What color is #340F82?

#340F82 is a dark, vivid indigo. In RGB it is rgb(52, 15, 130), and in HSL hsl(259, 79%, 28%).

Is #340F82 accessible as text?

On white, #340F82 has a contrast ratio of 13.67:1 (passes WCAG AA for body text); on black it is 1.54:1 (fails). For text placed on #340F82, use white for the best readability.

What is the closest Tailwind color to #340F82?

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

What colors go well with #340F82?

#340F82 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #5C800F. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #340F82 below.

Is #340F82 good for buttons?

#340F82 works well for buttons and highlights, but use white text on #340F82 — black text only reaches 1.54:1, below the 4.5:1 needed for normal-size labels.

Is #340F82 the same as CSS indigo?

No — #340F82 is not the CSS named color indigo, but indigo (#4B0082) is the closest CSS named color.

#340F82 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #340F82

Not just a swatch — here's how #340F82 works with other colors. Named schemes with #340F82 in its natural role, and a note on why the supporting colors balance it.

Luxury Packaging Feature · 5 colors

Feature #340F82 Anchor #141210 Accent #DB9757 Secondary #282832 Surface #F3ECE3

Indigo 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 #340F82 Anchor #2A2A2E Secondary #6E6E74 Surface #EEE5DA Accent #23003F

Indigo 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 Indigo.

Coastal Morning Lead · 5 colors

Lead #340F82 Accent #A5C4C3 Surface #E9D5BF Secondary #9AA0A1 Anchor #22334A

Indigo 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 #340F82 Secondary #7E4533 Surface #EDD8C2 Accent #365247 Anchor #582238

Indigo 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 #340F82 Secondary #555378 Support #9D9088 Ink #18140F

Indigo 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 Indigo carrying the quiet middle.

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Color Lab

How #340F82 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 22/100

Cool

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

Softness 24/100

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 26/100

Low

A faint retro warmth without tipping into sepia.

Luxury 68/100

High

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

Brand distinctiveness 65/100

High

Bold and ownable — memorable as a primary brand color.

UI accent fit 45/100

Moderate

Workable accent with care around contrast.

Surface fit 19/100

Very low

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

Print safety 76/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #340F82

For UI

For branding

For interior

For fashion

People also use #340F82 with

Egyptian Blue Purple Avocado 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 13.7:1. Use

Subtle surface Use #D3C5EF for cards and hover fills. Tint 80

Avoid beside #580F80 — 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 #340F82 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: #340F82;
  --color-base-rgb: 52 15 130;
  --color-base-oklch: oklch(32.0% 0.169 286.5);
  --color-50: #F5F1FE;
  --color-100: #E4DAFC;
  --color-200: #CAB6F6;
  --color-300: #A585EB;
  --color-400: #8158DA;
  --color-500: #6135C0;
  --color-600: #4F3092;
  --color-700: #3C2867;
  --color-800: #291D43;
  --color-900: #1B1429;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  indigo: {
    50: '#F5F1FE',
    100: '#E4DAFC',
    200: '#CAB6F6',
    300: '#A585EB',
    400: '#8158DA',
    500: '#6135C0',
    600: '#4F3092',
    700: '#3C2867',
    800: '#291D43',
    900: '#1B1429',
  },
}

$base: #340F82;
$base-ink: #FFFFFF;
$base-50: #F5F1FE;
$base-100: #E4DAFC;
$base-200: #CAB6F6;
$base-300: #A585EB;
$base-400: #8158DA;
$base-500: #6135C0;
$base-600: #4F3092;
$base-700: #3C2867;
$base-800: #291D43;
$base-900: #1B1429;
$base-hover: #290C66;
$base-subtle: #BCA7E9;

{
    "color": {
        "base": {
            "value": "#340F82",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F5F1FE",
                "type": "color"
            },
            "100": {
                "value": "#E4DAFC",
                "type": "color"
            },
            "200": {
                "value": "#CAB6F6",
                "type": "color"
            },
            "300": {
                "value": "#A585EB",
                "type": "color"
            },
            "400": {
                "value": "#8158DA",
                "type": "color"
            },
            "500": {
                "value": "#6135C0",
                "type": "color"
            },
            "600": {
                "value": "#4F3092",
                "type": "color"
            },
            "700": {
                "value": "#3C2867",
                "type": "color"
            },
            "800": {
                "value": "#291D43",
                "type": "color"
            },
            "900": {
                "value": "#1B1429",
                "type": "color"
            }
        }
    }
}

Palettes built on #340F82

Color Lab

Pairs with #340F82

UI roles & guardrails

In real applications

Scales

Every model

Export