What color is #ECF1F3?

#ECF1F3 is a pale near-white gray with essentially no hue. In RGB it is rgb(236, 241, 243), and in HSL hsl(197, 23%, 94%).

Is #ECF1F3 accessible as text?

On white, #ECF1F3 has a contrast ratio of 1.14:1 (fails WCAG AA for body text); on black it is 18.44:1 (passes). For text placed on #ECF1F3, use black for the best readability.

What is the closest Tailwind color to #ECF1F3?

The nearest Tailwind CSS token is gray-100 (#F3F4F6).

What colors go well with #ECF1F3?

As a neutral, #ECF1F3 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 #ECF1F3 the same as CSS whitesmoke?

No — #ECF1F3 is not the CSS named color whitesmoke, but whitesmoke (#F5F5F5) is the closest CSS named color.

#ECF1F3 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #ECF1F3

Not just a swatch — here's how #ECF1F3 works with other colors. Named schemes with #ECF1F3 in its natural role, and a note on why the supporting colors balance it.

Japanese Sand Base · 5 colors

Base #ECF1F3 Surface #ECEADC Highlight #F4F2E7 Secondary #B3B19F Ink #2A2723

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 #ECF1F3 Accent #A6C4BF Surface #DEDABF Secondary #9AA0A0 Anchor #1E344A

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 #ECF1F3 Surface #14161A Highlight #F4F6F8 Secondary #596672 Accent #F6FBFD

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 #ECF1F3 Secondary #AEB4B8 Surface #F1F2F0 Support #7B93A5 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 #F6F4EF Accent #ECF1F3 Secondary #F9FAFB Support #969386 Ink #16140F

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 #ECF1F3 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 48/100

Neutral

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

Softness 95/100

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 13/100

Very low

Clean and current — no dusty, aged cast.

Luxury 7/100

Very low

Playful and accessible rather than exclusive.

Brand distinctiveness 2/100

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 94/100

Very high

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

Print safety 98/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #ECF1F3

For UI

For branding

For interior

For fashion

People also use #ECF1F3 with

Gainsboro Cool White Isabelline Platinum 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 16.3:1. Use

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

Avoid beside #ECEFF3 — 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 #ECF1F3 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: #ECF1F3;
  --color-base-rgb: 236 241 243;
  --color-base-oklch: oklch(95.5% 0.006 223.5);
  --color-50: #F5F8F9;
  --color-100: #E6EDF0;
  --color-200: #CDDAE0;
  --color-300: #A9BEC6;
  --color-400: #86A1AC;
  --color-500: #66838F;
  --color-600: #53676F;
  --color-700: #3E4B51;
  --color-800: #2B3336;
  --color-900: #1B2022;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  cool-white: {
    50: '#F5F8F9',
    100: '#E6EDF0',
    200: '#CDDAE0',
    300: '#A9BEC6',
    400: '#86A1AC',
    500: '#66838F',
    600: '#53676F',
    700: '#3E4B51',
    800: '#2B3336',
    900: '#1B2022',
  },
}

$base: #ECF1F3;
$base-ink: #141310;
$base-50: #F5F8F9;
$base-100: #E6EDF0;
$base-200: #CDDAE0;
$base-300: #A9BEC6;
$base-400: #86A1AC;
$base-500: #66838F;
$base-600: #53676F;
$base-700: #3E4B51;
$base-800: #2B3336;
$base-900: #1B2022;
$base-hover: #B1C6CE;
$base-subtle: #FAFBFB;

{
    "color": {
        "base": {
            "value": "#ECF1F3",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F5F8F9",
                "type": "color"
            },
            "100": {
                "value": "#E6EDF0",
                "type": "color"
            },
            "200": {
                "value": "#CDDAE0",
                "type": "color"
            },
            "300": {
                "value": "#A9BEC6",
                "type": "color"
            },
            "400": {
                "value": "#86A1AC",
                "type": "color"
            },
            "500": {
                "value": "#66838F",
                "type": "color"
            },
            "600": {
                "value": "#53676F",
                "type": "color"
            },
            "700": {
                "value": "#3E4B51",
                "type": "color"
            },
            "800": {
                "value": "#2B3336",
                "type": "color"
            },
            "900": {
                "value": "#1B2022",
                "type": "color"
            }
        }
    }
}

Palettes built on #ECF1F3

Color Lab

Pairs with #ECF1F3

UI roles & guardrails

In real applications

Scales

Every model

Export