What color is #331B54?

#331B54 is a dark violet. In RGB it is rgb(51, 27, 84), and in HSL hsl(265, 51%, 22%).

Is #331B54 accessible as text?

On white, #331B54 has a contrast ratio of 14.73:1 (passes WCAG AA for body text); on black it is 1.43:1 (fails). For text placed on #331B54, use white for the best readability.

What is the closest Tailwind color to #331B54?

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

What colors go well with #331B54?

#331B54 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #3D551B. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #331B54 below.

Is #331B54 good for buttons?

#331B54 works well for buttons and highlights, but use white text on #331B54 — black text only reaches 1.43:1, below the 4.5:1 needed for normal-size labels.

Is #331B54 the same as CSS midnightblue?

No — #331B54 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.

#331B54 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #331B54

Not just a swatch — here's how #331B54 works with other colors. Named schemes with #331B54 in its natural role, and a note on why the supporting colors balance it.

Luxury Packaging Feature · 5 colors

Feature #331B54 Anchor #141210 Accent #DA9856 Secondary #2A2732 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 #331B54 Anchor #2A2A2E Secondary #6E6E74 Surface #EEE5DA Accent #1B0322

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 #331B54 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 #331B54 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 #331B54 Secondary #524B60 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 #331B54 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 40/100

Neutral

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

Softness 26/100

Low

Firm and assertive — carries weight and contrast.

Depth 71/100

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 42/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 75/100

High

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

Brand distinctiveness 38/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 34/100

Low

Workable accent with care around contrast.

Surface fit 36/100

Low

Usable as a tinted surface in measured doses.

Print safety 88/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #331B54

For UI

For branding

For interior

For fashion

People also use #331B54 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 14.7:1. Use

Subtle surface Use #D5C9E6 for cards and hover fills. Tint 80

Avoid beside #461B55 — 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 #331B54 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: #331B54;
  --color-base-rgb: 51 27 84;
  --color-base-oklch: oklch(28.8% 0.099 299.5);
  --color-50: #F7F3FC;
  --color-100: #E9E0F6;
  --color-200: #D3C1EB;
  --color-300: #B297D9;
  --color-400: #926FC3;
  --color-500: #734EA7;
  --color-600: #5C4181;
  --color-700: #44335C;
  --color-800: #2E243D;
  --color-900: #1D1826;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  russian-violet: {
    50: '#F7F3FC',
    100: '#E9E0F6',
    200: '#D3C1EB',
    300: '#B297D9',
    400: '#926FC3',
    500: '#734EA7',
    600: '#5C4181',
    700: '#44335C',
    800: '#2E243D',
    900: '#1D1826',
  },
}

$base: #331B54;
$base-ink: #FFFFFF;
$base-50: #F7F3FC;
$base-100: #E9E0F6;
$base-200: #D3C1EB;
$base-300: #B297D9;
$base-400: #926FC3;
$base-500: #734EA7;
$base-600: #5C4181;
$base-700: #44335C;
$base-800: #2E243D;
$base-900: #1D1826;
$base-hover: #291644;
$base-subtle: #BFACDA;

{
    "color": {
        "base": {
            "value": "#331B54",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F7F3FC",
                "type": "color"
            },
            "100": {
                "value": "#E9E0F6",
                "type": "color"
            },
            "200": {
                "value": "#D3C1EB",
                "type": "color"
            },
            "300": {
                "value": "#B297D9",
                "type": "color"
            },
            "400": {
                "value": "#926FC3",
                "type": "color"
            },
            "500": {
                "value": "#734EA7",
                "type": "color"
            },
            "600": {
                "value": "#5C4181",
                "type": "color"
            },
            "700": {
                "value": "#44335C",
                "type": "color"
            },
            "800": {
                "value": "#2E243D",
                "type": "color"
            },
            "900": {
                "value": "#1D1826",
                "type": "color"
            }
        }
    }
}