What color is #63D4E8?

#63D4E8 is a light, vivid cyan. In RGB it is rgb(99, 212, 232), and in HSL hsl(189, 74%, 65%).

Is #63D4E8 accessible as text?

On white, #63D4E8 has a contrast ratio of 1.73:1 (fails WCAG AA for body text); on black it is 12.11:1 (passes). For text placed on #63D4E8, use black for the best readability.

What is the closest Tailwind color to #63D4E8?

The nearest Tailwind CSS token is cyan-400 (#00D3F2).

What colors go well with #63D4E8?

#63D4E8 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #E87864. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #63D4E8 below.

Is #63D4E8 good for buttons?

#63D4E8 works well for buttons and highlights, but use black text on #63D4E8 — white text only reaches 1.73:1, below the 4.5:1 needed for normal-size labels.

Is #63D4E8 the same as CSS skyblue?

No — #63D4E8 is not the CSS named color skyblue, but skyblue (#87CEEB) is the closest CSS named color.

#63D4E8 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #63D4E8

Not just a swatch — here's how #63D4E8 works with other colors. Named schemes with #63D4E8 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #63D4E8 Accent #A6C4BE Surface #DFDABE Secondary #9AA0A0 Anchor #1E3549

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

Nordic Calm Accent · 5 colors

Accent #63D4E8 Secondary #AEB4B8 Surface #F1F2F0 Support #7A94A5 Anchor #2E3236

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

Tech Product Signal · 5 colors

Signal #63D4E8 Surface #14161A Highlight #F4F6F8 Secondary #596672 Accent #99FAFF

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

Minimal Editorial Surface · 5 colors

Surface #F6F4EF Accent #63D4E8 Secondary #D4F6FD Support #979286 Ink #16140F

Sky Blue 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 Sky Blue carrying the quiet middle.

Modern Café Dominant · 5 colors

Dominant #63D4E8 Anchor #372C1D Surface #EBE5D0 Accent #7E9D73 Secondary #3A3933

Sky Blue anchors this café scheme as the warm mid-tone, lifted by latte cream and a muted sage accent and grounded by espresso brown and a warm charcoal.

Build a working theme in the generator →

Color Lab

How #63D4E8 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 20/100

Cool

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

Softness 65/100

High

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

Depth 19/100

Very low

Airy and open — recedes, leaves the composition light.

Naturalness 5/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 34/100

Low

A faint retro warmth without tipping into sepia.

Luxury 26/100

Low

Understated — leans refined without going austere.

Brand distinctiveness 41/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 24/100

Low

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

Surface fit 50/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 71/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #63D4E8

For UI

For branding

For interior

For fashion

People also use #63D4E8 with

Seafoam Green Cornflower Blue Terracotta 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 10.7:1. Use

Subtle surface Use #E4F4F7 for cards and hover fills. Tint 80

Avoid beside #64A8E8 — 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 #63D4E8 at work across the surfaces designers actually ship.

Website / UI

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Build faster.

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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: #63D4E8;
  --color-base-rgb: 99 212 232;
  --color-base-oklch: oklch(81.2% 0.106 210.8);
  --color-50: #F1FCFE;
  --color-100: #DBF6FB;
  --color-200: #B8EBF4;
  --color-300: #88D9E7;
  --color-400: #5CC4D6;
  --color-500: #39A8BC;
  --color-600: #33818F;
  --color-700: #2A5C65;
  --color-800: #1F3D42;
  --color-900: #152629;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  sky-blue: {
    50: '#F1FCFE',
    100: '#DBF6FB',
    200: '#B8EBF4',
    300: '#88D9E7',
    400: '#5CC4D6',
    500: '#39A8BC',
    600: '#33818F',
    700: '#2A5C65',
    800: '#1F3D42',
    900: '#152629',
  },
}

$base: #63D4E8;
$base-ink: #141310;
$base-50: #F1FCFE;
$base-100: #DBF6FB;
$base-200: #B8EBF4;
$base-300: #88D9E7;
$base-400: #5CC4D6;
$base-500: #39A8BC;
$base-600: #33818F;
$base-700: #2A5C65;
$base-800: #1F3D42;
$base-900: #152629;
$base-hover: #2AC4DF;
$base-subtle: #D5EFF3;

{
    "color": {
        "base": {
            "value": "#63D4E8",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1FCFE",
                "type": "color"
            },
            "100": {
                "value": "#DBF6FB",
                "type": "color"
            },
            "200": {
                "value": "#B8EBF4",
                "type": "color"
            },
            "300": {
                "value": "#88D9E7",
                "type": "color"
            },
            "400": {
                "value": "#5CC4D6",
                "type": "color"
            },
            "500": {
                "value": "#39A8BC",
                "type": "color"
            },
            "600": {
                "value": "#33818F",
                "type": "color"
            },
            "700": {
                "value": "#2A5C65",
                "type": "color"
            },
            "800": {
                "value": "#1F3D42",
                "type": "color"
            },
            "900": {
                "value": "#152629",
                "type": "color"
            }
        }
    }
}