What color is #340F57?

#340F57 is a dark, vivid violet. In RGB it is rgb(52, 15, 87), and in HSL hsl(271, 71%, 20%).

Is #340F57 accessible as text?

On white, #340F57 has a contrast ratio of 15.53:1 (passes WCAG AA for body text); on black it is 1.35:1 (fails). For text placed on #340F57, use white for the best readability.

What is the closest Tailwind color to #340F57?

The nearest Tailwind CSS token is purple-950 (#3C0366).

What colors go well with #340F57?

#340F57 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #32570F. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #340F57 below.

Is #340F57 good for buttons?

#340F57 works well for buttons and highlights, but use white text on #340F57 — black text only reaches 1.35:1, below the 4.5:1 needed for normal-size labels.

Is #340F57 the same as CSS midnightblue?

No — #340F57 is not the CSS named color midnightblue, but midnightblue (#191970) 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.

#340F57 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #340F57

Not just a swatch — here's how #340F57 works with other colors. Named schemes with #340F57 in its natural role, and a note on why the supporting colors balance it.

Luxury Packaging Feature · 5 colors

Feature #340F57 Anchor #141210 Accent #D99855 Secondary #2B2731 Surface #F3ECE3

Russian Violet 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.

Moody Editorial Color · 5 colors

Color #340F57 Anchor #2A2A2E Secondary #6E6E74 Surface #EEE5DA Accent #1A0021

Russian Violet adds the colour to this moody editorial scheme — charcoal and a mid-grey around it, a bone highlight, and a muted jewel accent drawn from Russian Violet.

Coastal Morning Lead · 5 colors

Lead #340F57 Accent #A5C4C4 Surface #E9D6BF Secondary #9AA0A1 Anchor #23334B

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

Berry & Cream Lead · 5 colors

Lead #340F57 Surface #F5E6D7 Anchor #5C2140 Accent #E5C2C7 Secondary #332B2F

Russian Violet 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 #340F57 Secondary #50465F Support #9C9088 Ink #18140F

Russian Violet 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 Russian Violet carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #340F57 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 39/100

Neutral

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

Softness 24/100

Low

Firm and assertive — carries weight and contrast.

Depth 73/100

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 36/100

Low

A faint retro warmth without tipping into sepia.

Luxury 76/100

High

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

Brand distinctiveness 46/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 32/100

Low

Workable accent with care around contrast.

Surface fit 31/100

Low

Usable as a tinted surface in measured doses.

Print safety 85/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #340F57

For UI

For branding

For interior

For fashion

People also use #340F57 with

Midnight Blue Tyrian Purple Army Green Gainsboro Onyx

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 15.5:1. Use

Subtle surface Use #D7C1EB for cards and hover fills. Tint 80

Avoid beside #4C0F57 — 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 #340F57 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: #340F57;
  --color-base-rgb: 52 15 87;
  --color-base-oklch: oklch(27.5% 0.120 302.2);
  --color-50: #F8F1FD;
  --color-100: #EBDBFA;
  --color-200: #D7B9F3;
  --color-300: #B98AE5;
  --color-400: #9B5ED4;
  --color-500: #7C3CB9;
  --color-600: #62358D;
  --color-700: #482B64;
  --color-800: #311F42;
  --color-900: #1F1528;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  russian-violet: {
    50: '#F8F1FD',
    100: '#EBDBFA',
    200: '#D7B9F3',
    300: '#B98AE5',
    400: '#9B5ED4',
    500: '#7C3CB9',
    600: '#62358D',
    700: '#482B64',
    800: '#311F42',
    900: '#1F1528',
  },
}

$base: #340F57;
$base-ink: #FFFFFF;
$base-50: #F8F1FD;
$base-100: #EBDBFA;
$base-200: #D7B9F3;
$base-300: #B98AE5;
$base-400: #9B5ED4;
$base-500: #7C3CB9;
$base-600: #62358D;
$base-700: #482B64;
$base-800: #311F42;
$base-900: #1F1528;
$base-hover: #2A0C46;
$base-subtle: #C3A1E3;

{
    "color": {
        "base": {
            "value": "#340F57",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F8F1FD",
                "type": "color"
            },
            "100": {
                "value": "#EBDBFA",
                "type": "color"
            },
            "200": {
                "value": "#D7B9F3",
                "type": "color"
            },
            "300": {
                "value": "#B98AE5",
                "type": "color"
            },
            "400": {
                "value": "#9B5ED4",
                "type": "color"
            },
            "500": {
                "value": "#7C3CB9",
                "type": "color"
            },
            "600": {
                "value": "#62358D",
                "type": "color"
            },
            "700": {
                "value": "#482B64",
                "type": "color"
            },
            "800": {
                "value": "#311F42",
                "type": "color"
            },
            "900": {
                "value": "#1F1528",
                "type": "color"
            }
        }
    }
}