What color is #515CD5?

#515CD5 is a medium blue-violet. In RGB it is rgb(81, 92, 213), and in HSL hsl(235, 61%, 58%).

Is #515CD5 accessible as text?

On white, #515CD5 has a contrast ratio of 5.47:1 (passes WCAG AA for body text); on black it is 3.84:1 (fails). For text placed on #515CD5, use white for the best readability.

What is the closest Tailwind color to #515CD5?

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

What colors go well with #515CD5?

#515CD5 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #D5CA53. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #515CD5 below.

Is #515CD5 good for buttons?

#515CD5 works well for buttons and highlights, but use white text on #515CD5 — black text only reaches 3.84:1, below the 4.5:1 needed for normal-size labels.

Is #515CD5 the same as CSS royalblue?

No — #515CD5 is not the CSS named color royalblue, but royalblue (#4169E1) is the closest CSS named color.

#515CD5 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #515CD5

Not just a swatch — here's how #515CD5 works with other colors. Named schemes with #515CD5 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #515CD5 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.

Tech Product Signal · 5 colors

Signal #515CD5 Surface #14161A Highlight #F4F6F8 Secondary #5B6672 Accent #7485F4

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.

Vintage Leather Lead · 5 colors

Lead #515CD5 Secondary #7F4535 Surface #EED7C2 Accent #365247 Anchor #582239

Iris 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 #515CD5 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 #515CD5 Secondary #8A94BF Support #9D9088 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.

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Color Lab

How #515CD5 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 14/100

Cool

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

Softness 36/100

Low

Middle-weight — neither delicate nor heavy.

Depth 49/100

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 31/100

Low

A faint retro warmth without tipping into sepia.

Luxury 49/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 50/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 93/100

Very high

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

Surface fit 11/100

Very low

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

Print safety 70/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #515CD5

For UI

For branding

For interior

For fashion

People also use #515CD5 with

Maya Blue Amethyst Citrine 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 5.5:1. Use

Subtle surface Use #E0E2F3 for cards and hover fills. Tint 80

Avoid beside #7353D5 — 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 #515CD5 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: #515CD5;
  --color-base-rgb: 81 92 213;
  --color-base-oklch: oklch(53.5% 0.184 274.4);
  --color-50: #F2F3FC;
  --color-100: #DDE0F8;
  --color-200: #BDC2EF;
  --color-300: #9097DF;
  --color-400: #676FCB;
  --color-500: #454EB0;
  --color-600: #3B4187;
  --color-700: #2F3360;
  --color-800: #22243F;
  --color-900: #161827;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  iris: {
    50: '#F2F3FC',
    100: '#DDE0F8',
    200: '#BDC2EF',
    300: '#9097DF',
    400: '#676FCB',
    500: '#454EB0',
    600: '#3B4187',
    700: '#2F3360',
    800: '#22243F',
    900: '#161827',
  },
}

$base: #515CD5;
$base-ink: #FFFFFF;
$base-50: #F2F3FC;
$base-100: #DDE0F8;
$base-200: #BDC2EF;
$base-300: #9097DF;
$base-400: #676FCB;
$base-500: #454EB0;
$base-600: #3B4187;
$base-700: #2F3360;
$base-800: #22243F;
$base-900: #161827;
$base-hover: #2E3ABE;
$base-subtle: #D0D2EE;

{
    "color": {
        "base": {
            "value": "#515CD5",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F2F3FC",
                "type": "color"
            },
            "100": {
                "value": "#DDE0F8",
                "type": "color"
            },
            "200": {
                "value": "#BDC2EF",
                "type": "color"
            },
            "300": {
                "value": "#9097DF",
                "type": "color"
            },
            "400": {
                "value": "#676FCB",
                "type": "color"
            },
            "500": {
                "value": "#454EB0",
                "type": "color"
            },
            "600": {
                "value": "#3B4187",
                "type": "color"
            },
            "700": {
                "value": "#2F3360",
                "type": "color"
            },
            "800": {
                "value": "#22243F",
                "type": "color"
            },
            "900": {
                "value": "#161827",
                "type": "color"
            }
        }
    }
}

Palettes built on #515CD5

Color Lab

Pairs with #515CD5

UI roles & guardrails

In real applications

Scales

Every model

Export