What color is #659CCC?

#659CCC is a medium blue. In RGB it is rgb(101, 156, 204), and in HSL hsl(208, 50%, 60%).

Is #659CCC accessible as text?

On white, #659CCC has a contrast ratio of 2.92:1 (fails WCAG AA for body text); on black it is 7.18:1 (passes). For text placed on #659CCC, use black for the best readability.

What is the closest Tailwind color to #659CCC?

The nearest Tailwind CSS token is sky-500 (#00A6F4).

What colors go well with #659CCC?

#659CCC pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #CC9666. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #659CCC below.

Is #659CCC good for buttons?

#659CCC works well for buttons and highlights, but use black text on #659CCC — white text only reaches 2.92:1, below the 4.5:1 needed for normal-size labels.

Is #659CCC the same as CSS cornflowerblue?

No — #659CCC is not the CSS named color cornflowerblue, but cornflowerblue (#6495ED) is the closest CSS named color.

#659CCC Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #659CCC

Not just a swatch — here's how #659CCC works with other colors. Named schemes with #659CCC in its natural role, and a note on why the supporting colors balance it.

Nordic Calm Accent · 5 colors

Accent #659CCC Secondary #AEB4B8 Surface #F1F2F0 Support #7C93A6 Anchor #2E3236

Carolina Blue 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 #659CCC Accent #A5C4C0 Surface #DDDBBF Secondary #9AA0A1 Anchor #20344A

Carolina Blue 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 #659CCC Surface #ECEADC Highlight #F4F2E7 Secondary #B2B2A0 Ink #2A2823

Carolina Blue 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 #659CCC Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #8FC2EE

Carolina 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 Carolina Blue.

Minimal Editorial Surface · 5 colors

Surface #F6F4EF Accent #659CCC Secondary #B2C5D6 Support #969386 Ink #16140F

Carolina 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 Carolina Blue carrying the quiet middle.

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Color Lab

How #659CCC 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 24/100

Cool

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

Softness 57/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 32/100

Low

Mid depth — usable as an accent or a muted ground.

Naturalness 0/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 49/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 40/100

Low

Understated — leans refined without going austere.

Brand distinctiveness 36/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 64/100

High

Strong interactive accent — visible and can carry a legible label.

Surface fit 41/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 79/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #659CCC

For UI

For branding

For interior

For fashion

People also use #659CCC with

Medium Turquoise Slate Blue Camel Gainsboro Charcoal

UI roles & guardrails

Primary action Safe as a filled button with near-black label. AA

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 6.4:1. Use

Subtle surface Use #E3EBF2 for cards and hover fills. Tint 80

Avoid beside #667ACC — 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 #659CCC 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

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Export

:root {
  --color-base: #659CCC;
  --color-base-rgb: 101 156 204;
  --color-base-oklch: oklch(67.4% 0.092 246.0);
  --color-50: #F3F8FC;
  --color-100: #E0EBF5;
  --color-200: #C2D8EB;
  --color-300: #97BAD8;
  --color-400: #709CC2;
  --color-500: #4E7DA6;
  --color-600: #426380;
  --color-700: #33495C;
  --color-800: #24313C;
  --color-900: #181F25;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  carolina-blue: {
    50: '#F3F8FC',
    100: '#E0EBF5',
    200: '#C2D8EB',
    300: '#97BAD8',
    400: '#709CC2',
    500: '#4E7DA6',
    600: '#426380',
    700: '#33495C',
    800: '#24313C',
    900: '#181F25',
  },
}

$base: #659CCC;
$base-ink: #141310;
$base-50: #F3F8FC;
$base-100: #E0EBF5;
$base-200: #C2D8EB;
$base-300: #97BAD8;
$base-400: #709CC2;
$base-500: #4E7DA6;
$base-600: #426380;
$base-700: #33495C;
$base-800: #24313C;
$base-900: #181F25;
$base-hover: #3D7EB8;
$base-subtle: #D5E1EC;

{
    "color": {
        "base": {
            "value": "#659CCC",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3F8FC",
                "type": "color"
            },
            "100": {
                "value": "#E0EBF5",
                "type": "color"
            },
            "200": {
                "value": "#C2D8EB",
                "type": "color"
            },
            "300": {
                "value": "#97BAD8",
                "type": "color"
            },
            "400": {
                "value": "#709CC2",
                "type": "color"
            },
            "500": {
                "value": "#4E7DA6",
                "type": "color"
            },
            "600": {
                "value": "#426380",
                "type": "color"
            },
            "700": {
                "value": "#33495C",
                "type": "color"
            },
            "800": {
                "value": "#24313C",
                "type": "color"
            },
            "900": {
                "value": "#181F25",
                "type": "color"
            }
        }
    }
}

Palettes built on #659CCC

Color Lab

Pairs with #659CCC

UI roles & guardrails

In real applications

Scales

Every model

Export