What color is #3D3159?

#3D3159 is a dark, muted indigo. In RGB it is rgb(61, 49, 89), and in HSL hsl(258, 29%, 27%).

Is #3D3159 accessible as text?

On white, #3D3159 has a contrast ratio of 11.78:1 (passes WCAG AA for body text); on black it is 1.78:1 (fails). For text placed on #3D3159, use white for the best readability.

What is the closest Tailwind color to #3D3159?

The nearest Tailwind CSS token is mauve-700 (#463947).

What colors go well with #3D3159?

#3D3159 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #4D5931. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #3D3159 below.

Is #3D3159 good for buttons?

#3D3159 works well for buttons and highlights, but use white text on #3D3159 — black text only reaches 1.78:1, below the 4.5:1 needed for normal-size labels.

Is #3D3159 the same as CSS darkslateblue?

No — #3D3159 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.

#3D3159 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #3D3159

Not just a swatch — here's how #3D3159 works with other colors. Named schemes with #3D3159 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #3D3159 Accent #A5C4C3 Surface #E9D6BF Secondary #9AA0A1 Anchor #23334A

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

Nordic Calm Accent · 5 colors

Accent #3D3159 Secondary #AFB4B8 Surface #F1F2F0 Support #7F92A7 Anchor #2E3236

Onyx keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.

Vintage Leather Lead · 5 colors

Lead #3D3159 Secondary #7E4632 Surface #EDD8C2 Accent #355248 Anchor #582237

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

Luxury Packaging Feature · 5 colors

Feature #3D3159 Anchor #141210 Accent #DA9856 Secondary #2A2732 Surface #F3ECE3

Onyx carries the depth in this luxury scheme, offset by a brass accent and near-black and held together by a deep neutral and an off-white surface.

Minimal Editorial Surface · 5 colors

Surface #F8F4EF Accent #3D3159 Secondary #605D6C Support #9D9088 Ink #18140F

Onyx 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 Onyx carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #3D3159 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 42/100

Neutral

Balanced temperature — flexible, sits between warm and cool schemes.

Softness 33/100

Low

Middle-weight — neither delicate nor heavy.

Depth 64/100

High

Deep and grounding — anchors a layout, strong dark-mode base.

Naturalness 0/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 45/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 68/100

High

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

Brand distinctiveness 27/100

Low

Quiet and neutral — a supporting tone, not a signature.

UI accent fit 45/100

Moderate

Workable accent with care around contrast.

Surface fit 41/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 91/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #3D3159

For UI

For branding

For interior

For fashion

People also use #3D3159 with

Classic Blue Eggplant Army Green Gainsboro Gunmetal Gray

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 11.8:1. Use

Subtle surface Use #D7D2E2 for cards and hover fills. Tint 80

Avoid beside #4A3159 — 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 #3D3159 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: #3D3159;
  --color-base-rgb: 61 49 89;
  --color-base-oklch: oklch(34.6% 0.069 296.4);
  --color-50: #F6F5FA;
  --color-100: #E8E4F1;
  --color-200: #D1CAE2;
  --color-300: #B0A5CA;
  --color-400: #8F81B1;
  --color-500: #706194;
  --color-600: #5A4F73;
  --color-700: #433C53;
  --color-800: #2E2937;
  --color-900: #1D1B23;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  onyx: {
    50: '#F6F5FA',
    100: '#E8E4F1',
    200: '#D1CAE2',
    300: '#B0A5CA',
    400: '#8F81B1',
    500: '#706194',
    600: '#5A4F73',
    700: '#433C53',
    800: '#2E2937',
    900: '#1D1B23',
  },
}

$base: #3D3159;
$base-ink: #FFFFFF;
$base-50: #F6F5FA;
$base-100: #E8E4F1;
$base-200: #D1CAE2;
$base-300: #B0A5CA;
$base-400: #8F81B1;
$base-500: #706194;
$base-600: #5A4F73;
$base-700: #433C53;
$base-800: #2E2937;
$base-900: #1D1B23;
$base-hover: #312747;
$base-subtle: #C2BBD3;

{
    "color": {
        "base": {
            "value": "#3D3159",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F6F5FA",
                "type": "color"
            },
            "100": {
                "value": "#E8E4F1",
                "type": "color"
            },
            "200": {
                "value": "#D1CAE2",
                "type": "color"
            },
            "300": {
                "value": "#B0A5CA",
                "type": "color"
            },
            "400": {
                "value": "#8F81B1",
                "type": "color"
            },
            "500": {
                "value": "#706194",
                "type": "color"
            },
            "600": {
                "value": "#5A4F73",
                "type": "color"
            },
            "700": {
                "value": "#433C53",
                "type": "color"
            },
            "800": {
                "value": "#2E2937",
                "type": "color"
            },
            "900": {
                "value": "#1D1B23",
                "type": "color"
            }
        }
    }
}

Palettes built on #3D3159

Color Lab

Pairs with #3D3159

UI roles & guardrails

In real applications

Scales

Every model

Export