What color is #1105BF?

#1105BF is a dark, vivid blue. In RGB it is rgb(17, 5, 191), and in HSL hsl(244, 95%, 38%).

Is #1105BF accessible as text?

On white, #1105BF has a contrast ratio of 11.68:1 (passes WCAG AA for body text); on black it is 1.80:1 (fails). For text placed on #1105BF, use white for the best readability.

What is the closest Tailwind color to #1105BF?

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

What colors go well with #1105BF?

#1105BF pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #B1BD05. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #1105BF below.

Is #1105BF good for buttons?

#1105BF works well for buttons and highlights, but use white text on #1105BF — black text only reaches 1.80:1, below the 4.5:1 needed for normal-size labels.

Is #1105BF the same as CSS mediumblue?

No — #1105BF is not the CSS named color mediumblue, but mediumblue (#0000CD) is the closest CSS named color.

#1105BF Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #1105BF

Not just a swatch — here's how #1105BF works with other colors. Named schemes with #1105BF in its natural role, and a note on why the supporting colors balance it.

Luxury Packaging Feature · 5 colors

Feature #1105BF Anchor #141210 Accent #DD965A Secondary #242933 Surface #F4ECE3

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 #1105BF Surface #14161A Highlight #F4F6F8 Secondary #5B6672 Accent #274BDC

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 #1105BF Anchor #2A2A2E Secondary #6E6E74 Surface #EEE5DB Accent #24006F

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 #1105BF 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 #1105BF Secondary #4F6498 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.

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Color Lab

How #1105BF 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 10/100

Cool

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

Softness 20/100

Low

Firm and assertive — carries weight and contrast.

Depth 70/100

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 7/100

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 96/100

Very high

Bold and ownable — memorable as a primary brand color.

UI accent fit 40/100

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 56/100

Moderate

Prints close, with a slight loss of vibrancy.

Pairs with #1105BF

For UI

For branding

For interior

For fashion

People also use #1105BF with

True Blue Grape 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 #CDCAF5 for cards and hover fills. Tint 80

Avoid beside #4E05BD — 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 #1105BF 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: #1105BF;
  --color-base-rgb: 17 5 191;
  --color-base-oklch: oklch(37.0% 0.248 266.3);
  --color-50: #F1F0FE;
  --color-100: #DAD8FD;
  --color-200: #B6B1FC;
  --color-300: #827AF5;
  --color-400: #554AE8;
  --color-500: #3227CE;
  --color-600: #2E269C;
  --color-700: #26216E;
  --color-800: #1D1A47;
  --color-900: #13122B;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  medium-blue: {
    50: '#F1F0FE',
    100: '#DAD8FD',
    200: '#B6B1FC',
    300: '#827AF5',
    400: '#554AE8',
    500: '#3227CE',
    600: '#2E269C',
    700: '#26216E',
    800: '#1D1A47',
    900: '#13122B',
  },
}

$base: #1105BF;
$base-ink: #FFFFFF;
$base-50: #F1F0FE;
$base-100: #DAD8FD;
$base-200: #B6B1FC;
$base-300: #827AF5;
$base-400: #554AE8;
$base-500: #3227CE;
$base-600: #2E269C;
$base-700: #26216E;
$base-800: #1D1A47;
$base-900: #13122B;
$base-hover: #0E0497;
$base-subtle: #B2ADF2;

{
    "color": {
        "base": {
            "value": "#1105BF",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1F0FE",
                "type": "color"
            },
            "100": {
                "value": "#DAD8FD",
                "type": "color"
            },
            "200": {
                "value": "#B6B1FC",
                "type": "color"
            },
            "300": {
                "value": "#827AF5",
                "type": "color"
            },
            "400": {
                "value": "#554AE8",
                "type": "color"
            },
            "500": {
                "value": "#3227CE",
                "type": "color"
            },
            "600": {
                "value": "#2E269C",
                "type": "color"
            },
            "700": {
                "value": "#26216E",
                "type": "color"
            },
            "800": {
                "value": "#1D1A47",
                "type": "color"
            },
            "900": {
                "value": "#13122B",
                "type": "color"
            }
        }
    }
}

Palettes built on #1105BF

Color Lab

Pairs with #1105BF

UI roles & guardrails

In real applications

Scales

Every model

Export