What color is #63B7EF?

#63B7EF is a light, vivid cyan-blue. In RGB it is rgb(99, 183, 239), and in HSL hsl(204, 81%, 66%).

Is #63B7EF accessible as text?

On white, #63B7EF has a contrast ratio of 2.20:1 (fails WCAG AA for body text); on black it is 9.55:1 (passes). For text placed on #63B7EF, use black for the best readability.

What is the closest Tailwind color to #63B7EF?

The nearest Tailwind CSS token is sky-400 (#00BCFF).

What colors go well with #63B7EF?

#63B7EF pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #EF9A62. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #63B7EF below.

Is #63B7EF good for buttons?

#63B7EF works well for buttons and highlights, but use black text on #63B7EF — white text only reaches 2.20:1, below the 4.5:1 needed for normal-size labels.

Is #63B7EF the same as CSS deepskyblue?

No — #63B7EF is not the CSS named color deepskyblue, but deepskyblue (#00BFFF) is the closest CSS named color.

#63B7EF Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #63B7EF

Not just a swatch — here's how #63B7EF works with other colors. Named schemes with #63B7EF in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #63B7EF Accent #A5C4C0 Surface #DEDABF Secondary #9AA0A0 Anchor #1F344A

Picton 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 #63B7EF Secondary #AEB4B8 Surface #F1F2F0 Support #7C93A6 Anchor #2E3236

Picton 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 #63B7EF Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #93DDFF

Picton 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 Picton Blue.

Minimal Editorial Surface · 5 colors

Surface #F6F4EF Accent #63B7EF Secondary #C3DFF3 Support #969386 Ink #16140F

Picton 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 Picton Blue carrying the quiet middle.

Modern Café Dominant · 5 colors

Dominant #63B7EF Anchor #3C2925 Surface #EAE5D0 Accent #7B9E77 Secondary #393933

Picton 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 #63B7EF 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 16/100

Cool

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

Softness 59/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 25/100

Low

Airy and open — recedes, leaves the composition light.

Naturalness 0/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 36/100

Low

A faint retro warmth without tipping into sepia.

Luxury 33/100

Low

Understated — leans refined without going austere.

Brand distinctiveness 44/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 42/100

Moderate

Workable accent with care around contrast.

Surface fit 41/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 72/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #63B7EF

For UI

For branding

For interior

For fashion

People also use #63B7EF with

Electric Blue Iris Buff Platinum Charcoal

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 8.4:1. Use

Subtle surface Use #E4F0F8 for cards and hover fills. Tint 80

Avoid beside #6288EF — 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 #63B7EF 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: #63B7EF;
  --color-base-rgb: 99 183 239;
  --color-base-oklch: oklch(74.9% 0.115 239.9);
  --color-50: #F1F9FE;
  --color-100: #D9EEFC;
  --color-200: #B5DDF7;
  --color-300: #83C2EC;
  --color-400: #56A6DC;
  --color-500: #3389C2;
  --color-600: #2E6B93;
  --color-700: #274E68;
  --color-800: #1D3444;
  --color-900: #14212A;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  picton-blue: {
    50: '#F1F9FE',
    100: '#D9EEFC',
    200: '#B5DDF7',
    300: '#83C2EC',
    400: '#56A6DC',
    500: '#3389C2',
    600: '#2E6B93',
    700: '#274E68',
    800: '#1D3444',
    900: '#14212A',
  },
}

$base: #63B7EF;
$base-ink: #141310;
$base-50: #F1F9FE;
$base-100: #D9EEFC;
$base-200: #B5DDF7;
$base-300: #83C2EC;
$base-400: #56A6DC;
$base-500: #3389C2;
$base-600: #2E6B93;
$base-700: #274E68;
$base-800: #1D3444;
$base-900: #14212A;
$base-hover: #259AE8;
$base-subtle: #D5E8F5;

{
    "color": {
        "base": {
            "value": "#63B7EF",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1F9FE",
                "type": "color"
            },
            "100": {
                "value": "#D9EEFC",
                "type": "color"
            },
            "200": {
                "value": "#B5DDF7",
                "type": "color"
            },
            "300": {
                "value": "#83C2EC",
                "type": "color"
            },
            "400": {
                "value": "#56A6DC",
                "type": "color"
            },
            "500": {
                "value": "#3389C2",
                "type": "color"
            },
            "600": {
                "value": "#2E6B93",
                "type": "color"
            },
            "700": {
                "value": "#274E68",
                "type": "color"
            },
            "800": {
                "value": "#1D3444",
                "type": "color"
            },
            "900": {
                "value": "#14212A",
                "type": "color"
            }
        }
    }
}

Palettes built on #63B7EF

Color Lab

Pairs with #63B7EF

UI roles & guardrails

In real applications

Scales

Every model

Export