What color is #4F63CA?

#4F63CA is a medium blue. In RGB it is rgb(79, 99, 202), and in HSL hsl(230, 54%, 55%).

Is #4F63CA accessible as text?

On white, #4F63CA has a contrast ratio of 5.29:1 (passes WCAG AA for body text); on black it is 3.97:1 (fails). For text placed on #4F63CA, use white for the best readability.

What is the closest Tailwind color to #4F63CA?

The nearest Tailwind CSS token is sky-700 (#0069A8).

What colors go well with #4F63CA?

#4F63CA pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #CAB64E. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #4F63CA below.

Is #4F63CA good for buttons?

#4F63CA works well for buttons and highlights, but use white text on #4F63CA — black text only reaches 3.97:1, below the 4.5:1 needed for normal-size labels.

Is #4F63CA the same as CSS royalblue?

No — #4F63CA is not the CSS named color royalblue, but royalblue (#4169E1) is the closest CSS named color.

#4F63CA Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #4F63CA

Not just a swatch — here's how #4F63CA works with other colors. Named schemes with #4F63CA in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #4F63CA 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.

Tech Product Signal · 5 colors

Signal #4F63CA Surface #14161A Highlight #F4F6F8 Secondary #5B6672 Accent #738AEA

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.

Vintage Leather Lead · 5 colors

Lead #4F63CA Secondary #7F4535 Surface #EED7C2 Accent #365247 Anchor #582239

Royal Blue plays the worn-leather lead, deepened by saddle brown and an oxblood anchor, softened by aged cream and cooled by a muted forest green.

Berry & Cream Lead · 5 colors

Lead #4F63CA 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 #4F63CA Secondary #8B96BB 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.

Build a working theme in the generator →

Color Lab

How #4F63CA 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 14/100

Cool

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

Softness 39/100

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 39/100

Low

A faint retro warmth without tipping into sepia.

Luxury 51/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 43/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 98/100

Very high

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

Surface fit 11/100

Very low

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

Print safety 73/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #4F63CA

For UI

For branding

For interior

For fashion

People also use #4F63CA with

Lagoon Blue Slate Blue Dark Khaki 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 5.3:1. Use

Subtle surface Use #DFE2F1 for cards and hover fills. Tint 80

Avoid beside #634ECA — 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 #4F63CA 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: #4F63CA;
  --color-base-rgb: 79 99 202;
  --color-base-oklch: oklch(53.9% 0.160 271.7);
  --color-50: #F3F4FC;
  --color-100: #DFE3F6;
  --color-200: #C0C8EC;
  --color-300: #95A0DA;
  --color-400: #6C7BC6;
  --color-500: #4B5BAA;
  --color-600: #3F4A83;
  --color-700: #32395D;
  --color-800: #23283D;
  --color-900: #171A26;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  royal-blue: {
    50: '#F3F4FC',
    100: '#DFE3F6',
    200: '#C0C8EC',
    300: '#95A0DA',
    400: '#6C7BC6',
    500: '#4B5BAA',
    600: '#3F4A83',
    700: '#32395D',
    800: '#23283D',
    900: '#171A26',
  },
}

$base: #4F63CA;
$base-ink: #FFFFFF;
$base-50: #F3F4FC;
$base-100: #DFE3F6;
$base-200: #C0C8EC;
$base-300: #95A0DA;
$base-400: #6C7BC6;
$base-500: #4B5BAA;
$base-600: #3F4A83;
$base-700: #32395D;
$base-800: #23283D;
$base-900: #171A26;
$base-hover: #3448AD;
$base-subtle: #CED3EB;

{
    "color": {
        "base": {
            "value": "#4F63CA",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3F4FC",
                "type": "color"
            },
            "100": {
                "value": "#DFE3F6",
                "type": "color"
            },
            "200": {
                "value": "#C0C8EC",
                "type": "color"
            },
            "300": {
                "value": "#95A0DA",
                "type": "color"
            },
            "400": {
                "value": "#6C7BC6",
                "type": "color"
            },
            "500": {
                "value": "#4B5BAA",
                "type": "color"
            },
            "600": {
                "value": "#3F4A83",
                "type": "color"
            },
            "700": {
                "value": "#32395D",
                "type": "color"
            },
            "800": {
                "value": "#23283D",
                "type": "color"
            },
            "900": {
                "value": "#171A26",
                "type": "color"
            }
        }
    }
}

Palettes built on #4F63CA

Color Lab

Pairs with #4F63CA

UI roles & guardrails

In real applications

Scales

Every model

Export