What color is #678FEE?

#678FEE is a light, vivid blue. In RGB it is rgb(103, 143, 238), and in HSL hsl(222, 80%, 67%).

Is #678FEE accessible as text?

On white, #678FEE has a contrast ratio of 3.12:1 (fails WCAG AA for body text); on black it is 6.74:1 (passes). For text placed on #678FEE, use black for the best readability.

What is the closest Tailwind color to #678FEE?

The nearest Tailwind CSS token is indigo-400 (#7C86FF).

What colors go well with #678FEE?

#678FEE pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #EEC668. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #678FEE below.

Is #678FEE good for buttons?

#678FEE works well for buttons and highlights, but use black text on #678FEE — white text only reaches 3.12:1, below the 4.5:1 needed for normal-size labels.

Is #678FEE the same as CSS cornflowerblue?

No — #678FEE is not the CSS named color cornflowerblue, but cornflowerblue (#6495ED) is the closest CSS named color.

#678FEE Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #678FEE

Not just a swatch — here's how #678FEE works with other colors. Named schemes with #678FEE in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #678FEE Accent #A5C4C2 Surface #DDDBBF Secondary #9AA0A1 Anchor #21344A

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 #678FEE Secondary #AEB4B8 Surface #F1F2F0 Support #7D93A7 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 #678FEE Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #8FB6FF

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 #F8F4EF Accent #678FEE Secondary #AFBFE2 Support #9D8F88 Ink #18140F

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 #678FEE Anchor #3B2924 Surface #F3E1D2 Accent #779E7A Secondary #3C3734

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.

Build a working theme in the generator →

Color Lab

How #678FEE 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 14/100

Cool

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

Softness 48/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 35/100

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 36/100

Low

A faint retro warmth without tipping into sepia.

Luxury 40/100

Low

Understated — leans refined without going austere.

Brand distinctiveness 57/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 73/100

High

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

Surface fit 23/100

Low

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

Print safety 73/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #678FEE

For UI

For branding

For interior

For fashion

People also use #678FEE with

Powder 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 Fine for headings 24px+ on white. Pass

Background Pair with #141310 text at 6.0:1. Use

Subtle surface Use #E4EAF8 for cards and hover fills. Tint 80

Avoid beside #6C68EE — 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 #678FEE 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: #678FEE;
  --color-base-rgb: 103 143 238;
  --color-base-oklch: oklch(66.4% 0.148 265.4);
  --color-50: #F1F5FE;
  --color-100: #D9E4FC;
  --color-200: #B6C9F7;
  --color-300: #84A3EB;
  --color-400: #577FDB;
  --color-500: #345EC1;
  --color-600: #2F4D93;
  --color-700: #273A68;
  --color-800: #1D2944;
  --color-900: #141A29;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  cornflower-blue: {
    50: '#F1F5FE',
    100: '#D9E4FC',
    200: '#B6C9F7',
    300: '#84A3EB',
    400: '#577FDB',
    500: '#345EC1',
    600: '#2F4D93',
    700: '#273A68',
    800: '#1D2944',
    900: '#141A29',
  },
}

$base: #678FEE;
$base-ink: #141310;
$base-50: #F1F5FE;
$base-100: #D9E4FC;
$base-200: #B6C9F7;
$base-300: #84A3EB;
$base-400: #577FDB;
$base-500: #345EC1;
$base-600: #2F4D93;
$base-700: #273A68;
$base-800: #1D2944;
$base-900: #141A29;
$base-hover: #2A63E7;
$base-subtle: #D6E0F5;

{
    "color": {
        "base": {
            "value": "#678FEE",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1F5FE",
                "type": "color"
            },
            "100": {
                "value": "#D9E4FC",
                "type": "color"
            },
            "200": {
                "value": "#B6C9F7",
                "type": "color"
            },
            "300": {
                "value": "#84A3EB",
                "type": "color"
            },
            "400": {
                "value": "#577FDB",
                "type": "color"
            },
            "500": {
                "value": "#345EC1",
                "type": "color"
            },
            "600": {
                "value": "#2F4D93",
                "type": "color"
            },
            "700": {
                "value": "#273A68",
                "type": "color"
            },
            "800": {
                "value": "#1D2944",
                "type": "color"
            },
            "900": {
                "value": "#141A29",
                "type": "color"
            }
        }
    }
}