What color is #1017DB?

#1017DB is a medium, vivid blue. In RGB it is rgb(16, 23, 219), and in HSL hsl(238, 86%, 46%).

Is #1017DB accessible as text?

On white, #1017DB has a contrast ratio of 9.69:1 (passes WCAG AA for body text); on black it is 2.17:1 (fails). For text placed on #1017DB, use white for the best readability.

What is the closest Tailwind color to #1017DB?

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

What colors go well with #1017DB?

#1017DB pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #DAD310. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #1017DB below.

Is #1017DB good for buttons?

#1017DB works well for buttons and highlights, but use white text on #1017DB — black text only reaches 2.17:1, below the 4.5:1 needed for normal-size labels.

Is #1017DB the same as CSS mediumblue?

No — #1017DB is not the CSS named color mediumblue, but mediumblue (#0000CD) is the closest CSS named color.

#1017DB Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #1017DB

Not just a swatch — here's how #1017DB works with other colors. Named schemes with #1017DB in its natural role, and a note on why the supporting colors balance it.

Tech Product Signal · 5 colors

Signal #1017DB Surface #14161A Highlight #F4F6F8 Secondary #5B6672 Accent #2957F7

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 #1017DB Accent #A5C4C2 Surface #DDDBBF 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 #1017DB Surface #F6E5D8 Anchor #5B2144 Accent #E5C2CA 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 #1017DB Secondary #5972AB 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 #1017DB Secondary #E86A74 Accent #F79251 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 #1017DB 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 9/100

Cool

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

Softness 21/100

Low

Firm and assertive — carries weight and contrast.

Depth 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 1/100

Very low

Clean and current — no dusty, aged cast.

Luxury 52/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 100/100

Very high

Bold and ownable — memorable as a primary brand color.

UI accent fit 41/100

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 51/100

Moderate

Prints close, with a slight loss of vibrancy.

Pairs with #1017DB

For UI

For branding

For interior

For fashion

People also use #1017DB with

Cornflower Blue Blue Violet Citrine 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 9.7:1. Use

Subtle surface Use #D2D4F5 for cards and hover fills. Tint 80

Avoid beside #4D10DA — 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 #1017DB 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: #1017DB;
  --color-base-rgb: 16 23 219;
  --color-base-oklch: oklch(41.7% 0.270 265.7);
  --color-50: #F0F1FE;
  --color-100: #D8D9FD;
  --color-200: #B3B6F9;
  --color-300: #8084EF;
  --color-400: #5257E0;
  --color-500: #2F34C6;
  --color-600: #2B2F96;
  --color-700: #25276A;
  --color-800: #1C1D45;
  --color-900: #13142A;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  medium-blue: {
    50: '#F0F1FE',
    100: '#D8D9FD',
    200: '#B3B6F9',
    300: '#8084EF',
    400: '#5257E0',
    500: '#2F34C6',
    600: '#2B2F96',
    700: '#25276A',
    800: '#1C1D45',
    900: '#13142A',
  },
}

$base: #1017DB;
$base-ink: #FFFFFF;
$base-50: #F0F1FE;
$base-100: #D8D9FD;
$base-200: #B3B6F9;
$base-300: #8084EF;
$base-400: #5257E0;
$base-500: #2F34C6;
$base-600: #2B2F96;
$base-700: #25276A;
$base-800: #1C1D45;
$base-900: #13142A;
$base-hover: #0D13AF;
$base-subtle: #BBBCF1;

{
    "color": {
        "base": {
            "value": "#1017DB",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0F1FE",
                "type": "color"
            },
            "100": {
                "value": "#D8D9FD",
                "type": "color"
            },
            "200": {
                "value": "#B3B6F9",
                "type": "color"
            },
            "300": {
                "value": "#8084EF",
                "type": "color"
            },
            "400": {
                "value": "#5257E0",
                "type": "color"
            },
            "500": {
                "value": "#2F34C6",
                "type": "color"
            },
            "600": {
                "value": "#2B2F96",
                "type": "color"
            },
            "700": {
                "value": "#25276A",
                "type": "color"
            },
            "800": {
                "value": "#1C1D45",
                "type": "color"
            },
            "900": {
                "value": "#13142A",
                "type": "color"
            }
        }
    }
}

Palettes built on #1017DB

Color Lab

Pairs with #1017DB

UI roles & guardrails

In real applications

Scales

Every model

Export