What color is #355AFD?

#355AFD is a medium, vivid blue. In RGB it is rgb(53, 90, 253), and in HSL hsl(229, 98%, 60%).

Is #355AFD accessible as text?

On white, #355AFD has a contrast ratio of 5.21:1 (passes WCAG AA for body text); on black it is 4.03:1 (fails). For text placed on #355AFD, use white for the best readability.

What is the closest Tailwind color to #355AFD?

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

What colors go well with #355AFD?

#355AFD pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #FDD835. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #355AFD below.

Is #355AFD good for buttons?

#355AFD works well for buttons and highlights, but use white text on #355AFD — black text only reaches 4.03:1, below the 4.5:1 needed for normal-size labels.

Is #355AFD the same as CSS royalblue?

No — #355AFD is not the CSS named color royalblue, but royalblue (#4169E1) is the closest CSS named color.

#355AFD Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #355AFD

Not just a swatch — here's how #355AFD works with other colors. Named schemes with #355AFD in its natural role, and a note on why the supporting colors balance it.

Tech Product Signal · 5 colors

Signal #355AFD Surface #14161A Highlight #F4F6F8 Secondary #5B6672 Accent #5A87FF

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 #355AFD 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 #355AFD 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 #355AFD Secondary #849AD1 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 #355AFD 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 #355AFD 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 30/100

Low

Firm and assertive — carries weight and contrast.

Depth 50/100

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 10/100

Very low

Clean and current — no dusty, aged cast.

Luxury 44/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 94/100

Very high

Bold and ownable — memorable as a primary brand color.

UI accent fit 64/100

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 57/100

Moderate

Prints close, with a slight loss of vibrancy.

Pairs with #355AFD

For UI

For branding

For interior

For fashion

People also use #355AFD with

Bright Sky 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 5.2:1. Use

Subtle surface Use #DCE1F9 for cards and hover fills. Tint 80

Avoid beside #5335FD — 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 #355AFD 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: #355AFD;
  --color-base-rgb: 53 90 253;
  --color-base-oklch: oklch(55.1% 0.244 267.3);
  --color-50: #F0F3FE;
  --color-100: #D8DFFD;
  --color-200: #B1BEFC;
  --color-300: #7890F7;
  --color-400: #4866EA;
  --color-500: #2444D1;
  --color-600: #243A9E;
  --color-700: #202E6F;
  --color-800: #192248;
  --color-900: #11162C;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  neon-blue: {
    50: '#F0F3FE',
    100: '#D8DFFD',
    200: '#B1BEFC',
    300: '#7890F7',
    400: '#4866EA',
    500: '#2444D1',
    600: '#243A9E',
    700: '#202E6F',
    800: '#192248',
    900: '#11162C',
  },
}

$base: #355AFD;
$base-ink: #FFFFFF;
$base-50: #F0F3FE;
$base-100: #D8DFFD;
$base-200: #B1BEFC;
$base-300: #7890F7;
$base-400: #4866EA;
$base-500: #2444D1;
$base-600: #243A9E;
$base-700: #202E6F;
$base-800: #192248;
$base-900: #11162C;
$base-hover: #022EF2;
$base-subtle: #CAD2F7;

{
    "color": {
        "base": {
            "value": "#355AFD",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0F3FE",
                "type": "color"
            },
            "100": {
                "value": "#D8DFFD",
                "type": "color"
            },
            "200": {
                "value": "#B1BEFC",
                "type": "color"
            },
            "300": {
                "value": "#7890F7",
                "type": "color"
            },
            "400": {
                "value": "#4866EA",
                "type": "color"
            },
            "500": {
                "value": "#2444D1",
                "type": "color"
            },
            "600": {
                "value": "#243A9E",
                "type": "color"
            },
            "700": {
                "value": "#202E6F",
                "type": "color"
            },
            "800": {
                "value": "#192248",
                "type": "color"
            },
            "900": {
                "value": "#11162C",
                "type": "color"
            }
        }
    }
}

Palettes built on #355AFD

Color Lab

Pairs with #355AFD

UI roles & guardrails

In real applications

Scales

Every model

Export