What color is #ECF1FB?

#ECF1FB is a pale low-chroma blue-gray with a subtle blue cast. In RGB it is rgb(236, 241, 251), and in HSL hsl(220, 65%, 95%).

Is #ECF1FB accessible as text?

On white, #ECF1FB has a contrast ratio of 1.13:1 (fails WCAG AA for body text); on black it is 18.54:1 (passes). For text placed on #ECF1FB, use black for the best readability.

What is the closest Tailwind color to #ECF1FB?

The nearest Tailwind CSS token is slate-100 (#F1F5F9).

What colors go well with #ECF1FB?

As a neutral, #ECF1FB pairs cleanly with charcoal, near-black and dark grays for text, and sits under accent hues like blue, violet, emerald or warm orange — use it as a soft background and let the accent carry the color.

Is #ECF1FB the same as CSS aliceblue?

No — #ECF1FB is not the CSS named color aliceblue, but aliceblue (#F0F8FF) is the closest CSS named color by perceptual color distance — it sits in a different color family, so treat it as a rough reference, not a match.

#ECF1FB Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #ECF1FB

Not just a swatch — here's how #ECF1FB works with other colors. Named schemes with #ECF1FB in its natural role, and a note on why the supporting colors balance it.

Japanese Sand Base · 5 colors

Base #ECF1FB Surface #EBEADD Highlight #F4F2E7 Secondary #BEACA2 Ink #2C2724

Cool White sets a calm, sun-bleached base here, wrapped in bone and paper off-whites and a soft greige, with a single ink accent for wabi-sabi restraint.

Coastal Morning Lead · 5 colors

Lead #ECF1FB Accent #A5C4C2 Surface #DDDBBF Secondary #9AA0A1 Anchor #21344A

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

Tech Product Signal · 5 colors

Signal #ECF1FB Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #F6FAFF

Cool White is the vivid signal in this product UI — on a near-black surface with cool white, a slate grey and a lighter tint of Cool White.

Nordic Calm Accent · 5 colors

Accent #ECF1FB Secondary #AEB4B8 Surface #F1F2F0 Support #7D93A7 Anchor #2E3236

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

Minimal Editorial Surface · 5 colors

Surface #F8F4EF Accent #ECF1FB Secondary #F8FAFE Support #9D8F88 Ink #18140F

Cool White 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 Cool White carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #ECF1FB 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 46/100

Neutral

Balanced temperature — flexible, sits between warm and cool schemes.

Softness 93/100

Very high

Soft and easy on the eye — gentle backdrops, calm surfaces.

Depth 4/100

Very low

Airy and open — recedes, leaves the composition light.

Naturalness 0/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 15/100

Very low

Clean and current — no dusty, aged cast.

Luxury 7/100

Very low

Playful and accessible rather than exclusive.

Brand distinctiveness 6/100

Very low

Quiet and neutral — a supporting tone, not a signature.

UI accent fit 2/100

Very low

Weak as an action color — too pale, too dark or too muted to signal.

Surface fit 92/100

Very high

Calm enough for large fills — backgrounds, cards, sections.

Print safety 97/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #ECF1FB

For UI

For branding

For interior

For fashion

People also use #ECF1FB with

Pale Turquoise Lavender Old Lace Gainsboro Charcoal

UI roles & guardrails

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

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 16.4:1. Use

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

Avoid beside #EAEAFB — 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 #ECF1FB at work across the surfaces designers actually ship.

Website / UI

Northwind Sign up

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: #ECF1FB;
  --color-base-rgb: 236 241 251;
  --color-base-oklch: oklch(95.7% 0.014 264.5);
  --color-50: #F2F6FD;
  --color-100: #DDE6F9;
  --color-200: #BCCDF1;
  --color-300: #8EAAE2;
  --color-400: #6387CF;
  --color-500: #4167B4;
  --color-600: #385389;
  --color-700: #2D3F62;
  --color-800: #212B40;
  --color-900: #161C27;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  cool-white: {
    50: '#F2F6FD',
    100: '#DDE6F9',
    200: '#BCCDF1',
    300: '#8EAAE2',
    400: '#6387CF',
    500: '#4167B4',
    600: '#385389',
    700: '#2D3F62',
    800: '#212B40',
    900: '#161C27',
  },
}

$base: #ECF1FB;
$base-ink: #141310;
$base-50: #F2F6FD;
$base-100: #DDE6F9;
$base-200: #BCCDF1;
$base-300: #8EAAE2;
$base-400: #6387CF;
$base-500: #4167B4;
$base-600: #385389;
$base-700: #2D3F62;
$base-800: #212B40;
$base-900: #161C27;
$base-hover: #9AB5EA;
$base-subtle: #F9FBFD;

{
    "color": {
        "base": {
            "value": "#ECF1FB",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F2F6FD",
                "type": "color"
            },
            "100": {
                "value": "#DDE6F9",
                "type": "color"
            },
            "200": {
                "value": "#BCCDF1",
                "type": "color"
            },
            "300": {
                "value": "#8EAAE2",
                "type": "color"
            },
            "400": {
                "value": "#6387CF",
                "type": "color"
            },
            "500": {
                "value": "#4167B4",
                "type": "color"
            },
            "600": {
                "value": "#385389",
                "type": "color"
            },
            "700": {
                "value": "#2D3F62",
                "type": "color"
            },
            "800": {
                "value": "#212B40",
                "type": "color"
            },
            "900": {
                "value": "#161C27",
                "type": "color"
            }
        }
    }
}

Palettes built on #ECF1FB

Color Lab

Pairs with #ECF1FB

UI roles & guardrails

In real applications

Scales

Every model

Export