What color is #1183EE?

#1183EE is a medium, vivid blue. In RGB it is rgb(17, 131, 238), and in HSL hsl(209, 87%, 50%).

Is #1183EE accessible as text?

On white, #1183EE has a contrast ratio of 3.81:1 (fails WCAG AA for body text); on black it is 5.50:1 (passes). For text placed on #1183EE, use black for the best readability.

What is the closest Tailwind color to #1183EE?

The nearest Tailwind CSS token is blue-500 (#2B7FFF).

What colors go well with #1183EE?

#1183EE pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #EE7C11. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #1183EE below.

Is #1183EE good for buttons?

#1183EE works well for buttons and highlights, but use black text on #1183EE — white text only reaches 3.81:1, below the 4.5:1 needed for normal-size labels.

Is #1183EE the same as CSS dodgerblue?

No — #1183EE is not the CSS named color dodgerblue, but dodgerblue (#1E90FF) is the closest CSS named color.

#1183EE Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #1183EE

Not just a swatch — here's how #1183EE works with other colors. Named schemes with #1183EE in its natural role, and a note on why the supporting colors balance it.

Tech Product Signal · 5 colors

Signal #1183EE Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #54AAFF

Signal 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 Signal Blue.

Coastal Morning Lead · 5 colors

Lead #1183EE Accent #A5C4C1 Surface #DDDBBF Secondary #9AA0A1 Anchor #20344A

Signal 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 #1183EE Surface #EDE9D6 Anchor #5A2145 Accent #E4C2CB Secondary #322B2F

Signal Blue sits between cream and a deep berry here, softened by a blush accent and grounded by charcoal.

Minimal Editorial Surface · 5 colors

Surface #F6F4EF Accent #1183EE Secondary #92B1D7 Support #9D8F89 Ink #16140F

Signal 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 Signal Blue carrying the quiet middle.

Sunset Warmth Glow · 5 colors

Glow #1183EE Secondary #E76A78 Accent #C5B029 Anchor #563B59 Surface #EEEBD6

Signal 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 #1183EE 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 4/100

Cool

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

Softness 40/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 41/100

Moderate

Mid depth — usable as an accent or a muted ground.

Naturalness 0/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 27/100

Low

A faint retro warmth without tipping into sepia.

Luxury 43/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 71/100

High

Bold and ownable — memorable as a primary brand color.

UI accent fit 82/100

Very high

Strong interactive accent — visible and can carry a legible label.

Surface fit 18/100

Very low

Too saturated or mid-toned for big areas — keep it to accents.

Print safety 61/100

High

Prints close, with a slight loss of vibrancy.

Pairs with #1183EE

For UI

For branding

For interior

For fashion

People also use #1183EE with

Cyan Blue Bronze Gainsboro Charcoal

UI roles & guardrails

Primary action Safe as a filled button with near-black label. AA

Body text Do not use for body copy on light surfaces. Avoid

Large display Fine for headings 24px+ on white. Pass

Background Pair with #141310 text at 4.9:1. Use

Subtle surface Use #D6E6F5 for cards and hover fills. Tint 80

Avoid beside #1139EE — 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 #1183EE at work across the surfaces designers actually ship.

Website / UI

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Build faster.

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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: #1183EE;
  --color-base-rgb: 17 131 238;
  --color-base-oklch: oklch(61.1% 0.185 253.5);
  --color-50: #F0F8FE;
  --color-100: #D8EBFD;
  --color-200: #B3D7FA;
  --color-300: #7FB9F0;
  --color-400: #519BE1;
  --color-500: #2E7DC7;
  --color-600: #2B6397;
  --color-700: #24496B;
  --color-800: #1C3145;
  --color-900: #131F2A;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  signal-blue: {
    50: '#F0F8FE',
    100: '#D8EBFD',
    200: '#B3D7FA',
    300: '#7FB9F0',
    400: '#519BE1',
    500: '#2E7DC7',
    600: '#2B6397',
    700: '#24496B',
    800: '#1C3145',
    900: '#131F2A',
  },
}

$base: #1183EE;
$base-ink: #141310;
$base-50: #F0F8FE;
$base-100: #D8EBFD;
$base-200: #B3D7FA;
$base-300: #7FB9F0;
$base-400: #519BE1;
$base-500: #2E7DC7;
$base-600: #2B6397;
$base-700: #24496B;
$base-800: #1C3145;
$base-900: #131F2A;
$base-hover: #0D69BF;
$base-subtle: #BFDAF2;

{
    "color": {
        "base": {
            "value": "#1183EE",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0F8FE",
                "type": "color"
            },
            "100": {
                "value": "#D8EBFD",
                "type": "color"
            },
            "200": {
                "value": "#B3D7FA",
                "type": "color"
            },
            "300": {
                "value": "#7FB9F0",
                "type": "color"
            },
            "400": {
                "value": "#519BE1",
                "type": "color"
            },
            "500": {
                "value": "#2E7DC7",
                "type": "color"
            },
            "600": {
                "value": "#2B6397",
                "type": "color"
            },
            "700": {
                "value": "#24496B",
                "type": "color"
            },
            "800": {
                "value": "#1C3145",
                "type": "color"
            },
            "900": {
                "value": "#131F2A",
                "type": "color"
            }
        }
    }
}

Palettes built on #1183EE

Color Lab

Pairs with #1183EE

UI roles & guardrails

In real applications

Scales

Every model

Export