What color is #2D21CD?

#2D21CD is a medium, vivid blue. In RGB it is rgb(45, 33, 205), and in HSL hsl(244, 72%, 47%).

Is #2D21CD accessible as text?

On white, #2D21CD has a contrast ratio of 9.50:1 (passes WCAG AA for body text); on black it is 2.21:1 (fails). For text placed on #2D21CD, use white for the best readability.

What is the closest Tailwind color to #2D21CD?

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

What colors go well with #2D21CD?

#2D21CD pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #C3CE22. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #2D21CD below.

Is #2D21CD good for buttons?

#2D21CD works well for buttons and highlights, but use white text on #2D21CD — black text only reaches 2.21:1, below the 4.5:1 needed for normal-size labels.

Is #2D21CD the same as CSS mediumblue?

No — #2D21CD is not the CSS named color mediumblue, but mediumblue (#0000CD) is the closest CSS named color.

#2D21CD Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #2D21CD

Not just a swatch — here's how #2D21CD works with other colors. Named schemes with #2D21CD in its natural role, and a note on why the supporting colors balance it.

Tech Product Signal · 5 colors

Signal #2D21CD Surface #14161A Highlight #F4F6F8 Secondary #5B6672 Accent #4758EA

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 #2D21CD 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 #2D21CD 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 #2D21CD Secondary #6271A6 Support #9D8F88 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 #2D21CD Secondary #E86A73 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.

Build a working theme in the generator →

Color Lab

How #2D21CD 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 13/100

Cool

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

Softness 23/100

Low

Firm and assertive — carries weight and contrast.

Depth 64/100

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 9/100

Very low

Clean and current — no dusty, aged cast.

Luxury 54/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 94/100

Very high

Bold and ownable — memorable as a primary brand color.

UI accent fit 53/100

Moderate

Workable accent with care around contrast.

Surface fit 13/100

Very low

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

Print safety 59/100

Moderate

Prints close, with a slight loss of vibrancy.

Pairs with #2D21CD

For UI

For branding

For interior

For fashion

People also use #2D21CD with

Dodger Blue Dark Violet 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 9.5:1. Use

Subtle surface Use #D8D6F2 for cards and hover fills. Tint 80

Avoid beside #6722CE — 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 #2D21CD 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: #2D21CD;
  --color-base-rgb: 45 33 205;
  --color-base-oklch: oklch(41.9% 0.243 271.7);
  --color-50: #F2F1FD;
  --color-100: #DDDBFA;
  --color-200: #BDB9F3;
  --color-300: #8F89E6;
  --color-400: #655DD5;
  --color-500: #433BBA;
  --color-600: #3A348E;
  --color-700: #2E2A64;
  --color-800: #211F42;
  --color-900: #161528;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  medium-blue: {
    50: '#F2F1FD',
    100: '#DDDBFA',
    200: '#BDB9F3',
    300: '#8F89E6',
    400: '#655DD5',
    500: '#433BBA',
    600: '#3A348E',
    700: '#2E2A64',
    800: '#211F42',
    900: '#161528',
  },
}

$base: #2D21CD;
$base-ink: #FFFFFF;
$base-50: #F2F1FD;
$base-100: #DDDBFA;
$base-200: #BDB9F3;
$base-300: #8F89E6;
$base-400: #655DD5;
$base-500: #433BBA;
$base-600: #3A348E;
$base-700: #2E2A64;
$base-800: #211F42;
$base-900: #161528;
$base-hover: #241BA5;
$base-subtle: #C3C0ED;

{
    "color": {
        "base": {
            "value": "#2D21CD",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F2F1FD",
                "type": "color"
            },
            "100": {
                "value": "#DDDBFA",
                "type": "color"
            },
            "200": {
                "value": "#BDB9F3",
                "type": "color"
            },
            "300": {
                "value": "#8F89E6",
                "type": "color"
            },
            "400": {
                "value": "#655DD5",
                "type": "color"
            },
            "500": {
                "value": "#433BBA",
                "type": "color"
            },
            "600": {
                "value": "#3A348E",
                "type": "color"
            },
            "700": {
                "value": "#2E2A64",
                "type": "color"
            },
            "800": {
                "value": "#211F42",
                "type": "color"
            },
            "900": {
                "value": "#161528",
                "type": "color"
            }
        }
    }
}

Palettes built on #2D21CD

Color Lab

Pairs with #2D21CD

UI roles & guardrails

In real applications

Scales

Every model

Export