What color is #402ECC?

#402ECC is a medium indigo. In RGB it is rgb(64, 46, 204), and in HSL hsl(247, 63%, 49%).

Is #402ECC accessible as text?

On white, #402ECC has a contrast ratio of 8.47:1 (passes WCAG AA for body text); on black it is 2.48:1 (fails). For text placed on #402ECC, use white for the best readability.

What is the closest Tailwind color to #402ECC?

The nearest Tailwind CSS token is indigo-700 (#432DD7).

What colors go well with #402ECC?

#402ECC pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #B9CC2E. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #402ECC below.

Is #402ECC good for buttons?

#402ECC works well for buttons and highlights, but use white text on #402ECC — black text only reaches 2.48:1, below the 4.5:1 needed for normal-size labels.

Is #402ECC the same as CSS mediumblue?

No — #402ECC is not the CSS named color mediumblue, but mediumblue (#0000CD) is the closest CSS named color.

#402ECC Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #402ECC

Not just a swatch — here's how #402ECC works with other colors. Named schemes with #402ECC in its natural role, and a note on why the supporting colors balance it.

Tech Product Signal · 5 colors

Signal #402ECC Surface #14161A Highlight #F4F6F8 Secondary #5B6672 Accent #5D5FEA

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

Berry & Cream Lead · 5 colors

Lead #402ECC Surface #F6E5D8 Anchor #5B2142 Accent #E5C2C9 Secondary #322B2F

Cerulean 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 #402ECC Secondary #6F77AA Support #9D9088 Ink #18140F

Cerulean 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 Cerulean carrying the quiet middle.

Coastal Morning Lead · 5 colors

Lead #402ECC Accent #A5C4C2 Surface #EAD5BF Secondary #9AA0A1 Anchor #22344A

Cerulean opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.

Sunset Warmth Glow · 5 colors

Glow #402ECC Secondary #E86A72 Accent #F6934E Anchor #583B57 Surface #F7E7D7

Cerulean 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 #402ECC 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 16/100

Cool

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

Softness 26/100

Low

Firm and assertive — carries weight and contrast.

Depth 61/100

High

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

Naturalness 0/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 14/100

Very low

Clean and current — no dusty, aged cast.

Luxury 54/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 88/100

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 11/100

Very low

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

Print safety 64/100

High

Prints close, with a slight loss of vibrancy.

Pairs with #402ECC

For UI

For branding

For interior

For fashion

People also use #402ECC with

Ocean Blue Dark Orchid Yellow 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 8.5:1. Use

Subtle surface Use #DCD9F1 for cards and hover fills. Tint 80

Avoid beside #752ECC — 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 #402ECC 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: #402ECC;
  --color-base-rgb: 64 46 204;
  --color-base-oklch: oklch(44.4% 0.227 276.9);
  --color-50: #F3F2FD;
  --color-100: #E0DDF8;
  --color-200: #C3BDF0;
  --color-300: #988FE0;
  --color-400: #7165CD;
  --color-500: #5043B2;
  --color-600: #433A88;
  --color-700: #342E61;
  --color-800: #252140;
  --color-900: #181627;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  cerulean: {
    50: '#F3F2FD',
    100: '#E0DDF8',
    200: '#C3BDF0',
    300: '#988FE0',
    400: '#7165CD',
    500: '#5043B2',
    600: '#433A88',
    700: '#342E61',
    800: '#252140',
    900: '#181627',
  },
}

$base: #402ECC;
$base-ink: #FFFFFF;
$base-50: #F3F2FD;
$base-100: #E0DDF8;
$base-200: #C3BDF0;
$base-300: #988FE0;
$base-400: #7165CD;
$base-500: #5043B2;
$base-600: #433A88;
$base-700: #342E61;
$base-800: #252140;
$base-900: #181627;
$base-hover: #3425A3;
$base-subtle: #CAC5EB;

{
    "color": {
        "base": {
            "value": "#402ECC",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3F2FD",
                "type": "color"
            },
            "100": {
                "value": "#E0DDF8",
                "type": "color"
            },
            "200": {
                "value": "#C3BDF0",
                "type": "color"
            },
            "300": {
                "value": "#988FE0",
                "type": "color"
            },
            "400": {
                "value": "#7165CD",
                "type": "color"
            },
            "500": {
                "value": "#5043B2",
                "type": "color"
            },
            "600": {
                "value": "#433A88",
                "type": "color"
            },
            "700": {
                "value": "#342E61",
                "type": "color"
            },
            "800": {
                "value": "#252140",
                "type": "color"
            },
            "900": {
                "value": "#181627",
                "type": "color"
            }
        }
    }
}

Palettes built on #402ECC

Color Lab

Pairs with #402ECC

UI roles & guardrails

In real applications

Scales

Every model

Export