What color is #E4F3EF?

#E4F3EF is a pale low-chroma cool gray with a subtle cool cast. In RGB it is rgb(228, 243, 239), and in HSL hsl(164, 38%, 92%).

Is #E4F3EF accessible as text?

On white, #E4F3EF has a contrast ratio of 1.14:1 (fails WCAG AA for body text); on black it is 18.37:1 (passes). For text placed on #E4F3EF, use black for the best readability.

What is the closest Tailwind color to #E4F3EF?

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

What colors go well with #E4F3EF?

As a neutral, #E4F3EF 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 #E4F3EF the same as CSS whitesmoke?

No — #E4F3EF is not the CSS named color whitesmoke, but whitesmoke (#F5F5F5) is the closest CSS named color.

#E4F3EF Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #E4F3EF

Not just a swatch — here's how #E4F3EF works with other colors. Named schemes with #E4F3EF in its natural role, and a note on why the supporting colors balance it.

Japanese Sand Base · 5 colors

Base #E4F3EF Surface #EDEADC Highlight #F5F1E7 Secondary #B5B19F 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 #E4F3EF Accent #A7C4BC Surface #E0D9BE Secondary #9AA0A0 Anchor #1C3549

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 #E4F3EF Surface #14161A Highlight #F4F6F8 Secondary #586771 Accent #F0FEFA

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 #E4F3EF Secondary #AEB4B7 Surface #F1F2F0 Support #7994A4 Anchor #2D3236

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 #F7F4EF Accent #E4F3EF Secondary #F6FBFA 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.

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Color Lab

How #E4F3EF 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 92/100

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 12/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 16/100

Very low

Clean and current — no dusty, aged cast.

Luxury 8/100

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 90/100

Very high

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

Print safety 96/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #E4F3EF

For UI

For branding

For interior

For fashion

People also use #E4F3EF with

Seafoam Cool White Platinum 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 16.2:1. Use

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

Avoid beside #E3F1F2 — 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 #E4F3EF at work across the surfaces designers actually ship.

Website / UI

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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: #E4F3EF;
  --color-base-rgb: 228 243 239;
  --color-base-oklch: oklch(95.2% 0.017 178.3);
  --color-50: #F4FBF9;
  --color-100: #E2F3EE;
  --color-200: #C7E6DD;
  --color-300: #9FD0C3;
  --color-400: #7AB8A8;
  --color-500: #599C8A;
  --color-600: #49796C;
  --color-700: #38574F;
  --color-800: #273A35;
  --color-900: #192421;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  cool-white: {
    50: '#F4FBF9',
    100: '#E2F3EE',
    200: '#C7E6DD',
    300: '#9FD0C3',
    400: '#7AB8A8',
    500: '#599C8A',
    600: '#49796C',
    700: '#38574F',
    800: '#273A35',
    900: '#192421',
  },
}

$base: #E4F3EF;
$base-ink: #141310;
$base-50: #F4FBF9;
$base-100: #E2F3EE;
$base-200: #C7E6DD;
$base-300: #9FD0C3;
$base-400: #7AB8A8;
$base-500: #599C8A;
$base-600: #49796C;
$base-700: #38574F;
$base-800: #273A35;
$base-900: #192421;
$base-hover: #A2D5C8;
$base-subtle: #F7FBFA;

{
    "color": {
        "base": {
            "value": "#E4F3EF",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F4FBF9",
                "type": "color"
            },
            "100": {
                "value": "#E2F3EE",
                "type": "color"
            },
            "200": {
                "value": "#C7E6DD",
                "type": "color"
            },
            "300": {
                "value": "#9FD0C3",
                "type": "color"
            },
            "400": {
                "value": "#7AB8A8",
                "type": "color"
            },
            "500": {
                "value": "#599C8A",
                "type": "color"
            },
            "600": {
                "value": "#49796C",
                "type": "color"
            },
            "700": {
                "value": "#38574F",
                "type": "color"
            },
            "800": {
                "value": "#273A35",
                "type": "color"
            },
            "900": {
                "value": "#192421",
                "type": "color"
            }
        }
    }
}

Palettes built on #E4F3EF

Color Lab

Pairs with #E4F3EF

UI roles & guardrails

In real applications

Scales

Every model

Export