What color is #2E18BD?

#2E18BD is a medium, vivid indigo. In RGB it is rgb(46, 24, 189), and in HSL hsl(248, 77%, 42%).

Is #2E18BD accessible as text?

On white, #2E18BD has a contrast ratio of 10.60:1 (passes WCAG AA for body text); on black it is 1.98:1 (fails). For text placed on #2E18BD, use white for the best readability.

What is the closest Tailwind color to #2E18BD?

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

What colors go well with #2E18BD?

#2E18BD pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #A8BE19. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #2E18BD below.

Is #2E18BD good for buttons?

#2E18BD works well for buttons and highlights, but use white text on #2E18BD — black text only reaches 1.98:1, below the 4.5:1 needed for normal-size labels.

Is #2E18BD the same as CSS mediumblue?

No — #2E18BD is not the CSS named color mediumblue, but mediumblue (#0000CD) is the closest CSS named color.

#2E18BD Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #2E18BD

Not just a swatch — here's how #2E18BD works with other colors. Named schemes with #2E18BD in its natural role, and a note on why the supporting colors balance it.

Tech Product Signal · 5 colors

Signal #2E18BD Surface #14161A Highlight #F4F6F8 Secondary #5B6672 Accent #4750DA

Klein 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 Klein Blue.

Coastal Morning Lead · 5 colors

Lead #2E18BD Accent #A5C4C2 Surface #EAD5C0 Secondary #9AA0A1 Anchor #21344A

Klein 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 #2E18BD Surface #F6E5D8 Anchor #5B2143 Accent #E5C2C9 Secondary #322B2F

Klein 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 #2E18BD Secondary #5E699B Support #9D8F88 Ink #18140F

Klein 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 Klein Blue carrying the quiet middle.

Sunset Warmth Glow · 5 colors

Glow #2E18BD Secondary #E86A72 Accent #F6924F Anchor #573B58 Surface #F7E7D7

Klein 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 #2E18BD 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 66/100

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 12/100

Very low

Clean and current — no dusty, aged cast.

Luxury 57/100

Moderate

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

Brand distinctiveness 89/100

Very high

Bold and ownable — memorable as a primary brand color.

UI accent fit 52/100

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 #2E18BD

For UI

For branding

For interior

For fashion

People also use #2E18BD with

Royal Blue Dark Violet Apple 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 10.6:1. Use

Subtle surface Use #D5D1F2 for cards and hover fills. Tint 80

Avoid beside #6619BE — 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 #2E18BD 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: #2E18BD;
  --color-base-rgb: 46 24 189;
  --color-base-oklch: oklch(39.2% 0.230 273.7);
  --color-50: #F3F1FE;
  --color-100: #DEDAFB;
  --color-200: #BFB7F5;
  --color-300: #9386E9;
  --color-400: #6A59D9;
  --color-500: #4937BE;
  --color-600: #3E3191;
  --color-700: #312866;
  --color-800: #231E43;
  --color-900: #171429;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  klein-blue: {
    50: '#F3F1FE',
    100: '#DEDAFB',
    200: '#BFB7F5',
    300: '#9386E9',
    400: '#6A59D9',
    500: '#4937BE',
    600: '#3E3191',
    700: '#312866',
    800: '#231E43',
    900: '#171429',
  },
}

$base: #2E18BD;
$base-ink: #FFFFFF;
$base-50: #F3F1FE;
$base-100: #DEDAFB;
$base-200: #BFB7F5;
$base-300: #9386E9;
$base-400: #6A59D9;
$base-500: #4937BE;
$base-600: #3E3191;
$base-700: #312866;
$base-800: #231E43;
$base-900: #171429;
$base-hover: #251498;
$base-subtle: #C0B9ED;

{
    "color": {
        "base": {
            "value": "#2E18BD",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3F1FE",
                "type": "color"
            },
            "100": {
                "value": "#DEDAFB",
                "type": "color"
            },
            "200": {
                "value": "#BFB7F5",
                "type": "color"
            },
            "300": {
                "value": "#9386E9",
                "type": "color"
            },
            "400": {
                "value": "#6A59D9",
                "type": "color"
            },
            "500": {
                "value": "#4937BE",
                "type": "color"
            },
            "600": {
                "value": "#3E3191",
                "type": "color"
            },
            "700": {
                "value": "#312866",
                "type": "color"
            },
            "800": {
                "value": "#231E43",
                "type": "color"
            },
            "900": {
                "value": "#171429",
                "type": "color"
            }
        }
    }
}

Palettes built on #2E18BD

Color Lab

Pairs with #2E18BD

UI roles & guardrails

In real applications

Scales

Every model

Export