What color is #63B5CC?

#63B5CC is a medium cyan. In RGB it is rgb(99, 181, 204), and in HSL hsl(193, 51%, 59%).

Is #63B5CC accessible as text?

On white, #63B5CC has a contrast ratio of 2.33:1 (fails WCAG AA for body text); on black it is 9.01:1 (passes). For text placed on #63B5CC, use black for the best readability.

What is the closest Tailwind color to #63B5CC?

The nearest Tailwind CSS token is cyan-500 (#00B8DB).

What colors go well with #63B5CC?

#63B5CC pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #CC7861. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #63B5CC below.

Is #63B5CC good for buttons?

#63B5CC works well for buttons and highlights, but use black text on #63B5CC — white text only reaches 2.33:1, below the 4.5:1 needed for normal-size labels.

Is #63B5CC the same as CSS lightseagreen?

No — #63B5CC is not the CSS named color lightseagreen, but lightseagreen (#20B2AA) 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.

#63B5CC Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #63B5CC

Not just a swatch — here's how #63B5CC works with other colors. Named schemes with #63B5CC in its natural role, and a note on why the supporting colors balance it.

Nordic Calm Accent · 5 colors

Accent #63B5CC Secondary #AEB4B8 Surface #F1F2F0 Support #7B94A5 Anchor #2E3236

Iceberg 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 #63B5CC Accent #A6C4BF Surface #DFDABF Secondary #9AA0A0 Anchor #1E3549

Iceberg 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 #63B5CC Surface #ECEADC Highlight #F4F2E7 Secondary #B3B19F Ink #2A2723

Iceberg 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 #63B5CC Surface #14161A Highlight #F4F6F8 Secondary #596672 Accent #92DBF0

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

Minimal Editorial Surface · 5 colors

Surface #F6F4EF Accent #63B5CC Secondary #BFD9E2 Support #969386 Ink #16140F

Iceberg 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 Iceberg carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #63B5CC 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 25/100

Cool

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

Softness 62/100

High

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

Depth 27/100

Low

Airy and open — recedes, leaves the composition light.

Naturalness 2/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 44/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 34/100

Low

Understated — leans refined without going austere.

Brand distinctiveness 33/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 45/100

Moderate

Workable accent with care around contrast.

Surface fit 48/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 77/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #63B5CC

For UI

For branding

For interior

For fashion

People also use #63B5CC with

Medium Aquamarine Glaucous 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 8.0:1. Use

Subtle surface Use #E2EEF2 for cards and hover fills. Tint 80

Avoid beside #6191CC — 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 #63B5CC 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: #63B5CC;
  --color-base-rgb: 99 181 204;
  --color-base-oklch: oklch(73.0% 0.087 218.2);
  --color-50: #F3FAFC;
  --color-100: #E0F1F6;
  --color-200: #C1E2EB;
  --color-300: #97CAD9;
  --color-400: #6FB1C3;
  --color-500: #4E94A7;
  --color-600: #417381;
  --color-700: #33535C;
  --color-800: #24373D;
  --color-900: #182326;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  iceberg: {
    50: '#F3FAFC',
    100: '#E0F1F6',
    200: '#C1E2EB',
    300: '#97CAD9',
    400: '#6FB1C3',
    500: '#4E94A7',
    600: '#417381',
    700: '#33535C',
    800: '#24373D',
    900: '#182326',
  },
}

$base: #63B5CC;
$base-ink: #141310;
$base-50: #F3FAFC;
$base-100: #E0F1F6;
$base-200: #C1E2EB;
$base-300: #97CAD9;
$base-400: #6FB1C3;
$base-500: #4E94A7;
$base-600: #417381;
$base-700: #33535C;
$base-800: #24373D;
$base-900: #182326;
$base-hover: #3B9BB6;
$base-subtle: #D3E7EC;

{
    "color": {
        "base": {
            "value": "#63B5CC",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3FAFC",
                "type": "color"
            },
            "100": {
                "value": "#E0F1F6",
                "type": "color"
            },
            "200": {
                "value": "#C1E2EB",
                "type": "color"
            },
            "300": {
                "value": "#97CAD9",
                "type": "color"
            },
            "400": {
                "value": "#6FB1C3",
                "type": "color"
            },
            "500": {
                "value": "#4E94A7",
                "type": "color"
            },
            "600": {
                "value": "#417381",
                "type": "color"
            },
            "700": {
                "value": "#33535C",
                "type": "color"
            },
            "800": {
                "value": "#24373D",
                "type": "color"
            },
            "900": {
                "value": "#182326",
                "type": "color"
            }
        }
    }
}

Palettes built on #63B5CC

Color Lab

Pairs with #63B5CC

UI roles & guardrails

In real applications

Scales

Every model

Export