What color is #3D64F0?

#3D64F0 is a medium, vivid blue. In RGB it is rgb(61, 100, 240), and in HSL hsl(227, 86%, 59%).

Is #3D64F0 accessible as text?

On white, #3D64F0 has a contrast ratio of 4.91:1 (passes WCAG AA for body text); on black it is 4.28:1 (fails). For text placed on #3D64F0, use white for the best readability.

What is the closest Tailwind color to #3D64F0?

The nearest Tailwind CSS token is blue-600 (#155DFC).

What colors go well with #3D64F0?

#3D64F0 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #F0C93D. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #3D64F0 below.

Is #3D64F0 good for buttons?

#3D64F0 works well for buttons and highlights, but use white text on #3D64F0 — black text only reaches 4.28:1, below the 4.5:1 needed for normal-size labels.

Is #3D64F0 the same as CSS royalblue?

No — #3D64F0 is not the CSS named color royalblue, but royalblue (#4169E1) is the closest CSS named color.

#3D64F0 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #3D64F0

Not just a swatch — here's how #3D64F0 works with other colors. Named schemes with #3D64F0 in its natural role, and a note on why the supporting colors balance it.

Tech Product Signal · 5 colors

Signal #3D64F0 Surface #14161A Highlight #F4F6F8 Secondary #5B6672 Accent #638EFF

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

Coastal Morning Lead · 5 colors

Lead #3D64F0 Accent #A5C4C2 Surface #EAD5C0 Secondary #9AA0A1 Anchor #21344A

Royal Blue 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 #3D64F0 Surface #F6E5D8 Anchor #5B2143 Accent #E5C2CA Secondary #322B2F

Royal Blue 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 #3D64F0 Secondary #8A9ECE Support #9D8F88 Ink #18140F

Royal Blue 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 Royal Blue carrying the quiet middle.

Sunset Warmth Glow · 5 colors

Glow #3D64F0 Secondary #E86A74 Accent #F79250 Anchor #573B58 Surface #F7E7D7

Royal Blue 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 #3D64F0 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 10/100

Cool

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

Softness 34/100

Low

Middle-weight — neither delicate nor heavy.

Depth 48/100

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 20/100

Low

Clean and current — no dusty, aged cast.

Luxury 45/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 83/100

Very high

Bold and ownable — memorable as a primary brand color.

UI accent fit 79/100

High

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

Surface fit 13/100

Very low

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

Print safety 62/100

High

Prints close, with a slight loss of vibrancy.

Pairs with #3D64F0

For UI

For branding

For interior

For fashion

People also use #3D64F0 with

Bright Sky Blue Violet Saffron Gainsboro Gunmetal Gray

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 #DDE3F7 for cards and hover fills. Tint 80

Avoid beside #523DF0 — 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 #3D64F0 at work across the surfaces designers actually ship.

Website / UI

Northwind Sign up

Build faster.

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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: #3D64F0;
  --color-base-rgb: 61 100 240;
  --color-base-oklch: oklch(56.0% 0.215 267.1);
  --color-50: #F0F3FE;
  --color-100: #D8E0FD;
  --color-200: #B3C2F9;
  --color-300: #8098EF;
  --color-400: #5271E0;
  --color-500: #2F4FC6;
  --color-600: #2B4396;
  --color-700: #25346A;
  --color-800: #1C2545;
  --color-900: #13182A;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  royal-blue: {
    50: '#F0F3FE',
    100: '#D8E0FD',
    200: '#B3C2F9',
    300: '#8098EF',
    400: '#5271E0',
    500: '#2F4FC6',
    600: '#2B4396',
    700: '#25346A',
    800: '#1C2545',
    900: '#13182A',
  },
}

$base: #3D64F0;
$base-ink: #FFFFFF;
$base-50: #F0F3FE;
$base-100: #D8E0FD;
$base-200: #B3C2F9;
$base-300: #8098EF;
$base-400: #5271E0;
$base-500: #2F4FC6;
$base-600: #2B4396;
$base-700: #25346A;
$base-800: #1C2545;
$base-900: #13182A;
$base-hover: #113EE0;
$base-subtle: #CBD4F4;

{
    "color": {
        "base": {
            "value": "#3D64F0",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0F3FE",
                "type": "color"
            },
            "100": {
                "value": "#D8E0FD",
                "type": "color"
            },
            "200": {
                "value": "#B3C2F9",
                "type": "color"
            },
            "300": {
                "value": "#8098EF",
                "type": "color"
            },
            "400": {
                "value": "#5271E0",
                "type": "color"
            },
            "500": {
                "value": "#2F4FC6",
                "type": "color"
            },
            "600": {
                "value": "#2B4396",
                "type": "color"
            },
            "700": {
                "value": "#25346A",
                "type": "color"
            },
            "800": {
                "value": "#1C2545",
                "type": "color"
            },
            "900": {
                "value": "#13182A",
                "type": "color"
            }
        }
    }
}