What color is #5999FE?

#5999FE is a light, vivid blue. In RGB it is rgb(89, 153, 254), and in HSL hsl(217, 99%, 67%).

Is #5999FE accessible as text?

On white, #5999FE has a contrast ratio of 2.83:1 (fails WCAG AA for body text); on black it is 7.41:1 (passes). For text placed on #5999FE, use black for the best readability.

What is the closest Tailwind color to #5999FE?

The nearest Tailwind CSS token is blue-400 (#51A2FF).

What colors go well with #5999FE?

#5999FE pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #FEBE58. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #5999FE below.

Is #5999FE good for buttons?

#5999FE works well for buttons and highlights, but use black text on #5999FE — white text only reaches 2.83:1, below the 4.5:1 needed for normal-size labels.

Is #5999FE the same as CSS cornflowerblue?

No — #5999FE is not the CSS named color cornflowerblue, but cornflowerblue (#6495ED) is the closest CSS named color.

#5999FE Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #5999FE

Not just a swatch — here's how #5999FE works with other colors. Named schemes with #5999FE in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #5999FE Accent #A5C4C1 Surface #DDDBBF Secondary #9AA0A1 Anchor #20344A

Cornflower 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 #5999FE Secondary #AEB4B8 Surface #F1F2F0 Support #7D93A6 Anchor #2E3236

Cornflower 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 #5999FE Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #85C1FF

Cornflower 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 Cornflower Blue.

Minimal Editorial Surface · 5 colors

Surface #F6F4EF Accent #5999FE Secondary #B1C8EC Support #9D8F89 Ink #16140F

Cornflower 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 Cornflower Blue carrying the quiet middle.

Modern Café Dominant · 5 colors

Dominant #5999FE Anchor #3B2924 Surface #EAE5D0 Accent #789E79 Secondary #393933

Cornflower 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.

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Color Lab

How #5999FE 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 48/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 33/100

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 37/100

Low

Understated — leans refined without going austere.

Brand distinctiveness 63/100

High

Bold and ownable — memorable as a primary brand color.

UI accent fit 64/100

High

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

Surface fit 25/100

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 #5999FE

For UI

For branding

For interior

For fashion

People also use #5999FE with

Electric Blue Medium Slate Blue Burlywood 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 Only on dark surfaces. Avoid

Background Pair with #141310 text at 6.6:1. Use

Subtle surface Use #E2EBFA for cards and hover fills. Tint 80

Avoid beside #5860FE — 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 #5999FE 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: #5999FE;
  --color-base-rgb: 89 153 254;
  --color-base-oklch: oklch(68.7% 0.163 259.2);
  --color-50: #F0F6FE;
  --color-100: #D8E6FD;
  --color-200: #B1CDFC;
  --color-300: #78A9F7;
  --color-400: #4786EB;
  --color-500: #2366D2;
  --color-600: #23539F;
  --color-700: #1F3E6F;
  --color-800: #192B48;
  --color-900: #111B2C;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  cornflower-blue: {
    50: '#F0F6FE',
    100: '#D8E6FD',
    200: '#B1CDFC',
    300: '#78A9F7',
    400: '#4786EB',
    500: '#2366D2',
    600: '#23539F',
    700: '#1F3E6F',
    800: '#192B48',
    900: '#111B2C',
  },
}

$base: #5999FE;
$base-ink: #141310;
$base-50: #F0F6FE;
$base-100: #D8E6FD;
$base-200: #B1CDFC;
$base-300: #78A9F7;
$base-400: #4786EB;
$base-500: #2366D2;
$base-600: #23539F;
$base-700: #1F3E6F;
$base-800: #192B48;
$base-900: #111B2C;
$base-hover: #146DFE;
$base-subtle: #D3E1F9;

{
    "color": {
        "base": {
            "value": "#5999FE",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0F6FE",
                "type": "color"
            },
            "100": {
                "value": "#D8E6FD",
                "type": "color"
            },
            "200": {
                "value": "#B1CDFC",
                "type": "color"
            },
            "300": {
                "value": "#78A9F7",
                "type": "color"
            },
            "400": {
                "value": "#4786EB",
                "type": "color"
            },
            "500": {
                "value": "#2366D2",
                "type": "color"
            },
            "600": {
                "value": "#23539F",
                "type": "color"
            },
            "700": {
                "value": "#1F3E6F",
                "type": "color"
            },
            "800": {
                "value": "#192B48",
                "type": "color"
            },
            "900": {
                "value": "#111B2C",
                "type": "color"
            }
        }
    }
}

Palettes built on #5999FE

Color Lab

Pairs with #5999FE

UI roles & guardrails

In real applications

Scales

Every model

Export