What color is #42166B?

#42166B is a dark violet. In RGB it is rgb(66, 22, 107), and in HSL hsl(271, 66%, 25%).

Is #42166B accessible as text?

On white, #42166B has a contrast ratio of 13.47:1 (passes WCAG AA for body text); on black it is 1.56:1 (fails). For text placed on #42166B, use white for the best readability.

What is the closest Tailwind color to #42166B?

The nearest Tailwind CSS token is purple-950 (#3C0366).

What colors go well with #42166B?

#42166B pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #3E6A16. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #42166B below.

Is #42166B good for buttons?

#42166B works well for buttons and highlights, but use white text on #42166B — black text only reaches 1.56:1, below the 4.5:1 needed for normal-size labels.

Is #42166B the same as CSS indigo?

No — #42166B is not the CSS named color indigo, but indigo (#4B0082) is the closest CSS named color.

#42166B Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #42166B

Not just a swatch — here's how #42166B works with other colors. Named schemes with #42166B in its natural role, and a note on why the supporting colors balance it.

Luxury Packaging Feature · 5 colors

Feature #42166B Anchor #141210 Accent #D99855 Secondary #2B2731 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 #42166B Anchor #2A2A2E Secondary #6E6E74 Surface #EEE5DA Accent #280030

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 #42166B Accent #A5C4C4 Surface #E9D6BF Secondary #9AA0A1 Anchor #23334B

Indigo 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 #42166B Surface #F5E6D7 Anchor #5C2140 Accent #E5C2C7 Secondary #332B2F

Indigo 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 #42166B Secondary #5D526F Support #9C9088 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.

Build a working theme in the generator →

Color Lab

How #42166B 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 38/100

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 36/100

Low

A faint retro warmth without tipping into sepia.

Luxury 71/100

High

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

Brand distinctiveness 53/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 47/100

Moderate

Workable accent with care around contrast.

Surface fit 22/100

Low

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

Print safety 83/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #42166B

For UI

For branding

For interior

For fashion

People also use #42166B with

Phthalo Blue Byzantium Dark Olive 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 13.5:1. Use

Subtle surface Use #D9C7EB for cards and hover fills. Tint 80

Avoid beside #5D166A — 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 #42166B 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: #42166B;
  --color-base-rgb: 66 22 107;
  --color-base-oklch: oklch(32.1% 0.138 302.7);
  --color-50: #F8F2FD;
  --color-100: #EBDCF9;
  --color-200: #D7BBF1;
  --color-300: #B98DE2;
  --color-400: #9B62D0;
  --color-500: #7C40B5;
  --color-600: #62388A;
  --color-700: #482D62;
  --color-800: #312140;
  --color-900: #1F1628;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  indigo: {
    50: '#F8F2FD',
    100: '#EBDCF9',
    200: '#D7BBF1',
    300: '#B98DE2',
    400: '#9B62D0',
    500: '#7C40B5',
    600: '#62388A',
    700: '#482D62',
    800: '#312140',
    900: '#1F1628',
  },
}

$base: #42166B;
$base-ink: #FFFFFF;
$base-50: #F8F2FD;
$base-100: #EBDCF9;
$base-200: #D7BBF1;
$base-300: #B98DE2;
$base-400: #9B62D0;
$base-500: #7C40B5;
$base-600: #62388A;
$base-700: #482D62;
$base-800: #312140;
$base-900: #1F1628;
$base-hover: #341155;
$base-subtle: #C7A9E2;

{
    "color": {
        "base": {
            "value": "#42166B",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F8F2FD",
                "type": "color"
            },
            "100": {
                "value": "#EBDCF9",
                "type": "color"
            },
            "200": {
                "value": "#D7BBF1",
                "type": "color"
            },
            "300": {
                "value": "#B98DE2",
                "type": "color"
            },
            "400": {
                "value": "#9B62D0",
                "type": "color"
            },
            "500": {
                "value": "#7C40B5",
                "type": "color"
            },
            "600": {
                "value": "#62388A",
                "type": "color"
            },
            "700": {
                "value": "#482D62",
                "type": "color"
            },
            "800": {
                "value": "#312140",
                "type": "color"
            },
            "900": {
                "value": "#1F1628",
                "type": "color"
            }
        }
    }
}