What color is #304EE2?

#304EE2 is a medium, vivid blue. In RGB it is rgb(48, 78, 226), and in HSL hsl(230, 75%, 54%).

Is #304EE2 accessible as text?

On white, #304EE2 has a contrast ratio of 6.34:1 (passes WCAG AA for body text); on black it is 3.31:1 (fails). For text placed on #304EE2, use white for the best readability.

What is the closest Tailwind color to #304EE2?

The nearest Tailwind CSS token is blue-700 (#1447E6).

What colors go well with #304EE2?

#304EE2 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #E2C432. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #304EE2 below.

Is #304EE2 good for buttons?

#304EE2 works well for buttons and highlights, but use white text on #304EE2 — black text only reaches 3.31:1, below the 4.5:1 needed for normal-size labels.

Is #304EE2 the same as CSS royalblue?

No — #304EE2 is not the CSS named color royalblue, but royalblue (#4169E1) is the closest CSS named color.

#304EE2 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #304EE2

Not just a swatch — here's how #304EE2 works with other colors. Named schemes with #304EE2 in its natural role, and a note on why the supporting colors balance it.

Tech Product Signal · 5 colors

Signal #304EE2 Surface #14161A Highlight #F4F6F8 Secondary #5B6672 Accent #537AFF

Neon 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 Neon Blue.

Coastal Morning Lead · 5 colors

Lead #304EE2 Accent #A5C4C2 Surface #EAD5C0 Secondary #9AA0A1 Anchor #21344A

Neon 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 #304EE2 Surface #F6E5D8 Anchor #5B2143 Accent #E5C2CA Secondary #322B2F

Neon 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 #304EE2 Secondary #788CBE Support #9D8F88 Ink #18140F

Neon 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 Neon Blue carrying the quiet middle.

Sunset Warmth Glow · 5 colors

Glow #304EE2 Secondary #E86A74 Accent #F79250 Anchor #573B58 Surface #F7E7D7

Neon 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 #304EE2 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 11/100

Cool

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

Softness 29/100

Low

Firm and assertive — carries weight and contrast.

Depth 54/100

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 16/100

Very low

Clean and current — no dusty, aged cast.

Luxury 49/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 87/100

Very high

Bold and ownable — memorable as a primary brand color.

UI accent fit 74/100

High

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

Surface fit 8/100

Very low

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

Print safety 60/100

High

Prints close, with a slight loss of vibrancy.

Pairs with #304EE2

For UI

For branding

For interior

For fashion

People also use #304EE2 with

Lagoon Blue Blue Violet Saffron 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 6.3:1. Use

Subtle surface Use #DBDFF4 for cards and hover fills. Tint 80

Avoid beside #4F32E2 — 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 #304EE2 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: #304EE2;
  --color-base-rgb: 48 78 226;
  --color-base-oklch: oklch(50.4% 0.225 267.8);
  --color-50: #F1F3FE;
  --color-100: #DAE0FB;
  --color-200: #B8C2F5;
  --color-300: #8797E8;
  --color-400: #5B70D7;
  --color-500: #384EBC;
  --color-600: #324290;
  --color-700: #293366;
  --color-800: #1E2442;
  --color-900: #141829;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  neon-blue: {
    50: '#F1F3FE',
    100: '#DAE0FB',
    200: '#B8C2F5',
    300: '#8797E8',
    400: '#5B70D7',
    500: '#384EBC',
    600: '#324290',
    700: '#293366',
    800: '#1E2442',
    900: '#141829',
  },
}

$base: #304EE2;
$base-ink: #FFFFFF;
$base-50: #F1F3FE;
$base-100: #DAE0FB;
$base-200: #B8C2F5;
$base-300: #8797E8;
$base-400: #5B70D7;
$base-500: #384EBC;
$base-600: #324290;
$base-700: #293366;
$base-800: #1E2442;
$base-900: #141829;
$base-hover: #1C37C1;
$base-subtle: #C8CEF0;

{
    "color": {
        "base": {
            "value": "#304EE2",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1F3FE",
                "type": "color"
            },
            "100": {
                "value": "#DAE0FB",
                "type": "color"
            },
            "200": {
                "value": "#B8C2F5",
                "type": "color"
            },
            "300": {
                "value": "#8797E8",
                "type": "color"
            },
            "400": {
                "value": "#5B70D7",
                "type": "color"
            },
            "500": {
                "value": "#384EBC",
                "type": "color"
            },
            "600": {
                "value": "#324290",
                "type": "color"
            },
            "700": {
                "value": "#293366",
                "type": "color"
            },
            "800": {
                "value": "#1E2442",
                "type": "color"
            },
            "900": {
                "value": "#141829",
                "type": "color"
            }
        }
    }
}

Palettes built on #304EE2

Color Lab

Pairs with #304EE2

UI roles & guardrails

In real applications

Scales

Every model

Export