What color is #4539B2?

#4539B2 is a medium indigo. In RGB it is rgb(69, 57, 178), and in HSL hsl(246, 51%, 46%).

Is #4539B2 accessible as text?

On white, #4539B2 has a contrast ratio of 8.46:1 (passes WCAG AA for body text); on black it is 2.48:1 (fails). For text placed on #4539B2, use white for the best readability.

What is the closest Tailwind color to #4539B2?

The nearest Tailwind CSS token is indigo-800 (#372AAC).

What colors go well with #4539B2?

#4539B2 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #A5B139. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #4539B2 below.

Is #4539B2 good for buttons?

#4539B2 works well for buttons and highlights, but use white text on #4539B2 — black text only reaches 2.48:1, below the 4.5:1 needed for normal-size labels.

Is #4539B2 the same as CSS darkslateblue?

No — #4539B2 is not the CSS named color darkslateblue, but darkslateblue (#483D8B) is the closest CSS named color.

#4539B2 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #4539B2

Not just a swatch — here's how #4539B2 works with other colors. Named schemes with #4539B2 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #4539B2 Accent #A5C4C2 Surface #EAD5BF Secondary #9AA0A1 Anchor #22334A

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 #4539B2 Secondary #7F4534 Surface #EDD7C2 Accent #365247 Anchor #582238

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 #4539B2 Anchor #3B2923 Surface #F3E1D2 Accent #759F7B 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 #4539B2 Surface #F5E5D8 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 #4539B2 Secondary #72769F 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.

Build a working theme in the generator →

Color Lab

How #4539B2 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 18/100

Cool

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

Softness 30/100

Low

Firm and assertive — carries weight and contrast.

Depth 60/100

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 27/100

Low

A faint retro warmth without tipping into sepia.

Luxury 57/100

Moderate

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

Brand distinctiveness 50/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 80/100

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 72/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #4539B2

For UI

For branding

For interior

For fashion

People also use #4539B2 with

Glaucous Dark Orchid Citron Gainsboro Prussian Blue

UI roles & guardrails

Primary action Safe as a filled button with white label. AAA

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 8.5:1. Use

Subtle surface Use #DBD9EE for cards and hover fills. Tint 80

Avoid beside #6D39B1 — 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 #4539B2 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: #4539B2;
  --color-base-rgb: 69 57 178;
  --color-base-oklch: oklch(43.7% 0.183 280.1);
  --color-50: #F4F3FC;
  --color-100: #E2E0F6;
  --color-200: #C6C1EB;
  --color-300: #9D97D9;
  --color-400: #776FC3;
  --color-500: #564EA7;
  --color-600: #484181;
  --color-700: #37335C;
  --color-800: #27243D;
  --color-900: #191826;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  cerulean: {
    50: '#F4F3FC',
    100: '#E2E0F6',
    200: '#C6C1EB',
    300: '#9D97D9',
    400: '#776FC3',
    500: '#564EA7',
    600: '#484181',
    700: '#37335C',
    800: '#27243D',
    900: '#191826',
  },
}

$base: #4539B2;
$base-ink: #FFFFFF;
$base-50: #F4F3FC;
$base-100: #E2E0F6;
$base-200: #C6C1EB;
$base-300: #9D97D9;
$base-400: #776FC3;
$base-500: #564EA7;
$base-600: #484181;
$base-700: #37335C;
$base-800: #27243D;
$base-900: #191826;
$base-hover: #382E8E;
$base-subtle: #C9C6E6;

{
    "color": {
        "base": {
            "value": "#4539B2",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F4F3FC",
                "type": "color"
            },
            "100": {
                "value": "#E2E0F6",
                "type": "color"
            },
            "200": {
                "value": "#C6C1EB",
                "type": "color"
            },
            "300": {
                "value": "#9D97D9",
                "type": "color"
            },
            "400": {
                "value": "#776FC3",
                "type": "color"
            },
            "500": {
                "value": "#564EA7",
                "type": "color"
            },
            "600": {
                "value": "#484181",
                "type": "color"
            },
            "700": {
                "value": "#37335C",
                "type": "color"
            },
            "800": {
                "value": "#27243D",
                "type": "color"
            },
            "900": {
                "value": "#191826",
                "type": "color"
            }
        }
    }
}

Palettes built on #4539B2

Color Lab

Pairs with #4539B2

UI roles & guardrails

In real applications

Scales

Every model

Export