What color is #3018A7?

#3018A7 is a dark, vivid indigo. In RGB it is rgb(48, 24, 167), and in HSL hsl(250, 75%, 37%).

Is #3018A7 accessible as text?

On white, #3018A7 has a contrast ratio of 11.57:1 (passes WCAG AA for body text); on black it is 1.81:1 (fails). For text placed on #3018A7, use white for the best readability.

What is the closest Tailwind color to #3018A7?

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

What colors go well with #3018A7?

#3018A7 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #8EA518. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #3018A7 below.

Is #3018A7 good for buttons?

#3018A7 works well for buttons and highlights, but use white text on #3018A7 — black text only reaches 1.81:1, below the 4.5:1 needed for normal-size labels.

Is #3018A7 the same as CSS mediumblue?

No — #3018A7 is not the CSS named color mediumblue, but mediumblue (#0000CD) is the closest CSS named color.

#3018A7 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #3018A7

Not just a swatch — here's how #3018A7 works with other colors. Named schemes with #3018A7 in its natural role, and a note on why the supporting colors balance it.

Luxury Packaging Feature · 5 colors

Feature #3018A7 Anchor #141210 Accent #DC9758 Secondary #262833 Surface #F3ECE3

Klein 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.

Moody Editorial Color · 5 colors

Color #3018A7 Anchor #2A2A2E Secondary #6E6E74 Surface #EEE5DB Accent #2A005C

Klein 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 Klein Blue.

Minimal Editorial Surface · 5 colors

Surface #F8F4EF Accent #3018A7 Secondary #5B628E Support #9D9088 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.

Coastal Morning Lead · 5 colors

Lead #3018A7 Accent #A5C4C2 Surface #EAD5BF Secondary #9AA0A1 Anchor #22344A

Klein Blue 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 #3018A7 Secondary #E86A72 Accent #F6924E Anchor #583B57 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 #3018A7 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 24/100

Low

Firm and assertive — carries weight and contrast.

Depth 68/100

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 18/100

Very low

Clean and current — no dusty, aged cast.

Luxury 61/100

High

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

Brand distinctiveness 79/100

High

Bold and ownable — memorable as a primary brand color.

UI accent fit 53/100

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 68/100

High

Prints close, with a slight loss of vibrancy.

Pairs with #3018A7

For UI

For branding

For interior

For fashion

People also use #3018A7 with

Denim Blue Mauveine 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 11.6:1. Use

Subtle surface Use #D3CEF0 for cards and hover fills. Tint 80

Avoid beside #5E18A5 — 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 #3018A7 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: #3018A7;
  --color-base-rgb: 48 24 167;
  --color-base-oklch: oklch(36.7% 0.205 276.8);
  --color-50: #F3F1FE;
  --color-100: #E0DAFB;
  --color-200: #C2B8F5;
  --color-300: #9787E8;
  --color-400: #705BD7;
  --color-500: #4E38BC;
  --color-600: #423290;
  --color-700: #332966;
  --color-800: #241E42;
  --color-900: #181429;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  klein-blue: {
    50: '#F3F1FE',
    100: '#E0DAFB',
    200: '#C2B8F5',
    300: '#9787E8',
    400: '#705BD7',
    500: '#4E38BC',
    600: '#423290',
    700: '#332966',
    800: '#241E42',
    900: '#181429',
  },
}

$base: #3018A7;
$base-ink: #FFFFFF;
$base-50: #F3F1FE;
$base-100: #E0DAFB;
$base-200: #C2B8F5;
$base-300: #9787E8;
$base-400: #705BD7;
$base-500: #4E38BC;
$base-600: #423290;
$base-700: #332966;
$base-800: #241E42;
$base-900: #181429;
$base-hover: #261384;
$base-subtle: #BCB3EA;

{
    "color": {
        "base": {
            "value": "#3018A7",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3F1FE",
                "type": "color"
            },
            "100": {
                "value": "#E0DAFB",
                "type": "color"
            },
            "200": {
                "value": "#C2B8F5",
                "type": "color"
            },
            "300": {
                "value": "#9787E8",
                "type": "color"
            },
            "400": {
                "value": "#705BD7",
                "type": "color"
            },
            "500": {
                "value": "#4E38BC",
                "type": "color"
            },
            "600": {
                "value": "#423290",
                "type": "color"
            },
            "700": {
                "value": "#332966",
                "type": "color"
            },
            "800": {
                "value": "#241E42",
                "type": "color"
            },
            "900": {
                "value": "#181429",
                "type": "color"
            }
        }
    }
}

Palettes built on #3018A7

Color Lab

Pairs with #3018A7

UI roles & guardrails

In real applications

Scales

Every model

Export