What color is #331E51?

#331E51 is a dark violet. In RGB it is rgb(51, 30, 81), and in HSL hsl(265, 46%, 22%).

Is #331E51 accessible as text?

On white, #331E51 has a contrast ratio of 14.53:1 (passes WCAG AA for body text); on black it is 1.45:1 (fails). For text placed on #331E51, use white for the best readability.

What is the closest Tailwind color to #331E51?

The nearest Tailwind CSS token is indigo-950 (#1E1A4D).

What colors go well with #331E51?

#331E51 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #3C521E. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #331E51 below.

Is #331E51 good for buttons?

#331E51 works well for buttons and highlights, but use white text on #331E51 — black text only reaches 1.45:1, below the 4.5:1 needed for normal-size labels.

Is #331E51 the same as CSS midnightblue?

No — #331E51 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.

#331E51 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #331E51

Not just a swatch — here's how #331E51 works with other colors. Named schemes with #331E51 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #331E51 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.

Nordic Calm Accent · 5 colors

Accent #331E51 Secondary #AFB4B8 Surface #F1F2F0 Support #7F92A7 Anchor #2E3236

Russian Violet 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 #331E51 Secondary #7E4631 Surface #EDD8C1 Accent #355248 Anchor #582237

Russian Violet 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 #331E51 Anchor #141210 Accent #DA9856 Secondary #2A2731 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.

Minimal Editorial Surface · 5 colors

Surface #F8F4EF Accent #331E51 Secondary #524C5F 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 #331E51 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 41/100

Neutral

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

Softness 27/100

Low

Firm and assertive — carries weight and contrast.

Depth 70/100

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 44/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 74/100

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 34/100

Low

Workable accent with care around contrast.

Surface fit 39/100

Low

Usable as a tinted surface in measured doses.

Print safety 89/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #331E51

For UI

For branding

For interior

For fashion

People also use #331E51 with

Yale Blue Tyrian Purple Army Green 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 14.5:1. Use

Subtle surface Use #D5CAE4 for cards and hover fills. Tint 80

Avoid beside #451E52 — 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 #331E51 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: #331E51;
  --color-base-rgb: 51 30 81;
  --color-base-oklch: oklch(29.1% 0.090 299.8);
  --color-50: #F7F3FB;
  --color-100: #E9E1F5;
  --color-200: #D3C4E9;
  --color-300: #B39AD5;
  --color-400: #9373BF;
  --color-500: #7452A3;
  --color-600: #5C447E;
  --color-700: #44355A;
  --color-800: #2F253C;
  --color-900: #1E1825;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  russian-violet: {
    50: '#F7F3FB',
    100: '#E9E1F5',
    200: '#D3C4E9',
    300: '#B39AD5',
    400: '#9373BF',
    500: '#7452A3',
    600: '#5C447E',
    700: '#44355A',
    800: '#2F253C',
    900: '#1E1825',
  },
}

$base: #331E51;
$base-ink: #FFFFFF;
$base-50: #F7F3FB;
$base-100: #E9E1F5;
$base-200: #D3C4E9;
$base-300: #B39AD5;
$base-400: #9373BF;
$base-500: #7452A3;
$base-600: #5C447E;
$base-700: #44355A;
$base-800: #2F253C;
$base-900: #1E1825;
$base-hover: #291842;
$base-subtle: #C0AED8;

{
    "color": {
        "base": {
            "value": "#331E51",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F7F3FB",
                "type": "color"
            },
            "100": {
                "value": "#E9E1F5",
                "type": "color"
            },
            "200": {
                "value": "#D3C4E9",
                "type": "color"
            },
            "300": {
                "value": "#B39AD5",
                "type": "color"
            },
            "400": {
                "value": "#9373BF",
                "type": "color"
            },
            "500": {
                "value": "#7452A3",
                "type": "color"
            },
            "600": {
                "value": "#5C447E",
                "type": "color"
            },
            "700": {
                "value": "#44355A",
                "type": "color"
            },
            "800": {
                "value": "#2F253C",
                "type": "color"
            },
            "900": {
                "value": "#1E1825",
                "type": "color"
            }
        }
    }
}