What color is #C5F8FB?

#C5F8FB is a pale, soft cyan. In RGB it is rgb(197, 248, 251), and in HSL hsl(183, 87%, 88%).

Is #C5F8FB accessible as text?

On white, #C5F8FB has a contrast ratio of 1.15:1 (fails WCAG AA for body text); on black it is 18.19:1 (passes). For text placed on #C5F8FB, use black for the best readability.

What is the closest Tailwind color to #C5F8FB?

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

What colors go well with #C5F8FB?

#C5F8FB pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #FBC8C6. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #C5F8FB below.

Is #C5F8FB good for buttons?

#C5F8FB works well for buttons and highlights, but use black text on #C5F8FB — white text only reaches 1.15:1, below the 4.5:1 needed for normal-size labels.

Is #C5F8FB the same as CSS lightcyan?

No — #C5F8FB is not the CSS named color lightcyan, but lightcyan (#E0FFFF) is the closest CSS named color by perceptual color distance — it sits in a different color family, so treat it as a rough reference, not a match.

#C5F8FB Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #C5F8FB

Not just a swatch — here's how #C5F8FB works with other colors. Named schemes with #C5F8FB in its natural role, and a note on why the supporting colors balance it.

Nordic Calm Accent · 5 colors

Accent #C5F8FB 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 #C5F8FB 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 #C5F8FB Surface #EDEADC Highlight #F5F2E7 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 #C5F8FB Surface #14161A Highlight #F4F6F8 Secondary #596771 Accent #D6FFFF

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 #C5F8FB 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 #C5F8FB 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 5/100

Very low

Airy and open — recedes, leaves the composition light.

Naturalness 6/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 20/100

Low

Clean and current — no dusty, aged cast.

Luxury 9/100

Very low

Playful and accessible rather than exclusive.

Brand distinctiveness 20/100

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 86/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #C5F8FB

For UI

For branding

For interior

For fashion

People also use #C5F8FB 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 16.1:1. Use

Subtle surface Use #F5FCFD for cards and hover fills. Tint 80

Avoid beside #C6E7FB — 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 #C5F8FB at work across the surfaces designers actually ship.

Website / UI

Northwind Sign up

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: #C5F8FB;
  --color-base-rgb: 197 248 251;
  --color-base-oklch: oklch(94.5% 0.052 200.8);
  --color-50: #F0FEFE;
  --color-100: #D8FBFD;
  --color-200: #B3F6FA;
  --color-300: #7FEAF0;
  --color-400: #51DAE1;
  --color-500: #2EBFC7;
  --color-600: #2B9297;
  --color-700: #24676B;
  --color-800: #1C4345;
  --color-900: #13292A;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  celeste: {
    50: '#F0FEFE',
    100: '#D8FBFD',
    200: '#B3F6FA',
    300: '#7FEAF0',
    400: '#51DAE1',
    500: '#2EBFC7',
    600: '#2B9297',
    700: '#24676B',
    800: '#1C4345',
    900: '#13292A',
  },
}

$base: #C5F8FB;
$base-ink: #141310;
$base-50: #F0FEFE;
$base-100: #D8FBFD;
$base-200: #B3F6FA;
$base-300: #7FEAF0;
$base-400: #51DAE1;
$base-500: #2EBFC7;
$base-600: #2B9297;
$base-700: #24676B;
$base-800: #1C4345;
$base-900: #13292A;
$base-hover: #72EFF5;
$base-subtle: #F0FBFC;

{
    "color": {
        "base": {
            "value": "#C5F8FB",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0FEFE",
                "type": "color"
            },
            "100": {
                "value": "#D8FBFD",
                "type": "color"
            },
            "200": {
                "value": "#B3F6FA",
                "type": "color"
            },
            "300": {
                "value": "#7FEAF0",
                "type": "color"
            },
            "400": {
                "value": "#51DAE1",
                "type": "color"
            },
            "500": {
                "value": "#2EBFC7",
                "type": "color"
            },
            "600": {
                "value": "#2B9297",
                "type": "color"
            },
            "700": {
                "value": "#24676B",
                "type": "color"
            },
            "800": {
                "value": "#1C4345",
                "type": "color"
            },
            "900": {
                "value": "#13292A",
                "type": "color"
            }
        }
    }
}

Palettes built on #C5F8FB

Color Lab

Pairs with #C5F8FB

UI roles & guardrails

In real applications

Scales

Every model

Export