What color is #331B43?

#331B43 is a dark violet. In RGB it is rgb(51, 27, 67), and in HSL hsl(276, 43%, 18%).

Is #331B43 accessible as text?

On white, #331B43 has a contrast ratio of 15.23:1 (passes WCAG AA for body text); on black it is 1.38:1 (fails). For text placed on #331B43, use white for the best readability.

What is the closest Tailwind color to #331B43?

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

What colors go well with #331B43?

#331B43 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #2A421A. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #331B43 below.

Is #331B43 good for buttons?

#331B43 works well for buttons and highlights, but use white text on #331B43 — black text only reaches 1.38:1, below the 4.5:1 needed for normal-size labels.

Is #331B43 the same as CSS midnightblue?

No — #331B43 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.

#331B43 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #331B43

Not just a swatch — here's how #331B43 works with other colors. Named schemes with #331B43 in its natural role, and a note on why the supporting colors balance it.

Vintage Leather Lead · 5 colors

Lead #331B43 Secondary #7E4630 Surface #EDD8C1 Accent #355249 Anchor #592236

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.

Japanese Sand Base · 5 colors

Base #331B43 Surface #F1E8DC Highlight #F8F0E7 Secondary #BDADA1 Ink #2C2723

Russian Violet sets a calm, sun-bleached base here, wrapped in bone and paper off-whites and a soft greige, with a single ink accent for wabi-sabi restraint.

Luxury Packaging Feature · 5 colors

Feature #331B43 Anchor #141210 Accent #D99954 Secondary #2C2630 Surface #F3EDE3

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 #331B43 Secondary #504857 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.

Berry & Cream Lead · 5 colors

Lead #331B43 Surface #F5E6D7 Anchor #5C213F Accent #E5C2C7 Secondary #332B2F

Russian Violet sits between cream and a deep berry here, softened by a blush accent and grounded by charcoal.

Build a working theme in the generator →

Color Lab

How #331B43 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 46/100

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 74/100

High

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

Brand distinctiveness 29/100

Low

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

UI accent fit 27/100

Low

Weak as an action color — too pale, too dark or too muted to signal.

Surface fit 44/100

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 #331B43

For UI

For branding

For interior

For fashion

People also use #331B43 with

Russian Violet British Racing 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 15.2:1. Use

Subtle surface Use #D8C8E2 for cards and hover fills. Tint 80

Avoid beside #3F1A42 — 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 #331B43 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: #331B43;
  --color-base-rgb: 51 27 67;
  --color-base-oklch: oklch(27.5% 0.076 310.0);
  --color-50: #F8F4FB;
  --color-100: #ECE1F4;
  --color-200: #DAC5E8;
  --color-300: #BD9CD3;
  --color-400: #A075BD;
  --color-500: #8255A0;
  --color-600: #66467C;
  --color-700: #4B3659;
  --color-800: #33263B;
  --color-900: #201924;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  russian-violet: {
    50: '#F8F4FB',
    100: '#ECE1F4',
    200: '#DAC5E8',
    300: '#BD9CD3',
    400: '#A075BD',
    500: '#8255A0',
    600: '#66467C',
    700: '#4B3659',
    800: '#33263B',
    900: '#201924',
  },
}

$base: #331B43;
$base-ink: #FFFFFF;
$base-50: #F8F4FB;
$base-100: #ECE1F4;
$base-200: #DAC5E8;
$base-300: #BD9CD3;
$base-400: #A075BD;
$base-500: #8255A0;
$base-600: #66467C;
$base-700: #4B3659;
$base-800: #33263B;
$base-900: #201924;
$base-hover: #281535;
$base-subtle: #C4ACD5;

{
    "color": {
        "base": {
            "value": "#331B43",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F8F4FB",
                "type": "color"
            },
            "100": {
                "value": "#ECE1F4",
                "type": "color"
            },
            "200": {
                "value": "#DAC5E8",
                "type": "color"
            },
            "300": {
                "value": "#BD9CD3",
                "type": "color"
            },
            "400": {
                "value": "#A075BD",
                "type": "color"
            },
            "500": {
                "value": "#8255A0",
                "type": "color"
            },
            "600": {
                "value": "#66467C",
                "type": "color"
            },
            "700": {
                "value": "#4B3659",
                "type": "color"
            },
            "800": {
                "value": "#33263B",
                "type": "color"
            },
            "900": {
                "value": "#201924",
                "type": "color"
            }
        }
    }
}