What color is #4E50B3?

#4E50B3 is a medium blue-violet. In RGB it is rgb(78, 80, 179), and in HSL hsl(239, 40%, 50%).

Is #4E50B3 accessible as text?

On white, #4E50B3 has a contrast ratio of 6.73:1 (passes WCAG AA for body text); on black it is 3.12:1 (fails). For text placed on #4E50B3, use white for the best readability.

What is the closest Tailwind color to #4E50B3?

The nearest Tailwind CSS token is blue-800 (#193CB8).

What colors go well with #4E50B3?

#4E50B3 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #B3B14D. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #4E50B3 below.

Is #4E50B3 good for buttons?

#4E50B3 works well for buttons and highlights, but use white text on #4E50B3 — black text only reaches 3.12:1, below the 4.5:1 needed for normal-size labels.

Is #4E50B3 the same as CSS slateblue?

No — #4E50B3 is not the CSS named color slateblue, but slateblue (#6A5ACD) is the closest CSS named color.

#4E50B3 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #4E50B3

Not just a swatch — here's how #4E50B3 works with other colors. Named schemes with #4E50B3 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #4E50B3 Accent #A5C4C2 Surface #EAD5BF Secondary #9AA0A1 Anchor #22344A

Cerulean opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.

Vintage Leather Lead · 5 colors

Lead #4E50B3 Secondary #7F4534 Surface #EED7C2 Accent #365247 Anchor #582239

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

Modern Café Dominant · 5 colors

Dominant #4E50B3 Anchor #3B2923 Surface #F3E1D2 Accent #769F7B Secondary #3C3734

Cerulean anchors this café scheme as the warm mid-tone, lifted by latte cream and a muted sage accent and grounded by espresso brown and a warm charcoal.

Berry & Cream Lead · 5 colors

Lead #4E50B3 Surface #F6E5D8 Anchor #5B2142 Accent #E5C2C9 Secondary #322B2F

Cerulean 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 #4E50B3 Secondary #8085A8 Support #9D9088 Ink #18140F

Cerulean 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 Cerulean carrying the quiet middle.

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Color Lab

How #4E50B3 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 20/100

Cool

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

Softness 36/100

Low

Middle-weight — neither delicate nor heavy.

Depth 53/100

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 56/100

Moderate

Restrained and premium — deep, quiet, high-end packaging and fashion.

Brand distinctiveness 42/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 96/100

Very high

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

Surface fit 8/100

Very low

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

Print safety 76/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #4E50B3

For UI

For branding

For interior

For fashion

People also use #4E50B3 with

Carolina Blue Royal Purple Brass 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 6.7:1. Use

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

Avoid beside #6D4DB3 — 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 #4E50B3 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: #4E50B3;
  --color-base-rgb: 78 80 179;
  --color-base-oklch: oklch(48.5% 0.154 278.1);
  --color-50: #F4F4FB;
  --color-100: #E2E2F3;
  --color-200: #C6C6E6;
  --color-300: #9E9FD1;
  --color-400: #7879BA;
  --color-500: #57589E;
  --color-600: #48497A;
  --color-700: #373858;
  --color-800: #27273A;
  --color-900: #191924;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  cerulean: {
    50: '#F4F4FB',
    100: '#E2E2F3',
    200: '#C6C6E6',
    300: '#9E9FD1',
    400: '#7879BA',
    500: '#57589E',
    600: '#48497A',
    700: '#373858',
    800: '#27273A',
    900: '#191924',
  },
}

$base: #4E50B3;
$base-ink: #FFFFFF;
$base-50: #F4F4FB;
$base-100: #E2E2F3;
$base-200: #C6C6E6;
$base-300: #9E9FD1;
$base-400: #7879BA;
$base-500: #57589E;
$base-600: #48497A;
$base-700: #373858;
$base-800: #27273A;
$base-900: #191924;
$base-hover: #3D3F8F;
$base-subtle: #CDCEE4;

{
    "color": {
        "base": {
            "value": "#4E50B3",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F4F4FB",
                "type": "color"
            },
            "100": {
                "value": "#E2E2F3",
                "type": "color"
            },
            "200": {
                "value": "#C6C6E6",
                "type": "color"
            },
            "300": {
                "value": "#9E9FD1",
                "type": "color"
            },
            "400": {
                "value": "#7879BA",
                "type": "color"
            },
            "500": {
                "value": "#57589E",
                "type": "color"
            },
            "600": {
                "value": "#48497A",
                "type": "color"
            },
            "700": {
                "value": "#373858",
                "type": "color"
            },
            "800": {
                "value": "#27273A",
                "type": "color"
            },
            "900": {
                "value": "#191924",
                "type": "color"
            }
        }
    }
}

Palettes built on #4E50B3

Color Lab

Pairs with #4E50B3

UI roles & guardrails

In real applications

Scales

Every model

Export