What color is #321CC4?

#321CC4 is a medium, vivid indigo. In RGB it is rgb(50, 28, 196), and in HSL hsl(248, 75%, 44%).

Is #321CC4 accessible as text?

On white, #321CC4 has a contrast ratio of 10.01:1 (passes WCAG AA for body text); on black it is 2.10:1 (fails). For text placed on #321CC4, use white for the best readability.

What is the closest Tailwind color to #321CC4?

The nearest Tailwind CSS token is indigo-800 (#372AAC).

What colors go well with #321CC4?

#321CC4 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #AEC41C. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #321CC4 below.

Is #321CC4 good for buttons?

#321CC4 works well for buttons and highlights, but use white text on #321CC4 — black text only reaches 2.10:1, below the 4.5:1 needed for normal-size labels.

Is #321CC4 the same as CSS mediumblue?

No — #321CC4 is not the CSS named color mediumblue, but mediumblue (#0000CD) is the closest CSS named color.

#321CC4 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #321CC4

Not just a swatch — here's how #321CC4 works with other colors. Named schemes with #321CC4 in its natural role, and a note on why the supporting colors balance it.

Tech Product Signal · 5 colors

Signal #321CC4 Surface #14161A Highlight #F4F6F8 Secondary #5B6672 Accent #4C54E1

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

Coastal Morning Lead · 5 colors

Lead #321CC4 Accent #A5C4C2 Surface #EAD5C0 Secondary #9AA0A1 Anchor #21344A

Medium Blue 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 #321CC4 Surface #F6E5D8 Anchor #5B2143 Accent #E5C2C9 Secondary #322B2F

Medium Blue 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 #321CC4 Secondary #626DA1 Support #9D9088 Ink #18140F

Medium 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 Medium Blue carrying the quiet middle.

Sunset Warmth Glow · 5 colors

Glow #321CC4 Secondary #E86A72 Accent #F6924F Anchor #573B58 Surface #F7E7D7

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

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Color Lab

How #321CC4 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 23/100

Low

Firm and assertive — carries weight and contrast.

Depth 65/100

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 11/100

Very low

Clean and current — no dusty, aged cast.

Luxury 56/100

Moderate

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

Brand distinctiveness 91/100

Very high

Bold and ownable — memorable as a primary brand color.

UI accent fit 54/100

Moderate

Workable accent with care around contrast.

Surface fit 14/100

Very low

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

Print safety 62/100

High

Prints close, with a slight loss of vibrancy.

Pairs with #321CC4

For UI

For branding

For interior

For fashion

People also use #321CC4 with

True Blue Dark Violet Peridot 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 10.0:1. Use

Subtle surface Use #D7D3F2 for cards and hover fills. Tint 80

Avoid beside #6B1CC4 — 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 #321CC4 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: #321CC4;
  --color-base-rgb: 50 28 196;
  --color-base-oklch: oklch(40.7% 0.235 274.2);
  --color-50: #F3F1FE;
  --color-100: #DFDAFB;
  --color-200: #C0B8F5;
  --color-300: #9487E8;
  --color-400: #6B5BD7;
  --color-500: #4A38BC;
  --color-600: #3F3290;
  --color-700: #312966;
  --color-800: #231E42;
  --color-900: #171429;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  medium-blue: {
    50: '#F3F1FE',
    100: '#DFDAFB',
    200: '#C0B8F5',
    300: '#9487E8',
    400: '#6B5BD7',
    500: '#4A38BC',
    600: '#3F3290',
    700: '#312966',
    800: '#231E42',
    900: '#171429',
  },
}

$base: #321CC4;
$base-ink: #FFFFFF;
$base-50: #F3F1FE;
$base-100: #DFDAFB;
$base-200: #C0B8F5;
$base-300: #9487E8;
$base-400: #6B5BD7;
$base-500: #4A38BC;
$base-600: #3F3290;
$base-700: #312966;
$base-800: #231E42;
$base-900: #171429;
$base-hover: #28169D;
$base-subtle: #C2BCED;

{
    "color": {
        "base": {
            "value": "#321CC4",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3F1FE",
                "type": "color"
            },
            "100": {
                "value": "#DFDAFB",
                "type": "color"
            },
            "200": {
                "value": "#C0B8F5",
                "type": "color"
            },
            "300": {
                "value": "#9487E8",
                "type": "color"
            },
            "400": {
                "value": "#6B5BD7",
                "type": "color"
            },
            "500": {
                "value": "#4A38BC",
                "type": "color"
            },
            "600": {
                "value": "#3F3290",
                "type": "color"
            },
            "700": {
                "value": "#312966",
                "type": "color"
            },
            "800": {
                "value": "#231E42",
                "type": "color"
            },
            "900": {
                "value": "#171429",
                "type": "color"
            }
        }
    }
}

Palettes built on #321CC4

Color Lab

Pairs with #321CC4

UI roles & guardrails

In real applications

Scales

Every model

Export