What color is #5366AC?

#5366AC is a medium blue. In RGB it is rgb(83, 102, 172), and in HSL hsl(227, 35%, 50%).

Is #5366AC accessible as text?

On white, #5366AC has a contrast ratio of 5.43:1 (passes WCAG AA for body text); on black it is 3.86:1 (fails). For text placed on #5366AC, use white for the best readability.

What is the closest Tailwind color to #5366AC?

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

What colors go well with #5366AC?

#5366AC pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #AC9953. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #5366AC below.

Is #5366AC good for buttons?

#5366AC works well for buttons and highlights, but use white text on #5366AC — black text only reaches 3.86:1, below the 4.5:1 needed for normal-size labels.

Is #5366AC the same as CSS slateblue?

No — #5366AC is not the CSS named color slateblue, but slateblue (#6A5ACD) is the closest CSS named color.

#5366AC Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #5366AC

Not just a swatch — here's how #5366AC works with other colors. Named schemes with #5366AC in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #5366AC Accent #A5C4C2 Surface #EAD5C0 Secondary #9AA0A1 Anchor #21344A

Very Peri 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 #5366AC Surface #14161A Highlight #F4F6F8 Secondary #5B6672 Accent #778BCD

Very Peri is the vivid signal in this product UI — on a near-black surface with cool white, a slate grey and a lighter tint of Very Peri.

Vintage Leather Lead · 5 colors

Lead #5366AC Secondary #7F4535 Surface #EED7C2 Accent #365246 Anchor #582239

Very Peri 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 #5366AC Surface #F6E5D8 Anchor #5B2143 Accent #E5C2C9 Secondary #322B2F

Very Peri 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 #5366AC Secondary #8B94AE Support #9D8F88 Ink #18140F

Very Peri 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 Very Peri carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #5366AC 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 25/100

Cool

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

Softness 43/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 47/100

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 55/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 55/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 30/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 97/100

Very high

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

Surface fit 21/100

Low

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

Print safety 81/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #5366AC

For UI

For branding

For interior

For fashion

People also use #5366AC with

Cadet Grey Royal Purple Sage Green 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 5.4:1. Use

Subtle surface Use #DFE2EC for cards and hover fills. Tint 80

Avoid beside #5D53AC — 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 #5366AC 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: #5366AC;
  --color-base-rgb: 83 102 172;
  --color-base-oklch: oklch(52.8% 0.113 270.7);
  --color-50: #F4F6FA;
  --color-100: #E3E6F2;
  --color-200: #C8CEE4;
  --color-300: #A1ABCE;
  --color-400: #7C89B6;
  --color-500: #5C6999;
  --color-600: #4B5577;
  --color-700: #393F56;
  --color-800: #282C39;
  --color-900: #1A1C23;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  very-peri: {
    50: '#F4F6FA',
    100: '#E3E6F2',
    200: '#C8CEE4',
    300: '#A1ABCE',
    400: '#7C89B6',
    500: '#5C6999',
    600: '#4B5577',
    700: '#393F56',
    800: '#282C39',
    900: '#1A1C23',
  },
}

$base: #5366AC;
$base-ink: #FFFFFF;
$base-50: #F4F6FA;
$base-100: #E3E6F2;
$base-200: #C8CEE4;
$base-300: #A1ABCE;
$base-400: #7C89B6;
$base-500: #5C6999;
$base-600: #4B5577;
$base-700: #393F56;
$base-800: #282C39;
$base-900: #1A1C23;
$base-hover: #42528A;
$base-subtle: #CFD3E3;

{
    "color": {
        "base": {
            "value": "#5366AC",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F4F6FA",
                "type": "color"
            },
            "100": {
                "value": "#E3E6F2",
                "type": "color"
            },
            "200": {
                "value": "#C8CEE4",
                "type": "color"
            },
            "300": {
                "value": "#A1ABCE",
                "type": "color"
            },
            "400": {
                "value": "#7C89B6",
                "type": "color"
            },
            "500": {
                "value": "#5C6999",
                "type": "color"
            },
            "600": {
                "value": "#4B5577",
                "type": "color"
            },
            "700": {
                "value": "#393F56",
                "type": "color"
            },
            "800": {
                "value": "#282C39",
                "type": "color"
            },
            "900": {
                "value": "#1A1C23",
                "type": "color"
            }
        }
    }
}

Palettes built on #5366AC

Color Lab

Pairs with #5366AC

UI roles & guardrails

In real applications

Scales

Every model

Export