What color is #513DD2?

#513DD2 is a medium indigo. In RGB it is rgb(81, 61, 210), and in HSL hsl(248, 62%, 53%).

Is #513DD2 accessible as text?

On white, #513DD2 has a contrast ratio of 7.12:1 (passes WCAG AA for body text); on black it is 2.95:1 (fails). For text placed on #513DD2, use white for the best readability.

What is the closest Tailwind color to #513DD2?

The nearest Tailwind CSS token is indigo-700 (#432DD7).

What colors go well with #513DD2?

#513DD2 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #BED13D. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #513DD2 below.

Is #513DD2 good for buttons?

#513DD2 works well for buttons and highlights, but use white text on #513DD2 — black text only reaches 2.95:1, below the 4.5:1 needed for normal-size labels.

Is #513DD2 the same as CSS slateblue?

No — #513DD2 is not the CSS named color slateblue, but slateblue (#6A5ACD) is the closest CSS named color.

#513DD2 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #513DD2

Not just a swatch — here's how #513DD2 works with other colors. Named schemes with #513DD2 in its natural role, and a note on why the supporting colors balance it.

Tech Product Signal · 5 colors

Signal #513DD2 Surface #14161A Highlight #F4F6F8 Secondary #5B6672 Accent #706BF0

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

Berry & Cream Lead · 5 colors

Lead #513DD2 Surface #F5E5D8 Anchor #5B2142 Accent #E5C2C9 Secondary #322B2F

Cerulean 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 #513DD2 Secondary #7E82B4 Support #9D9088 Ink #18140F

Cerulean 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 Cerulean carrying the quiet middle.

Coastal Morning Lead · 5 colors

Lead #513DD2 Accent #A5C4C3 Surface #EAD5BF Secondary #9AA0A1 Anchor #22334A

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

Sunset Warmth Glow · 5 colors

Glow #513DD2 Secondary #E86A71 Accent #F5934D Anchor #583B57 Surface #F7E7D7

Cerulean 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 #513DD2 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 29/100

Low

Firm and assertive — carries weight and contrast.

Depth 56/100

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 19/100

Very low

Clean and current — no dusty, aged cast.

Luxury 51/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 84/100

Very high

Bold and ownable — memorable as a primary brand color.

UI accent fit 76/100

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 67/100

High

Prints close, with a slight loss of vibrancy.

Pairs with #513DD2

For UI

For branding

For interior

For fashion

People also use #513DD2 with

Cornflower Blue Dark Orchid Yellow Green Gainsboro Prussian Blue

UI roles & guardrails

Primary action Safe as a filled button with white label. AAA

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 7.1:1. Use

Subtle surface Use #DFDCF2 for cards and hover fills. Tint 80

Avoid beside #823DD1 — 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 #513DD2 at work across the surfaces designers actually ship.

Website / UI

Northwind Sign up

Build faster.

A working theme, generated in seconds.

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: #513DD2;
  --color-base-rgb: 81 61 210;
  --color-base-oklch: oklch(48.2% 0.216 280.6);
  --color-50: #F4F2FD;
  --color-100: #E1DDF8;
  --color-200: #C4BDEF;
  --color-300: #9A90E0;
  --color-400: #7366CC;
  --color-500: #5244B1;
  --color-600: #453A87;
  --color-700: #352E60;
  --color-800: #26223F;
  --color-900: #181627;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  cerulean: {
    50: '#F4F2FD',
    100: '#E1DDF8',
    200: '#C4BDEF',
    300: '#9A90E0',
    400: '#7366CC',
    500: '#5244B1',
    600: '#453A87',
    700: '#352E60',
    800: '#26223F',
    900: '#181627',
  },
}

$base: #513DD2;
$base-ink: #FFFFFF;
$base-50: #F4F2FD;
$base-100: #E1DDF8;
$base-200: #C4BDEF;
$base-300: #9A90E0;
$base-400: #7366CC;
$base-500: #5244B1;
$base-600: #453A87;
$base-700: #352E60;
$base-800: #26223F;
$base-900: #181627;
$base-hover: #3B29AF;
$base-subtle: #CFCAEC;

{
    "color": {
        "base": {
            "value": "#513DD2",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F4F2FD",
                "type": "color"
            },
            "100": {
                "value": "#E1DDF8",
                "type": "color"
            },
            "200": {
                "value": "#C4BDEF",
                "type": "color"
            },
            "300": {
                "value": "#9A90E0",
                "type": "color"
            },
            "400": {
                "value": "#7366CC",
                "type": "color"
            },
            "500": {
                "value": "#5244B1",
                "type": "color"
            },
            "600": {
                "value": "#453A87",
                "type": "color"
            },
            "700": {
                "value": "#352E60",
                "type": "color"
            },
            "800": {
                "value": "#26223F",
                "type": "color"
            },
            "900": {
                "value": "#181627",
                "type": "color"
            }
        }
    }
}

Palettes built on #513DD2

Color Lab

Pairs with #513DD2

UI roles & guardrails

In real applications

Scales

Every model

Export