What color is #4E3789?

#4E3789 is a dark indigo. In RGB it is rgb(78, 55, 137), and in HSL hsl(257, 43%, 38%).

Is #4E3789 accessible as text?

On white, #4E3789 has a contrast ratio of 9.41:1 (passes WCAG AA for body text); on black it is 2.23:1 (fails). For text placed on #4E3789, use white for the best readability.

What is the closest Tailwind color to #4E3789?

The nearest Tailwind CSS token is indigo-900 (#312C85).

What colors go well with #4E3789?

#4E3789 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #738B37. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #4E3789 below.

Is #4E3789 good for buttons?

#4E3789 works well for buttons and highlights, but use white text on #4E3789 — black text only reaches 2.23:1, below the 4.5:1 needed for normal-size labels.

Is #4E3789 the same as CSS darkslateblue?

No — #4E3789 is not the CSS named color darkslateblue, but darkslateblue (#483D8B) is the closest CSS named color by perceptual color distance — it sits in a different color family, so treat it as a rough reference, not a match.

#4E3789 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #4E3789

Not just a swatch — here's how #4E3789 works with other colors. Named schemes with #4E3789 in its natural role, and a note on why the supporting colors balance it.

Berry & Cream Lead · 5 colors

Lead #4E3789 Surface #F5E5D7 Anchor #5C2141 Accent #E5C2C8 Secondary #332B2F

Dark Slate Blue sits between cream and a deep berry here, softened by a blush accent and grounded by charcoal.

Coastal Morning Lead · 5 colors

Lead #4E3789 Accent #A5C4C3 Surface #E9D6BF Secondary #9AA0A1 Anchor #22334A

Dark Slate Blue 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 #4E3789 Secondary #7E4632 Surface #EDD8C2 Accent #355248 Anchor #582237

Dark Slate 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.

Modern Café Dominant · 5 colors

Dominant #4E3789 Anchor #3B2923 Surface #F3E1D1 Accent #749F7D Secondary #3C3734

Dark Slate Blue 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.

Minimal Editorial Surface · 5 colors

Surface #F8F4EF Accent #4E3789 Secondary #716C8A Support #9D9088 Ink #18140F

Dark Slate 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 Dark Slate Blue carrying the quiet middle.

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Color Lab

How #4E3789 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 32/100

Cool

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

Softness 33/100

Low

Middle-weight — neither delicate nor heavy.

Depth 60/100

High

Mid depth — usable as an accent or a muted ground.

Naturalness 0/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 43/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 64/100

High

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

Brand distinctiveness 35/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 77/100

High

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

Surface fit 19/100

Very low

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

Print safety 83/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #4E3789

For UI

For branding

For interior

For fashion

People also use #4E3789 with

Lapis Lazuli Eminence Olive Drab Gainsboro Russian Violet

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 9.4:1. Use

Subtle surface Use #DBD6E9 for cards and hover fills. Tint 80

Avoid beside #6B378B — 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 #4E3789 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: #4E3789;
  --color-base-rgb: 78 55 137;
  --color-base-oklch: oklch(40.8% 0.131 292.6);
  --color-50: #F6F4FB;
  --color-100: #E7E1F4;
  --color-200: #CFC5E8;
  --color-300: #AC9CD3;
  --color-400: #8A75BD;
  --color-500: #6A55A0;
  --color-600: #55467C;
  --color-700: #403659;
  --color-800: #2C263B;
  --color-900: #1C1924;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  dark-slate-blue: {
    50: '#F6F4FB',
    100: '#E7E1F4',
    200: '#CFC5E8',
    300: '#AC9CD3',
    400: '#8A75BD',
    500: '#6A55A0',
    600: '#55467C',
    700: '#403659',
    800: '#2C263B',
    900: '#1C1924',
  },
}

$base: #4E3789;
$base-ink: #FFFFFF;
$base-50: #F6F4FB;
$base-100: #E7E1F4;
$base-200: #CFC5E8;
$base-300: #AC9CD3;
$base-400: #8A75BD;
$base-500: #6A55A0;
$base-600: #55467C;
$base-700: #403659;
$base-800: #2C263B;
$base-900: #1C1924;
$base-hover: #3F2C6F;
$base-subtle: #C9C0DF;

{
    "color": {
        "base": {
            "value": "#4E3789",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F6F4FB",
                "type": "color"
            },
            "100": {
                "value": "#E7E1F4",
                "type": "color"
            },
            "200": {
                "value": "#CFC5E8",
                "type": "color"
            },
            "300": {
                "value": "#AC9CD3",
                "type": "color"
            },
            "400": {
                "value": "#8A75BD",
                "type": "color"
            },
            "500": {
                "value": "#6A55A0",
                "type": "color"
            },
            "600": {
                "value": "#55467C",
                "type": "color"
            },
            "700": {
                "value": "#403659",
                "type": "color"
            },
            "800": {
                "value": "#2C263B",
                "type": "color"
            },
            "900": {
                "value": "#1C1924",
                "type": "color"
            }
        }
    }
}

Palettes built on #4E3789

Color Lab

Pairs with #4E3789

UI roles & guardrails

In real applications

Scales

Every model

Export