What color is #18168B?

#18168B is a dark, vivid blue. In RGB it is rgb(24, 22, 139), and in HSL hsl(241, 73%, 32%).

Is #18168B accessible as text?

On white, #18168B has a contrast ratio of 13.76:1 (passes WCAG AA for body text); on black it is 1.53:1 (fails). For text placed on #18168B, use white for the best readability.

What is the closest Tailwind color to #18168B?

The nearest Tailwind CSS token is indigo-900 (#312C85).

What colors go well with #18168B?

#18168B pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #8B8D16. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #18168B below.

Is #18168B good for buttons?

#18168B works well for buttons and highlights, but use white text on #18168B — black text only reaches 1.53:1, below the 4.5:1 needed for normal-size labels.

Is #18168B the same as CSS darkblue?

No — #18168B is not the CSS named color darkblue, but darkblue (#00008B) is the closest CSS named color.

#18168B Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #18168B

Not just a swatch — here's how #18168B works with other colors. Named schemes with #18168B in its natural role, and a note on why the supporting colors balance it.

Luxury Packaging Feature · 5 colors

Feature #18168B Anchor #141210 Accent #DC9659 Secondary #252933 Surface #F3ECE3

Phthalo 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 #18168B Anchor #2A2A2E Secondary #6E6E74 Surface #EEE5DB Accent #190049

Phthalo 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 Phthalo Blue.

Coastal Morning Lead · 5 colors

Lead #18168B Accent #A5C4C2 Surface #EAD5C0 Secondary #9AA0A1 Anchor #21344A

Phthalo 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 #18168B Secondary #7F4535 Surface #EED7C2 Accent #365246 Anchor #582239

Phthalo 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 #18168B Secondary #49557B Support #9D8F88 Ink #18140F

Phthalo 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 Phthalo Blue carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #18168B 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 12/100

Cool

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

Softness 22/100

Low

Firm and assertive — carries weight and contrast.

Depth 72/100

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 21/100

Low

Clean and current — no dusty, aged cast.

Luxury 67/100

High

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

Brand distinctiveness 70/100

High

Bold and ownable — memorable as a primary brand color.

UI accent fit 42/100

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 69/100

High

Prints close, with a slight loss of vibrancy.

Pairs with #18168B

For UI

For branding

For interior

For fashion

People also use #18168B with

Lapis Lazuli Indigo Olive 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 13.8:1. Use

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

Avoid beside #40168D — 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 #18168B 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: #18168B;
  --color-base-rgb: 24 22 139;
  --color-base-oklch: oklch(31.6% 0.181 270.3);
  --color-50: #F1F1FD;
  --color-100: #DBDBFA;
  --color-200: #BAB9F4;
  --color-300: #8A88E7;
  --color-400: #5F5DD5;
  --color-500: #3C3ABB;
  --color-600: #35338E;
  --color-700: #2B2A65;
  --color-800: #1F1F42;
  --color-900: #151528;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  phthalo-blue: {
    50: '#F1F1FD',
    100: '#DBDBFA',
    200: '#BAB9F4',
    300: '#8A88E7',
    400: '#5F5DD5',
    500: '#3C3ABB',
    600: '#35338E',
    700: '#2B2A65',
    800: '#1F1F42',
    900: '#151528',
  },
}

$base: #18168B;
$base-ink: #FFFFFF;
$base-50: #F1F1FD;
$base-100: #DBDBFA;
$base-200: #BAB9F4;
$base-300: #8A88E7;
$base-400: #5F5DD5;
$base-500: #3C3ABB;
$base-600: #35338E;
$base-700: #2B2A65;
$base-800: #1F1F42;
$base-900: #151528;
$base-hover: #131271;
$base-subtle: #AFAEE8;

{
    "color": {
        "base": {
            "value": "#18168B",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1F1FD",
                "type": "color"
            },
            "100": {
                "value": "#DBDBFA",
                "type": "color"
            },
            "200": {
                "value": "#BAB9F4",
                "type": "color"
            },
            "300": {
                "value": "#8A88E7",
                "type": "color"
            },
            "400": {
                "value": "#5F5DD5",
                "type": "color"
            },
            "500": {
                "value": "#3C3ABB",
                "type": "color"
            },
            "600": {
                "value": "#35338E",
                "type": "color"
            },
            "700": {
                "value": "#2B2A65",
                "type": "color"
            },
            "800": {
                "value": "#1F1F42",
                "type": "color"
            },
            "900": {
                "value": "#151528",
                "type": "color"
            }
        }
    }
}

Palettes built on #18168B

Color Lab

Pairs with #18168B

UI roles & guardrails

In real applications

Scales

Every model

Export