What color is #3A58DF?

#3A58DF is a medium, vivid blue. In RGB it is rgb(58, 88, 223), and in HSL hsl(229, 72%, 55%).

Is #3A58DF accessible as text?

On white, #3A58DF has a contrast ratio of 5.77:1 (passes WCAG AA for body text); on black it is 3.64:1 (fails). For text placed on #3A58DF, use white for the best readability.

What is the closest Tailwind color to #3A58DF?

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

What colors go well with #3A58DF?

#3A58DF pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #DFC13A. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #3A58DF below.

Is #3A58DF good for buttons?

#3A58DF works well for buttons and highlights, but use white text on #3A58DF — black text only reaches 3.64:1, below the 4.5:1 needed for normal-size labels.

Is #3A58DF the same as CSS royalblue?

No — #3A58DF is not the CSS named color royalblue, but royalblue (#4169E1) is the closest CSS named color.

#3A58DF Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #3A58DF

Not just a swatch — here's how #3A58DF works with other colors. Named schemes with #3A58DF in its natural role, and a note on why the supporting colors balance it.

Tech Product Signal · 5 colors

Signal #3A58DF Surface #14161A Highlight #F4F6F8 Secondary #5B6672 Accent #5E82FD

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 #3A58DF 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 #3A58DF 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 #3A58DF Secondary #8092C0 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 #3A58DF Secondary #E86A74 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 #3A58DF 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 32/100

Low

Middle-weight — neither delicate nor heavy.

Depth 51/100

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 22/100

Low

Clean and current — no dusty, aged cast.

Luxury 49/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 80/100

Very high

Bold and ownable — memorable as a primary brand color.

UI accent fit 83/100

Very high

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

Surface fit 10/100

Very low

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

Print safety 64/100

High

Prints close, with a slight loss of vibrancy.

Pairs with #3A58DF

For UI

For branding

For interior

For fashion

People also use #3A58DF with

Lagoon Blue 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 5.8:1. Use

Subtle surface Use #DCE1F4 for cards and hover fills. Tint 80

Avoid beside #523ADF — 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 #3A58DF 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: #3A58DF;
  --color-base-rgb: 58 88 223;
  --color-base-oklch: oklch(52.3% 0.208 268.4);
  --color-50: #F1F4FD;
  --color-100: #DBE1FA;
  --color-200: #B9C4F3;
  --color-300: #899AE6;
  --color-400: #5D73D5;
  --color-500: #3B52BA;
  --color-600: #34458E;
  --color-700: #2A3564;
  --color-800: #1F2542;
  --color-900: #151828;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  royal-blue: {
    50: '#F1F4FD',
    100: '#DBE1FA',
    200: '#B9C4F3',
    300: '#899AE6',
    400: '#5D73D5',
    500: '#3B52BA',
    600: '#34458E',
    700: '#2A3564',
    800: '#1F2542',
    900: '#151828',
  },
}

$base: #3A58DF;
$base-ink: #FFFFFF;
$base-50: #F1F4FD;
$base-100: #DBE1FA;
$base-200: #B9C4F3;
$base-300: #899AE6;
$base-400: #5D73D5;
$base-500: #3B52BA;
$base-600: #34458E;
$base-700: #2A3564;
$base-800: #1F2542;
$base-900: #151828;
$base-hover: #1F3DC1;
$base-subtle: #CAD1EF;

{
    "color": {
        "base": {
            "value": "#3A58DF",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1F4FD",
                "type": "color"
            },
            "100": {
                "value": "#DBE1FA",
                "type": "color"
            },
            "200": {
                "value": "#B9C4F3",
                "type": "color"
            },
            "300": {
                "value": "#899AE6",
                "type": "color"
            },
            "400": {
                "value": "#5D73D5",
                "type": "color"
            },
            "500": {
                "value": "#3B52BA",
                "type": "color"
            },
            "600": {
                "value": "#34458E",
                "type": "color"
            },
            "700": {
                "value": "#2A3564",
                "type": "color"
            },
            "800": {
                "value": "#1F2542",
                "type": "color"
            },
            "900": {
                "value": "#151828",
                "type": "color"
            }
        }
    }
}