What color is #E4EFF0?

#E4EFF0 is a pale low-chroma cool gray with a subtle cool cast. In RGB it is rgb(228, 239, 240), and in HSL hsl(185, 29%, 92%).

Is #E4EFF0 accessible as text?

On white, #E4EFF0 has a contrast ratio of 1.17:1 (fails WCAG AA for body text); on black it is 17.90:1 (passes). For text placed on #E4EFF0, use black for the best readability.

What is the closest Tailwind color to #E4EFF0?

The nearest Tailwind CSS token is slate-200 (#E2E8F0).

What colors go well with #E4EFF0?

As a neutral, #E4EFF0 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 #E4EFF0 the same as CSS whitesmoke?

No — #E4EFF0 is not the CSS named color whitesmoke, but whitesmoke (#F5F5F5) is the closest CSS named color.

#E4EFF0 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #E4EFF0

Not just a swatch — here's how #E4EFF0 works with other colors. Named schemes with #E4EFF0 in its natural role, and a note on why the supporting colors balance it.

Japanese Sand Base · 5 colors

Base #E4EFF0 Surface #EDEADC Highlight #F4F2E7 Secondary #B4B19F 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 #E4EFF0 Accent #A6C4BE Surface #DFDABE Secondary #9AA0A0 Anchor #1D3549

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 #E4EFF0 Surface #14161A Highlight #F4F6F8 Secondary #596771 Accent #F2FCFD

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 #E4EFF0 Secondary #AEB4B8 Surface #F1F2F0 Support #7A94A5 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 #E4EFF0 Secondary #F7FBFB Support #979286 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 #E4EFF0 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 47/100

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 5/100

Very low

Airy and open — recedes, leaves the composition light.

Naturalness 2/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 15/100

Very low

Clean and current — no dusty, aged cast.

Luxury 9/100

Very low

Playful and accessible rather than exclusive.

Brand distinctiveness 5/100

Very low

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

UI accent fit 3/100

Very low

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

Surface fit 91/100

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 #E4EFF0

For UI

For branding

For interior

For fashion

People also use #E4EFF0 with

Platinum Lavender Dark Slate Gray

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 15.8:1. Use

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

Avoid beside #E5ECF1 — 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 #E4EFF0 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: #E4EFF0;
  --color-base-rgb: 228 239 240;
  --color-base-oklch: oklch(94.4% 0.012 203.5);
  --color-50: #F5F9FA;
  --color-100: #E4F0F1;
  --color-200: #CAE0E2;
  --color-300: #A5C7CA;
  --color-400: #81ADB1;
  --color-500: #619094;
  --color-600: #4F7073;
  --color-700: #3C5153;
  --color-800: #293637;
  --color-900: #1B2223;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  cool-white: {
    50: '#F5F9FA',
    100: '#E4F0F1',
    200: '#CAE0E2',
    300: '#A5C7CA',
    400: '#81ADB1',
    500: '#619094',
    600: '#4F7073',
    700: '#3C5153',
    800: '#293637',
    900: '#1B2223',
  },
}

$base: #E4EFF0;
$base-ink: #141310;
$base-50: #F5F9FA;
$base-100: #E4F0F1;
$base-200: #CAE0E2;
$base-300: #A5C7CA;
$base-400: #81ADB1;
$base-500: #619094;
$base-600: #4F7073;
$base-700: #3C5153;
$base-800: #293637;
$base-900: #1B2223;
$base-hover: #A8CCCF;
$base-subtle: #F8FAFA;

{
    "color": {
        "base": {
            "value": "#E4EFF0",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F5F9FA",
                "type": "color"
            },
            "100": {
                "value": "#E4F0F1",
                "type": "color"
            },
            "200": {
                "value": "#CAE0E2",
                "type": "color"
            },
            "300": {
                "value": "#A5C7CA",
                "type": "color"
            },
            "400": {
                "value": "#81ADB1",
                "type": "color"
            },
            "500": {
                "value": "#619094",
                "type": "color"
            },
            "600": {
                "value": "#4F7073",
                "type": "color"
            },
            "700": {
                "value": "#3C5153",
                "type": "color"
            },
            "800": {
                "value": "#293637",
                "type": "color"
            },
            "900": {
                "value": "#1B2223",
                "type": "color"
            }
        }
    }
}

Palettes built on #E4EFF0

Color Lab

Pairs with #E4EFF0

UI roles & guardrails

In real applications

Scales

Every model

Export