What color is #C4F4F9?

#C4F4F9 is a pale, soft cyan. In RGB it is rgb(196, 244, 249), and in HSL hsl(186, 82%, 87%).

Is #C4F4F9 accessible as text?

On white, #C4F4F9 has a contrast ratio of 1.19:1 (fails WCAG AA for body text); on black it is 17.66:1 (passes). For text placed on #C4F4F9, use black for the best readability.

What is the closest Tailwind color to #C4F4F9?

The nearest Tailwind CSS token is cyan-100 (#CEFAFE).

What colors go well with #C4F4F9?

#C4F4F9 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #F9C8C3. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #C4F4F9 below.

Is #C4F4F9 good for buttons?

#C4F4F9 works well for buttons and highlights, but use black text on #C4F4F9 — white text only reaches 1.19:1, below the 4.5:1 needed for normal-size labels.

Is #C4F4F9 the same as CSS paleturquoise?

No — #C4F4F9 is not the CSS named color paleturquoise, but paleturquoise (#AFEEEE) is the closest CSS named color.

#C4F4F9 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #C4F4F9

Not just a swatch — here's how #C4F4F9 works with other colors. Named schemes with #C4F4F9 in its natural role, and a note on why the supporting colors balance it.

Nordic Calm Accent · 5 colors

Accent #C4F4F9 Secondary #AEB4B8 Surface #F1F2F0 Support #7A94A5 Anchor #2E3236

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

Coastal Morning Lead · 5 colors

Lead #C4F4F9 Accent #A6C4BE Surface #DFDABE Secondary #9AA0A0 Anchor #1D3549

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

Japanese Sand Base · 5 colors

Base #C4F4F9 Surface #EDEADC Highlight #F4F2E7 Secondary #B4B19F Ink #2A2723

Celeste 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.

Tech Product Signal · 5 colors

Signal #C4F4F9 Surface #14161A Highlight #F4F6F8 Secondary #596671 Accent #D8FFFF

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

Minimal Editorial Surface · 5 colors

Surface #F6F4EF Accent #C4F4F9 Secondary #EDFEFF Support #979286 Ink #16140F

Celeste 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 Celeste carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #C4F4F9 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 37/100

Cool

Reads cool and recessive — calming, technical, good for trust-led UI.

Softness 85/100

Very high

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

Depth 6/100

Very low

Airy and open — recedes, leaves the composition light.

Naturalness 5/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 21/100

Low

Clean and current — no dusty, aged cast.

Luxury 10/100

Very low

Playful and accessible rather than exclusive.

Brand distinctiveness 19/100

Very low

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

UI accent fit 4/100

Very low

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

Surface fit 79/100

High

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

Print safety 87/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #C4F4F9

For UI

For branding

For interior

For fashion

People also use #C4F4F9 with

Tea Green Periwinkle Rose Quartz 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 15.6:1. Use

Subtle surface Use #F4FCFC for cards and hover fills. Tint 80

Avoid beside #C3E1F9 — 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 #C4F4F9 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: #C4F4F9;
  --color-base-rgb: 196 244 249;
  --color-base-oklch: oklch(93.5% 0.049 204.2);
  --color-50: #F0FDFE;
  --color-100: #D9F9FC;
  --color-200: #B5F1F8;
  --color-300: #83E2ED;
  --color-400: #55CFDD;
  --color-500: #32B4C3;
  --color-600: #2E8A94;
  --color-700: #266269;
  --color-800: #1D4044;
  --color-900: #14272A;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  celeste: {
    50: '#F0FDFE',
    100: '#D9F9FC',
    200: '#B5F1F8',
    300: '#83E2ED',
    400: '#55CFDD',
    500: '#32B4C3',
    600: '#2E8A94',
    700: '#266269',
    800: '#1D4044',
    900: '#14272A',
  },
}

$base: #C4F4F9;
$base-ink: #141310;
$base-50: #F0FDFE;
$base-100: #D9F9FC;
$base-200: #B5F1F8;
$base-300: #83E2ED;
$base-400: #55CFDD;
$base-500: #32B4C3;
$base-600: #2E8A94;
$base-700: #266269;
$base-800: #1D4044;
$base-900: #14272A;
$base-hover: #72E4F1;
$base-subtle: #EFFAFB;

{
    "color": {
        "base": {
            "value": "#C4F4F9",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0FDFE",
                "type": "color"
            },
            "100": {
                "value": "#D9F9FC",
                "type": "color"
            },
            "200": {
                "value": "#B5F1F8",
                "type": "color"
            },
            "300": {
                "value": "#83E2ED",
                "type": "color"
            },
            "400": {
                "value": "#55CFDD",
                "type": "color"
            },
            "500": {
                "value": "#32B4C3",
                "type": "color"
            },
            "600": {
                "value": "#2E8A94",
                "type": "color"
            },
            "700": {
                "value": "#266269",
                "type": "color"
            },
            "800": {
                "value": "#1D4044",
                "type": "color"
            },
            "900": {
                "value": "#14272A",
                "type": "color"
            }
        }
    }
}

Palettes built on #C4F4F9

Color Lab

Pairs with #C4F4F9

UI roles & guardrails

In real applications

Scales

Every model

Export