What color is #4040E7?

#4040E7 is a medium, vivid blue-violet. In RGB it is rgb(64, 64, 231), and in HSL hsl(240, 78%, 58%).

Is #4040E7 accessible as text?

On white, #4040E7 has a contrast ratio of 6.76:1 (passes WCAG AA for body text); on black it is 3.11:1 (fails). For text placed on #4040E7, use white for the best readability.

What is the closest Tailwind color to #4040E7?

The nearest Tailwind CSS token is indigo-600 (#4F39F6).

What colors go well with #4040E7?

#4040E7 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #E7E740. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #4040E7 below.

Is #4040E7 good for buttons?

#4040E7 works well for buttons and highlights, but use white text on #4040E7 — black text only reaches 3.11:1, below the 4.5:1 needed for normal-size labels.

Is #4040E7 the same as CSS royalblue?

No — #4040E7 is not the CSS named color royalblue, but royalblue (#4169E1) is the closest CSS named color.

#4040E7 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #4040E7

Not just a swatch — here's how #4040E7 works with other colors. Named schemes with #4040E7 in its natural role, and a note on why the supporting colors balance it.

Tech Product Signal · 5 colors

Signal #4040E7 Surface #14161A Highlight #F4F6F8 Secondary #5B6672 Accent #5F70FF

Han Purple is the vivid signal in this product UI — on a near-black surface with cool white, a slate grey and a lighter tint of Han Purple.

Coastal Morning Lead · 5 colors

Lead #4040E7 Accent #A5C4C2 Surface #EAD5C0 Secondary #9AA0A1 Anchor #21344A

Han Purple 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 #4040E7 Surface #F6E5D8 Anchor #5B2143 Accent #E5C2C9 Secondary #322B2F

Han Purple 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 #4040E7 Secondary #7987BE Support #9D8F88 Ink #18140F

Han Purple 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 Han Purple carrying the quiet middle.

Sunset Warmth Glow · 5 colors

Glow #4040E7 Secondary #E86A73 Accent #F6924F Anchor #573B58 Surface #F7E7D7

Han Purple glows at the center of this sunset palette, joined by coral and gold, deepened by a plum anchor and cooled with cream.

Build a working theme in the generator →

Color Lab

How #4040E7 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 14/100

Cool

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

Softness 27/100

Low

Firm and assertive — carries weight and contrast.

Depth 56/100

Moderate

Mid depth — usable as an accent or a muted ground.

Naturalness 0/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 10/100

Very low

Clean and current — no dusty, aged cast.

Luxury 49/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 93/100

Very high

Bold and ownable — memorable as a primary brand color.

UI accent fit 65/100

High

Strong interactive accent — visible and can carry a legible label.

Surface fit 8/100

Very low

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

Print safety 60/100

High

Prints close, with a slight loss of vibrancy.

Pairs with #4040E7

For UI

For branding

For interior

For fashion

People also use #4040E7 with

Picton Blue Dark Orchid Pear Gainsboro Prussian Blue

UI roles & guardrails

Primary action Safe as a filled button with white label. AA

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 6.8:1. Use

Subtle surface Use #DEDEF6 for cards and hover fills. Tint 80

Avoid beside #7840E7 — 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 #4040E7 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: #4040E7;
  --color-base-rgb: 64 64 231;
  --color-base-oklch: oklch(49.5% 0.242 273.1);
  --color-50: #F1F1FE;
  --color-100: #DADAFB;
  --color-200: #B6B6F6;
  --color-300: #8585EA;
  --color-400: #5858DA;
  --color-500: #3636BF;
  --color-600: #303091;
  --color-700: #282867;
  --color-800: #1E1E43;
  --color-900: #141429;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  han-purple: {
    50: '#F1F1FE',
    100: '#DADAFB',
    200: '#B6B6F6',
    300: '#8585EA',
    400: '#5858DA',
    500: '#3636BF',
    600: '#303091',
    700: '#282867',
    800: '#1E1E43',
    900: '#141429',
  },
}

$base: #4040E7;
$base-ink: #FFFFFF;
$base-50: #F1F1FE;
$base-100: #DADAFB;
$base-200: #B6B6F6;
$base-300: #8585EA;
$base-400: #5858DA;
$base-500: #3636BF;
$base-600: #303091;
$base-700: #282867;
$base-800: #1E1E43;
$base-900: #141429;
$base-hover: #1A1AD3;
$base-subtle: #CCCCF2;

{
    "color": {
        "base": {
            "value": "#4040E7",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1F1FE",
                "type": "color"
            },
            "100": {
                "value": "#DADAFB",
                "type": "color"
            },
            "200": {
                "value": "#B6B6F6",
                "type": "color"
            },
            "300": {
                "value": "#8585EA",
                "type": "color"
            },
            "400": {
                "value": "#5858DA",
                "type": "color"
            },
            "500": {
                "value": "#3636BF",
                "type": "color"
            },
            "600": {
                "value": "#303091",
                "type": "color"
            },
            "700": {
                "value": "#282867",
                "type": "color"
            },
            "800": {
                "value": "#1E1E43",
                "type": "color"
            },
            "900": {
                "value": "#141429",
                "type": "color"
            }
        }
    }
}

Palettes built on #4040E7

Color Lab

Pairs with #4040E7

UI roles & guardrails

In real applications

Scales

Every model

Export