What color is #2102BB?

#2102BB is a dark, vivid indigo. In RGB it is rgb(33, 2, 187), and in HSL hsl(250, 98%, 37%).

Is #2102BB accessible as text?

On white, #2102BB has a contrast ratio of 11.73:1 (passes WCAG AA for body text); on black it is 1.79:1 (fails). For text placed on #2102BB, use white for the best readability.

What is the closest Tailwind color to #2102BB?

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

What colors go well with #2102BB?

#2102BB pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #9CBB02. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #2102BB below.

Is #2102BB good for buttons?

#2102BB works well for buttons and highlights, but use white text on #2102BB — black text only reaches 1.79:1, below the 4.5:1 needed for normal-size labels.

Is #2102BB the same as CSS mediumblue?

No — #2102BB is not the CSS named color mediumblue, but mediumblue (#0000CD) is the closest CSS named color.

#2102BB Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #2102BB

Not just a swatch — here's how #2102BB works with other colors. Named schemes with #2102BB in its natural role, and a note on why the supporting colors balance it.

Luxury Packaging Feature · 5 colors

Feature #2102BB Anchor #141210 Accent #DC9659 Secondary #252933 Surface #F3ECE3

Medium 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.

Tech Product Signal · 5 colors

Signal #2102BB Surface #14161A Highlight #F4F6F8 Secondary #5B6672 Accent #3749D8

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.

Moody Editorial Color · 5 colors

Color #2102BB Anchor #2A2A2E Secondary #6E6E74 Surface #EEE5DB Accent #27006A

Medium 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 Medium Blue.

Coastal Morning Lead · 5 colors

Lead #2102BB 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.

Minimal Editorial Surface · 5 colors

Surface #F8F4EF Accent #2102BB Secondary #536396 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.

Build a working theme in the generator →

Color Lab

How #2102BB 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 12/100

Cool

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

Softness 21/100

Low

Firm and assertive — carries weight and contrast.

Depth 69/100

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 58/100

Moderate

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

Brand distinctiveness 93/100

Very high

Bold and ownable — memorable as a primary brand color.

UI accent fit 43/100

Moderate

Workable accent with care around contrast.

Surface fit 16/100

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 #2102BB

For UI

For branding

For interior

For fashion

People also use #2102BB with

Neon Blue Dark Violet Citron 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 11.7:1. Use

Subtle surface Use #D0C8F6 for cards and hover fills. Tint 80

Avoid beside #5E02BB — 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 #2102BB at work across the surfaces designers actually ship.

Website / UI

Northwind Sign up

Build faster.

A working theme, generated in seconds.

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: #2102BB;
  --color-base-rgb: 33 2 187;
  --color-base-oklch: oklch(37.0% 0.240 270.2);
  --color-50: #F3F0FE;
  --color-100: #DED8FD;
  --color-200: #BDB1FC;
  --color-300: #8D78F7;
  --color-400: #6348EA;
  --color-500: #4124D1;
  --color-600: #38249E;
  --color-700: #2D206F;
  --color-800: #211948;
  --color-900: #16112C;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  medium-blue: {
    50: '#F3F0FE',
    100: '#DED8FD',
    200: '#BDB1FC',
    300: '#8D78F7',
    400: '#6348EA',
    500: '#4124D1',
    600: '#38249E',
    700: '#2D206F',
    800: '#211948',
    900: '#16112C',
  },
}

$base: #2102BB;
$base-ink: #FFFFFF;
$base-50: #F3F0FE;
$base-100: #DED8FD;
$base-200: #BDB1FC;
$base-300: #8D78F7;
$base-400: #6348EA;
$base-500: #4124D1;
$base-600: #38249E;
$base-700: #2D206F;
$base-800: #211948;
$base-900: #16112C;
$base-hover: #1A0295;
$base-subtle: #B7ABF3;

{
    "color": {
        "base": {
            "value": "#2102BB",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3F0FE",
                "type": "color"
            },
            "100": {
                "value": "#DED8FD",
                "type": "color"
            },
            "200": {
                "value": "#BDB1FC",
                "type": "color"
            },
            "300": {
                "value": "#8D78F7",
                "type": "color"
            },
            "400": {
                "value": "#6348EA",
                "type": "color"
            },
            "500": {
                "value": "#4124D1",
                "type": "color"
            },
            "600": {
                "value": "#38249E",
                "type": "color"
            },
            "700": {
                "value": "#2D206F",
                "type": "color"
            },
            "800": {
                "value": "#211948",
                "type": "color"
            },
            "900": {
                "value": "#16112C",
                "type": "color"
            }
        }
    }
}

Palettes built on #2102BB

Color Lab

Pairs with #2102BB

UI roles & guardrails

In real applications

Scales

Every model

Export