What color is #240F8A?

#240F8A is a dark, vivid indigo. In RGB it is rgb(36, 15, 138), and in HSL hsl(250, 80%, 30%).

Is #240F8A accessible as text?

On white, #240F8A has a contrast ratio of 13.90:1 (passes WCAG AA for body text); on black it is 1.51:1 (fails). For text placed on #240F8A, use white for the best readability.

What is the closest Tailwind color to #240F8A?

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

What colors go well with #240F8A?

#240F8A pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #758A0F. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #240F8A below.

Is #240F8A good for buttons?

#240F8A works well for buttons and highlights, but use white text on #240F8A — black text only reaches 1.51:1, below the 4.5:1 needed for normal-size labels.

Is #240F8A the same as CSS midnightblue?

No — #240F8A is not the CSS named color midnightblue, but midnightblue (#191970) is the closest CSS named color.

#240F8A Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #240F8A

Not just a swatch — here's how #240F8A works with other colors. Named schemes with #240F8A in its natural role, and a note on why the supporting colors balance it.

Luxury Packaging Feature · 5 colors

Feature #240F8A Anchor #141210 Accent #DC9758 Secondary #262833 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 #240F8A Anchor #2A2A2E Secondary #6E6E74 Surface #EEE5DB Accent #1D0046

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 #240F8A Accent #A5C4C2 Surface #EAD5BF 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 #240F8A Secondary #7F4534 Surface #EED7C2 Accent #365247 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 #240F8A Secondary #4D547A Support #9D9088 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 #240F8A 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 15/100

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 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 #240F8A

For UI

For branding

For interior

For fashion

People also use #240F8A with

Sapphire Blue Eminence 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 13.9:1. Use

Subtle surface Use #CEC7F0 for cards and hover fills. Tint 80

Avoid beside #4D0F8A — 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 #240F8A 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: #240F8A;
  --color-base-rgb: 36 15 138;
  --color-base-oklch: oklch(31.5% 0.181 276.0);
  --color-50: #F3F1FE;
  --color-100: #DFD9FC;
  --color-200: #C1B6F7;
  --color-300: #9584EB;
  --color-400: #6D57DB;
  --color-500: #4B34C1;
  --color-600: #402F93;
  --color-700: #322768;
  --color-800: #241D44;
  --color-900: #171429;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  phthalo-blue: {
    50: '#F3F1FE',
    100: '#DFD9FC',
    200: '#C1B6F7',
    300: '#9584EB',
    400: '#6D57DB',
    500: '#4B34C1',
    600: '#402F93',
    700: '#322768',
    800: '#241D44',
    900: '#171429',
  },
}

$base: #240F8A;
$base-ink: #FFFFFF;
$base-50: #F3F1FE;
$base-100: #DFD9FC;
$base-200: #C1B6F7;
$base-300: #9584EB;
$base-400: #6D57DB;
$base-500: #4B34C1;
$base-600: #402F93;
$base-700: #322768;
$base-800: #241D44;
$base-900: #171429;
$base-hover: #1D0C6E;
$base-subtle: #B4A9EA;

{
    "color": {
        "base": {
            "value": "#240F8A",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3F1FE",
                "type": "color"
            },
            "100": {
                "value": "#DFD9FC",
                "type": "color"
            },
            "200": {
                "value": "#C1B6F7",
                "type": "color"
            },
            "300": {
                "value": "#9584EB",
                "type": "color"
            },
            "400": {
                "value": "#6D57DB",
                "type": "color"
            },
            "500": {
                "value": "#4B34C1",
                "type": "color"
            },
            "600": {
                "value": "#402F93",
                "type": "color"
            },
            "700": {
                "value": "#322768",
                "type": "color"
            },
            "800": {
                "value": "#241D44",
                "type": "color"
            },
            "900": {
                "value": "#171429",
                "type": "color"
            }
        }
    }
}

Palettes built on #240F8A

Color Lab

Pairs with #240F8A

UI roles & guardrails

In real applications

Scales

Every model

Export