What color is #4F81EF?

#4F81EF is a light, vivid blue. In RGB it is rgb(79, 129, 239), and in HSL hsl(221, 83%, 62%).

Is #4F81EF accessible as text?

On white, #4F81EF has a contrast ratio of 3.67:1 (fails WCAG AA for body text); on black it is 5.72:1 (passes). For text placed on #4F81EF, use black for the best readability.

What is the closest Tailwind color to #4F81EF?

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

What colors go well with #4F81EF?

#4F81EF pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #EFBC4E. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #4F81EF below.

Is #4F81EF good for buttons?

#4F81EF works well for buttons and highlights, but use black text on #4F81EF — white text only reaches 3.67:1, below the 4.5:1 needed for normal-size labels.

Is #4F81EF the same as CSS dodgerblue?

No — #4F81EF is not the CSS named color dodgerblue, but dodgerblue (#1E90FF) is the closest CSS named color.

#4F81EF Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #4F81EF

Not just a swatch — here's how #4F81EF works with other colors. Named schemes with #4F81EF in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #4F81EF Accent #A5C4C1 Surface #DDDBBF Secondary #9AA0A1 Anchor #21344A

Signal Blue opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.

Nordic Calm Accent · 5 colors

Accent #4F81EF Secondary #AEB4B8 Surface #F1F2F0 Support #7D93A7 Anchor #2E3236

Signal Blue keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.

Tech Product Signal · 5 colors

Signal #4F81EF Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #78A9FF

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.

Minimal Editorial Surface · 5 colors

Surface #F8F4EF Accent #4F81EF Secondary #9FB3DA Support #9D8F88 Ink #18140F

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.

Modern Café Dominant · 5 colors

Dominant #4F81EF Anchor #3B2924 Surface #F3E1D2 Accent #789E79 Secondary #3D3734

Signal Blue anchors this café scheme as the warm mid-tone, lifted by latte cream and a muted sage accent and grounded by espresso brown and a warm charcoal.

Build a working theme in the generator →

Color Lab

How #4F81EF 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 8/100

Cool

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

Softness 42/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 40/100

Low

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

Naturalness 0/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 30/100

Low

A faint retro warmth without tipping into sepia.

Luxury 42/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 67/100

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 19/100

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 #4F81EF

For UI

For branding

For interior

For fashion

People also use #4F81EF with

Baby Blue Iris Honey 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 5.1:1. Use

Subtle surface Use #E0E7F7 for cards and hover fills. Tint 80

Avoid beside #504EEF — 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 #4F81EF 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: #4F81EF;
  --color-base-rgb: 79 129 239;
  --color-base-oklch: oklch(62.4% 0.174 263.7);
  --color-50: #F0F5FE;
  --color-100: #D9E4FD;
  --color-200: #B4CAF8;
  --color-300: #82A4ED;
  --color-400: #5480DE;
  --color-500: #3160C3;
  --color-600: #2D4E95;
  --color-700: #263B69;
  --color-800: #1C2944;
  --color-900: #131A2A;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  signal-blue: {
    50: '#F0F5FE',
    100: '#D9E4FD',
    200: '#B4CAF8',
    300: '#82A4ED',
    400: '#5480DE',
    500: '#3160C3',
    600: '#2D4E95',
    700: '#263B69',
    800: '#1C2944',
    900: '#131A2A',
  },
}

$base: #4F81EF;
$base-ink: #141310;
$base-50: #F0F5FE;
$base-100: #D9E4FD;
$base-200: #B4CAF8;
$base-300: #82A4ED;
$base-400: #5480DE;
$base-500: #3160C3;
$base-600: #2D4E95;
$base-700: #263B69;
$base-800: #1C2944;
$base-900: #131A2A;
$base-hover: #1658E7;
$base-subtle: #D0DBF4;

{
    "color": {
        "base": {
            "value": "#4F81EF",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0F5FE",
                "type": "color"
            },
            "100": {
                "value": "#D9E4FD",
                "type": "color"
            },
            "200": {
                "value": "#B4CAF8",
                "type": "color"
            },
            "300": {
                "value": "#82A4ED",
                "type": "color"
            },
            "400": {
                "value": "#5480DE",
                "type": "color"
            },
            "500": {
                "value": "#3160C3",
                "type": "color"
            },
            "600": {
                "value": "#2D4E95",
                "type": "color"
            },
            "700": {
                "value": "#263B69",
                "type": "color"
            },
            "800": {
                "value": "#1C2944",
                "type": "color"
            },
            "900": {
                "value": "#131A2A",
                "type": "color"
            }
        }
    }
}