAD5C0 Secondary #9AA0A1 Anchor #21344A

Iris opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.

Berry & Cream Lead · 5 colors

Lead #515FF5 Surface #F6E5D8 Anchor #5B2143 Accent #E5C2C9 Secondary #322B2F

Iris 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 #515FF5 Secondary #909DD1 Support #9D8F88 Ink #18140F

Iris 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 Iris carrying the quiet middle.

Sunset Warmth Glow · 5 colors

Glow #515FF5 Secondary #E86A73 Accent #F6924F Anchor #573B58 Surface #F7E7D7

Iris glows at the center of this sunset palette, joined by coral and gold, deepened by a plum anchor and cooled with cream.

Build a working theme in the generator →

Color Lab

How #515FF5 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 13/100

Cool

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

Softness 33/100

Low

Middle-weight — neither delicate nor heavy.

Depth 47/100

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 18/100

Very low

Clean and current — no dusty, aged cast.

Luxury 44/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 86/100

Very high

Bold and ownable — memorable as a primary brand color.

UI accent fit 75/100

High

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

Surface fit 14/100

Very low

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

Print safety 63/100

High

Prints close, with a slight loss of vibrancy.

Pairs with #515FF5

For UI

For branding

For interior

For fashion

People also use #515FF5 with

Light Sky Blue Medium Slate Blue Naples Yellow 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 4.9:1. Use

Subtle surface Use #E1E3F8 for cards and hover fills. Tint 80

Avoid beside #7A51F5 — 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 #515FF5 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: #515FF5;
  --color-base-rgb: 81 95 245;
  --color-base-oklch: oklch(56.5% 0.222 272.9);
  --color-50: #F0F1FE;
  --color-100: #D8DBFD;
  --color-200: #B2B8FA;
  --color-300: #7E88F1;
  --color-400: #4F5CE3;
  --color-500: #2C39C9;
  --color-600: #2A3398;
  --color-700: #23296B;
  --color-800: #1B1F46;
  --color-900: #13152B;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  iris: {
    50: '#F0F1FE',
    100: '#D8DBFD',
    200: '#B2B8FA',
    300: '#7E88F1',
    400: '#4F5CE3',
    500: '#2C39C9',
    600: '#2A3398',
    700: '#23296B',
    800: '#1B1F46',
    900: '#13152B',
  },
}

$base: #515FF5;
$base-ink: #FFFFFF;
$base-50: #F0F1FE;
$base-100: #D8DBFD;
$base-200: #B2B8FA;
$base-300: #7E88F1;
$base-400: #4F5CE3;
$base-500: #2C39C9;
$base-600: #2A3398;
$base-700: #23296B;
$base-800: #1B1F46;
$base-900: #13152B;
$base-hover: #1426F1;
$base-subtle: #D1D4F6;

{
    "color": {
        "base": {
            "value": "#515FF5",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0F1FE",
                "type": "color"
            },
            "100": {
                "value": "#D8DBFD",
                "type": "color"
            },
            "200": {
                "value": "#B2B8FA",
                "type": "color"
            },
            "300": {
                "value": "#7E88F1",
                "type": "color"
            },
            "400": {
                "value": "#4F5CE3",
                "type": "color"
            },
            "500": {
                "value": "#2C39C9",
                "type": "color"
            },
            "600": {
                "value": "#2A3398",
                "type": "color"
            },
            "700": {
                "value": "#23296B",
                "type": "color"
            },
            "800": {
                "value": "#1B1F46",
                "type": "color"
            },
            "900": {
                "value": "#13152B",
                "type": "color"
            }
        }
    }
}

Palettes built on #515FF5

Color Lab

Pairs with #515FF5

UI roles & guardrails

In real applications

Scales

Every model

Export