What color is #331D70?

#331D70 is a dark indigo. In RGB it is rgb(51, 29, 112), and in HSL hsl(256, 59%, 28%).

Is #331D70 accessible as text?

On white, #331D70 has a contrast ratio of 13.54:1 (passes WCAG AA for body text); on black it is 1.55:1 (fails). For text placed on #331D70, use white for the best readability.

What is the closest Tailwind color to #331D70?

The nearest Tailwind CSS token is violet-950 (#2F0D68).

What colors go well with #331D70?

#331D70 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #5B721D. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #331D70 below.

Is #331D70 good for buttons?

#331D70 works well for buttons and highlights, but use white text on #331D70 — black text only reaches 1.55:1, below the 4.5:1 needed for normal-size labels.

Is #331D70 the same as CSS midnightblue?

No — #331D70 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.

#331D70 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #331D70

Not just a swatch — here's how #331D70 works with other colors. Named schemes with #331D70 in its natural role, and a note on why the supporting colors balance it.

Luxury Packaging Feature · 5 colors

Feature #331D70 Anchor #141210 Accent #DB9757 Secondary #282732 Surface #F3ECE3

Midnight Blue 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 #331D70 Anchor #2A2A2E Secondary #6E6E74 Surface #EEE5DA Accent #200235

Midnight Blue 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 Midnight Blue.

Coastal Morning Lead · 5 colors

Lead #331D70 Accent #A5C4C3 Surface #E9D6BF Secondary #9AA0A1 Anchor #22334A

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

Vintage Leather Lead · 5 colors

Lead #331D70 Secondary #7E4633 Surface #EDD8C2 Accent #365247 Anchor #582238

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

Minimal Editorial Surface · 5 colors

Surface #F8F4EF Accent #331D70 Secondary #565370 Support #9D9088 Ink #18140F

Midnight Blue 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 Midnight Blue carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #331D70 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 29/100

Cool

Reads cool and recessive — calming, technical, good for trust-led UI.

Softness 26/100

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 34/100

Low

A faint retro warmth without tipping into sepia.

Luxury 72/100

High

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

Brand distinctiveness 52/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 45/100

Moderate

Workable accent with care around contrast.

Surface fit 24/100

Low

Too saturated or mid-toned for big areas — keep it to accents.

Print safety 81/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #331D70

For UI

For branding

For interior

For fashion

People also use #331D70 with

Classic Blue Eminence Dark Olive 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 13.5:1. Use

Subtle surface Use #D3CBEA for cards and hover fills. Tint 80

Avoid beside #501D72 — 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 #331D70 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: #331D70;
  --color-base-rgb: 51 29 112;
  --color-base-oklch: oklch(31.6% 0.134 288.4);
  --color-50: #F5F2FC;
  --color-100: #E5DEF7;
  --color-200: #CBBEEE;
  --color-300: #A692DE;
  --color-400: #8268CA;
  --color-500: #6246AE;
  --color-600: #503C86;
  --color-700: #3C305F;
  --color-800: #2A223F;
  --color-900: #1B1727;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  midnight-blue: {
    50: '#F5F2FC',
    100: '#E5DEF7',
    200: '#CBBEEE',
    300: '#A692DE',
    400: '#8268CA',
    500: '#6246AE',
    600: '#503C86',
    700: '#3C305F',
    800: '#2A223F',
    900: '#1B1727',
  },
}

$base: #331D70;
$base-ink: #FFFFFF;
$base-50: #F5F2FC;
$base-100: #E5DEF7;
$base-200: #CBBEEE;
$base-300: #A692DE;
$base-400: #8268CA;
$base-500: #6246AE;
$base-600: #503C86;
$base-700: #3C305F;
$base-800: #2A223F;
$base-900: #1B1727;
$base-hover: #29175B;
$base-subtle: #BCAFE1;

{
    "color": {
        "base": {
            "value": "#331D70",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F5F2FC",
                "type": "color"
            },
            "100": {
                "value": "#E5DEF7",
                "type": "color"
            },
            "200": {
                "value": "#CBBEEE",
                "type": "color"
            },
            "300": {
                "value": "#A692DE",
                "type": "color"
            },
            "400": {
                "value": "#8268CA",
                "type": "color"
            },
            "500": {
                "value": "#6246AE",
                "type": "color"
            },
            "600": {
                "value": "#503C86",
                "type": "color"
            },
            "700": {
                "value": "#3C305F",
                "type": "color"
            },
            "800": {
                "value": "#2A223F",
                "type": "color"
            },
            "900": {
                "value": "#1B1727",
                "type": "color"
            }
        }
    }
}