What color is #ECF3EE?

#ECF3EE is a pale low-chroma cool gray with a subtle cool cast. In RGB it is rgb(236, 243, 238), and in HSL hsl(137, 23%, 94%).

Is #ECF3EE accessible as text?

On white, #ECF3EE has a contrast ratio of 1.13:1 (fails WCAG AA for body text); on black it is 18.62:1 (passes). For text placed on #ECF3EE, use black for the best readability.

What is the closest Tailwind color to #ECF3EE?

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

What colors go well with #ECF3EE?

As a neutral, #ECF3EE 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 #ECF3EE the same as CSS whitesmoke?

No — #ECF3EE is not the CSS named color whitesmoke, but whitesmoke (#F5F5F5) is the closest CSS named color.

#ECF3EE Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #ECF3EE

Not just a swatch — here's how #ECF3EE works with other colors. Named schemes with #ECF3EE in its natural role, and a note on why the supporting colors balance it.

Japanese Sand Base · 5 colors

Base #ECF3EE Surface #EEEADC Highlight #F5F1E7 Secondary #B6B09F 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 #ECF3EE Accent #A8C4BB Surface #E1D9BE Secondary #9AA0A0 Anchor #1A3648

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

Botanical Studio Lead · 5 colors

Lead #ECF3EE Secondary #4A6C3D Accent #AC6C00 Surface #EEEAD6 Anchor #3C2F20

Cool White leads this botanical set among foliage greens and a terracotta accent, softened by cream and grounded in bark brown.

Tech Product Signal · 5 colors

Signal #ECF3EE Surface #13161A Highlight #F4F6F8 Secondary #586771 Accent #F6FCF7

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.

Minimal Editorial Surface · 5 colors

Surface #F7F4EF Accent #ECF3EE Secondary #F8FBF9 Support #989286 Ink #17140F

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 #ECF3EE 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 49/100

Neutral

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

Softness 94/100

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 22/100

Low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 17/100

Very low

Clean and current — no dusty, aged cast.

Luxury 7/100

Very low

Playful and accessible rather than exclusive.

Brand distinctiveness 4/100

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 93/100

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 #ECF3EE

For UI

For branding

For interior

For fashion

People also use #ECF3EE with

Greige Cool White Platinum Brunswick Green

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 16.5:1. Use

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

Avoid beside #ECF3F1 — 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 #ECF3EE 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: #ECF3EE;
  --color-base-rgb: 236 243 238;
  --color-base-oklch: oklch(95.7% 0.010 155.1);
  --color-50: #F5F9F7;
  --color-100: #E6F0E8;
  --color-200: #CDE0D2;
  --color-300: #A9C6B1;
  --color-400: #86AC91;
  --color-500: #668F72;
  --color-600: #536F5B;
  --color-700: #3E5143;
  --color-800: #2B362E;
  --color-900: #1B221D;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  cool-white: {
    50: '#F5F9F7',
    100: '#E6F0E8',
    200: '#CDE0D2',
    300: '#A9C6B1',
    400: '#86AC91',
    500: '#668F72',
    600: '#536F5B',
    700: '#3E5143',
    800: '#2B362E',
    900: '#1B221D',
  },
}

$base: #ECF3EE;
$base-ink: #141310;
$base-50: #F5F9F7;
$base-100: #E6F0E8;
$base-200: #CDE0D2;
$base-300: #A9C6B1;
$base-400: #86AC91;
$base-500: #668F72;
$base-600: #536F5B;
$base-700: #3E5143;
$base-800: #2B362E;
$base-900: #1B221D;
$base-hover: #B1CEB9;
$base-subtle: #FAFBFA;

{
    "color": {
        "base": {
            "value": "#ECF3EE",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F5F9F7",
                "type": "color"
            },
            "100": {
                "value": "#E6F0E8",
                "type": "color"
            },
            "200": {
                "value": "#CDE0D2",
                "type": "color"
            },
            "300": {
                "value": "#A9C6B1",
                "type": "color"
            },
            "400": {
                "value": "#86AC91",
                "type": "color"
            },
            "500": {
                "value": "#668F72",
                "type": "color"
            },
            "600": {
                "value": "#536F5B",
                "type": "color"
            },
            "700": {
                "value": "#3E5143",
                "type": "color"
            },
            "800": {
                "value": "#2B362E",
                "type": "color"
            },
            "900": {
                "value": "#1B221D",
                "type": "color"
            }
        }
    }
}

Palettes built on #ECF3EE

Color Lab

Pairs with #ECF3EE

UI roles & guardrails

In real applications

Scales

Every model

Export