What color is #18166E?

#18166E is a dark blue-violet. In RGB it is rgb(24, 22, 110), and in HSL hsl(241, 67%, 26%).

Is #18166E accessible as text?

On white, #18166E 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 #18166E, use white for the best readability.

What is the closest Tailwind color to #18166E?

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

What colors go well with #18166E?

#18166E pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #6D6F16. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #18166E below.

Is #18166E good for buttons?

#18166E works well for buttons and highlights, but use white text on #18166E — black text only reaches 1.38:1, below the 4.5:1 needed for normal-size labels.

Is #18166E the same as CSS midnightblue?

No — #18166E is not the CSS named color midnightblue, but midnightblue (#191970) is the closest CSS named color.

#18166E Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #18166E

Not just a swatch — here's how #18166E works with other colors. Named schemes with #18166E in its natural role, and a note on why the supporting colors balance it.

Luxury Packaging Feature · 5 colors

Feature #18166E Anchor #141210 Accent #DC9659 Secondary #252833 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 #18166E Anchor #2A2A2E Secondary #6E6E74 Surface #EEE5DB Accent #110034

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 #18166E Accent #A5C4C2 Surface #EAD5C0 Secondary #9AA0A1 Anchor #21344A

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 #18166E Secondary #7F4535 Surface #EED7C2 Accent #365247 Anchor #582239

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 #18166E Secondary #444C69 Support #9D8F88 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 #18166E 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 19/100

Cool

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

Softness 23/100

Low

Firm and assertive — carries weight and contrast.

Depth 74/100

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 27/100

Low

A faint retro warmth without tipping into sepia.

Luxury 74/100

High

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

Brand distinctiveness 56/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 34/100

Low

Workable accent with care around contrast.

Surface fit 23/100

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 #18166E

For UI

For branding

For interior

For fashion

People also use #18166E with

Lapis Lazuli Indigo Dark Olive Green Gainsboro Prussian Blue

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 #C8C7EB for cards and hover fills. Tint 80

Avoid beside #35166F — 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 #18166E 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: #18166E;
  --color-base-rgb: 24 22 110;
  --color-base-oklch: oklch(28.1% 0.144 273.0);
  --color-50: #F2F2FD;
  --color-100: #DDDCF9;
  --color-200: #BCBBF1;
  --color-300: #8E8CE3;
  --color-400: #6362D0;
  --color-500: #413FB5;
  --color-600: #39378B;
  --color-700: #2D2C62;
  --color-800: #212041;
  --color-900: #161628;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  midnight-blue: {
    50: '#F2F2FD',
    100: '#DDDCF9',
    200: '#BCBBF1',
    300: '#8E8CE3',
    400: '#6362D0',
    500: '#413FB5',
    600: '#39378B',
    700: '#2D2C62',
    800: '#212041',
    900: '#161628',
  },
}

$base: #18166E;
$base-ink: #FFFFFF;
$base-50: #F2F2FD;
$base-100: #DDDCF9;
$base-200: #BCBBF1;
$base-300: #8E8CE3;
$base-400: #6362D0;
$base-500: #413FB5;
$base-600: #39378B;
$base-700: #2D2C62;
$base-800: #212041;
$base-900: #161628;
$base-hover: #131259;
$base-subtle: #ABAAE3;

{
    "color": {
        "base": {
            "value": "#18166E",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F2F2FD",
                "type": "color"
            },
            "100": {
                "value": "#DDDCF9",
                "type": "color"
            },
            "200": {
                "value": "#BCBBF1",
                "type": "color"
            },
            "300": {
                "value": "#8E8CE3",
                "type": "color"
            },
            "400": {
                "value": "#6362D0",
                "type": "color"
            },
            "500": {
                "value": "#413FB5",
                "type": "color"
            },
            "600": {
                "value": "#39378B",
                "type": "color"
            },
            "700": {
                "value": "#2D2C62",
                "type": "color"
            },
            "800": {
                "value": "#212041",
                "type": "color"
            },
            "900": {
                "value": "#161628",
                "type": "color"
            }
        }
    }
}

Palettes built on #18166E

Color Lab

Pairs with #18166E

UI roles & guardrails

In real applications

Scales

Every model

Export