What color is #425CEF?

#425CEF is a medium, vivid blue. In RGB it is rgb(66, 92, 239), and in HSL hsl(231, 84%, 60%).

Is #425CEF accessible as text?

On white, #425CEF has a contrast ratio of 5.24:1 (passes WCAG AA for body text); on black it is 4.01:1 (fails). For text placed on #425CEF, use white for the best readability.

What is the closest Tailwind color to #425CEF?

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

What colors go well with #425CEF?

#425CEF pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #EFD543. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #425CEF below.

Is #425CEF good for buttons?

#425CEF works well for buttons and highlights, but use white text on #425CEF — black text only reaches 4.01:1, below the 4.5:1 needed for normal-size labels.

Is #425CEF the same as CSS royalblue?

No — #425CEF is not the CSS named color royalblue, but royalblue (#4169E1) is the closest CSS named color.

#425CEF Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #425CEF

Not just a swatch — here's how #425CEF works with other colors. Named schemes with #425CEF in its natural role, and a note on why the supporting colors balance it.

Tech Product Signal · 5 colors

Signal #425CEF Surface #14161A Highlight #F4F6F8 Secondary #5B6672 Accent #6687FF

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 #425CEF 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 #425CEF Surface #F6E5D8 Anchor #5B2143 Accent #E5C2C9 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 #425CEF Secondary #8799CB 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 #425CEF Secondary #E86A73 Accent #F69250 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 #425CEF 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 12/100

Cool

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

Softness 32/100

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 18/100

Very low

Clean and current — no dusty, aged cast.

Luxury 46/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 85/100

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 12/100

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 #425CEF

For UI

For branding

For interior

For fashion

People also use #425CEF with

Bright Sky 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 5.2:1. Use

Subtle surface Use #DEE2F7 for cards and hover fills. Tint 80

Avoid beside #6343EF — 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 #425CEF 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: #425CEF;
  --color-base-rgb: 66 92 239;
  --color-base-oklch: oklch(54.7% 0.221 269.7);
  --color-50: #F0F2FE;
  --color-100: #D8DEFD;
  --color-200: #B4BEF8;
  --color-300: #8192EE;
  --color-400: #5368DF;
  --color-500: #3047C4;
  --color-600: #2D3C95;
  --color-700: #253069;
  --color-800: #1C2245;
  --color-900: #13172A;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  royal-blue: {
    50: '#F0F2FE',
    100: '#D8DEFD',
    200: '#B4BEF8',
    300: '#8192EE',
    400: '#5368DF',
    500: '#3047C4',
    600: '#2D3C95',
    700: '#253069',
    800: '#1C2245',
    900: '#13172A',
  },
}

$base: #425CEF;
$base-ink: #FFFFFF;
$base-50: #F0F2FE;
$base-100: #D8DEFD;
$base-200: #B4BEF8;
$base-300: #8192EE;
$base-400: #5368DF;
$base-500: #3047C4;
$base-600: #2D3C95;
$base-700: #253069;
$base-800: #1C2245;
$base-900: #13172A;
$base-hover: #1432E1;
$base-subtle: #CDD3F4;

{
    "color": {
        "base": {
            "value": "#425CEF",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0F2FE",
                "type": "color"
            },
            "100": {
                "value": "#D8DEFD",
                "type": "color"
            },
            "200": {
                "value": "#B4BEF8",
                "type": "color"
            },
            "300": {
                "value": "#8192EE",
                "type": "color"
            },
            "400": {
                "value": "#5368DF",
                "type": "color"
            },
            "500": {
                "value": "#3047C4",
                "type": "color"
            },
            "600": {
                "value": "#2D3C95",
                "type": "color"
            },
            "700": {
                "value": "#253069",
                "type": "color"
            },
            "800": {
                "value": "#1C2245",
                "type": "color"
            },
            "900": {
                "value": "#13172A",
                "type": "color"
            }
        }
    }
}

Palettes built on #425CEF

Color Lab

Pairs with #425CEF

UI roles & guardrails

In real applications

Scales

Every model

Export