What color is #181883?

#181883 is a dark blue. In RGB it is rgb(24, 24, 131), and in HSL hsl(240, 69%, 30%).

Is #181883 accessible as text?

On white, #181883 has a contrast ratio of 14.03:1 (passes WCAG AA for body text); on black it is 1.50:1 (fails). For text placed on #181883, use white for the best readability.

What is the closest Tailwind color to #181883?

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

What colors go well with #181883?

#181883 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #818118. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #181883 below.

Is #181883 good for buttons?

#181883 works well for buttons and highlights, but use white text on #181883 — black text only reaches 1.50:1, below the 4.5:1 needed for normal-size labels.

Is #181883 the same as CSS midnightblue?

No — #181883 is not the CSS named color midnightblue, but midnightblue (#191970) is the closest CSS named color.

#181883 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #181883

Not just a swatch — here's how #181883 works with other colors. Named schemes with #181883 in its natural role, and a note on why the supporting colors balance it.

Luxury Packaging Feature · 5 colors

Feature #181883 Anchor #141210 Accent #DC9659 Secondary #252833 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 #181883 Anchor #2A2A2E Secondary #6E6E74 Surface #EEE5DB Accent #170043

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 #181883 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 #181883 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 #181883 Secondary #485376 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.

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Color Lab

How #181883 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 23/100

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 23/100

Low

Clean and current — no dusty, aged cast.

Luxury 69/100

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 41/100

Moderate

Workable accent with care around contrast.

Surface fit 20/100

Very low

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

Print safety 71/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #181883

For UI

For branding

For interior

For fashion

People also use #181883 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 14.0:1. Use

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

Avoid beside #3B1881 — 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 #181883 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: #181883;
  --color-base-rgb: 24 24 131;
  --color-base-oklch: oklch(30.9% 0.169 270.7);
  --color-50: #F2F2FD;
  --color-100: #DCDCF9;
  --color-200: #BABAF2;
  --color-300: #8B8BE4;
  --color-400: #6060D2;
  --color-500: #3E3EB7;
  --color-600: #36368C;
  --color-700: #2C2C63;
  --color-800: #202041;
  --color-900: #151528;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  phthalo-blue: {
    50: '#F2F2FD',
    100: '#DCDCF9',
    200: '#BABAF2',
    300: '#8B8BE4',
    400: '#6060D2',
    500: '#3E3EB7',
    600: '#36368C',
    700: '#2C2C63',
    800: '#202041',
    900: '#151528',
  },
}

$base: #181883;
$base-ink: #FFFFFF;
$base-50: #F2F2FD;
$base-100: #DCDCF9;
$base-200: #BABAF2;
$base-300: #8B8BE4;
$base-400: #6060D2;
$base-500: #3E3EB7;
$base-600: #36368C;
$base-700: #2C2C63;
$base-800: #202041;
$base-900: #151528;
$base-hover: #131367;
$base-subtle: #ADADE6;

{
    "color": {
        "base": {
            "value": "#181883",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F2F2FD",
                "type": "color"
            },
            "100": {
                "value": "#DCDCF9",
                "type": "color"
            },
            "200": {
                "value": "#BABAF2",
                "type": "color"
            },
            "300": {
                "value": "#8B8BE4",
                "type": "color"
            },
            "400": {
                "value": "#6060D2",
                "type": "color"
            },
            "500": {
                "value": "#3E3EB7",
                "type": "color"
            },
            "600": {
                "value": "#36368C",
                "type": "color"
            },
            "700": {
                "value": "#2C2C63",
                "type": "color"
            },
            "800": {
                "value": "#202041",
                "type": "color"
            },
            "900": {
                "value": "#151528",
                "type": "color"
            }
        }
    }
}

Palettes built on #181883

Color Lab

Pairs with #181883

UI roles & guardrails

In real applications

Scales

Every model

Export