What color is #648FEB?

#648FEB is a light, vivid blue. In RGB it is rgb(100, 143, 235), and in HSL hsl(221, 77%, 66%).

Is #648FEB accessible as text?

On white, #648FEB has a contrast ratio of 3.15:1 (fails WCAG AA for body text); on black it is 6.67:1 (passes). For text placed on #648FEB, use black for the best readability.

What is the closest Tailwind color to #648FEB?

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

What colors go well with #648FEB?

#648FEB pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #EBC166. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #648FEB below.

Is #648FEB good for buttons?

#648FEB works well for buttons and highlights, but use black text on #648FEB — white text only reaches 3.15:1, below the 4.5:1 needed for normal-size labels.

Is #648FEB the same as CSS cornflowerblue?

No — #648FEB is not the CSS named color cornflowerblue, but cornflowerblue (#6495ED) is the closest CSS named color.

#648FEB Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #648FEB

Not just a swatch — here's how #648FEB works with other colors. Named schemes with #648FEB in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #648FEB 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 #648FEB 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 #648FEB Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #8DB6FF

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 #648FEB Secondary #ADBEE0 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 #648FEB Anchor #3B2924 Surface #F3E1D2 Accent #789E79 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 #648FEB 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 49/100

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 37/100

Low

A faint retro warmth without tipping into sepia.

Luxury 40/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 56/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 74/100

High

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

Surface fit 24/100

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 #648FEB

For UI

For branding

For interior

For fashion

People also use #648FEB 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 5.9:1. Use

Subtle surface Use #E4EAF7 for cards and hover fills. Tint 80

Avoid beside #6866EB — 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 #648FEB at work across the surfaces designers actually ship.

Website / UI

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Build faster.

A working theme, generated in seconds.

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: #648FEB;
  --color-base-rgb: 100 143 235;
  --color-base-oklch: oklch(66.1% 0.145 263.9);
  --color-50: #F1F5FE;
  --color-100: #DAE5FB;
  --color-200: #B7CBF5;
  --color-300: #86A5E9;
  --color-400: #5982D9;
  --color-500: #3762BE;
  --color-600: #314F91;
  --color-700: #283C66;
  --color-800: #1E2A43;
  --color-900: #141B29;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  cornflower-blue: {
    50: '#F1F5FE',
    100: '#DAE5FB',
    200: '#B7CBF5',
    300: '#86A5E9',
    400: '#5982D9',
    500: '#3762BE',
    600: '#314F91',
    700: '#283C66',
    800: '#1E2A43',
    900: '#141B29',
  },
}

$base: #648FEB;
$base-ink: #141310;
$base-50: #F1F5FE;
$base-100: #DAE5FB;
$base-200: #B7CBF5;
$base-300: #86A5E9;
$base-400: #5982D9;
$base-500: #3762BE;
$base-600: #314F91;
$base-700: #283C66;
$base-800: #1E2A43;
$base-900: #141B29;
$base-hover: #2A65E3;
$base-subtle: #D6DFF4;

{
    "color": {
        "base": {
            "value": "#648FEB",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1F5FE",
                "type": "color"
            },
            "100": {
                "value": "#DAE5FB",
                "type": "color"
            },
            "200": {
                "value": "#B7CBF5",
                "type": "color"
            },
            "300": {
                "value": "#86A5E9",
                "type": "color"
            },
            "400": {
                "value": "#5982D9",
                "type": "color"
            },
            "500": {
                "value": "#3762BE",
                "type": "color"
            },
            "600": {
                "value": "#314F91",
                "type": "color"
            },
            "700": {
                "value": "#283C66",
                "type": "color"
            },
            "800": {
                "value": "#1E2A43",
                "type": "color"
            },
            "900": {
                "value": "#141B29",
                "type": "color"
            }
        }
    }
}

Palettes built on #648FEB

Color Lab

Pairs with #648FEB

UI roles & guardrails

In real applications

Scales

Every model

Export