What color is #429DDF?

#429DDF is a medium, vivid cyan-blue. In RGB it is rgb(66, 157, 223), and in HSL hsl(205, 71%, 57%).

Is #429DDF accessible as text?

On white, #429DDF has a contrast ratio of 2.95:1 (fails WCAG AA for body text); on black it is 7.12:1 (passes). For text placed on #429DDF, use black for the best readability.

What is the closest Tailwind color to #429DDF?

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

What colors go well with #429DDF?

#429DDF pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #DF8443. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #429DDF below.

Is #429DDF good for buttons?

#429DDF works well for buttons and highlights, but use black text on #429DDF — white text only reaches 2.95:1, below the 4.5:1 needed for normal-size labels.

Is #429DDF the same as CSS cornflowerblue?

No — #429DDF is not the CSS named color cornflowerblue, but cornflowerblue (#6495ED) is the closest CSS named color.

#429DDF Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #429DDF

Not just a swatch — here's how #429DDF works with other colors. Named schemes with #429DDF in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #429DDF Accent #A5C4C0 Surface #DEDBBF Secondary #9AA0A0 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.

Nordic Calm Accent · 5 colors

Accent #429DDF 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.

Tech Product Signal · 5 colors

Signal #429DDF Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #75C3FF

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 #429DDF Secondary #A9C5DD 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.

Modern Café Dominant · 5 colors

Dominant #429DDF Anchor #3B2924 Surface #EAE5D0 Accent #7A9E77 Secondary #393933

Carolina 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 #429DDF 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 12/100

Cool

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

Softness 51/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 34/100

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 38/100

Low

A faint retro warmth without tipping into sepia.

Luxury 40/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 50/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 71/100

High

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

Surface fit 29/100

Low

Too saturated or mid-toned for big areas — keep it to accents.

Print safety 70/100

High

Prints close, with a slight loss of vibrancy.

Pairs with #429DDF

For UI

For branding

For interior

For fashion

People also use #429DDF with

Turquoise Neon Blue Peru 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 6.3:1. Use

Subtle surface Use #DEEBF4 for cards and hover fills. Tint 80

Avoid beside #436ADF — 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 #429DDF 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: #429DDF;
  --color-base-rgb: 66 157 223;
  --color-base-oklch: oklch(67.1% 0.130 243.6);
  --color-50: #F1F8FD;
  --color-100: #DBEDFA;
  --color-200: #B9DBF3;
  --color-300: #8ABFE5;
  --color-400: #5EA3D4;
  --color-500: #3C85B9;
  --color-600: #35688D;
  --color-700: #2B4C64;
  --color-800: #1F3342;
  --color-900: #152028;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  carolina-blue: {
    50: '#F1F8FD',
    100: '#DBEDFA',
    200: '#B9DBF3',
    300: '#8ABFE5',
    400: '#5EA3D4',
    500: '#3C85B9',
    600: '#35688D',
    700: '#2B4C64',
    800: '#1F3342',
    900: '#152028',
  },
}

$base: #429DDF;
$base-ink: #141310;
$base-50: #F1F8FD;
$base-100: #DBEDFA;
$base-200: #B9DBF3;
$base-300: #8ABFE5;
$base-400: #5EA3D4;
$base-500: #3C85B9;
$base-600: #35688D;
$base-700: #2B4C64;
$base-800: #1F3342;
$base-900: #152028;
$base-hover: #2282C7;
$base-subtle: #CCE1F0;

{
    "color": {
        "base": {
            "value": "#429DDF",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1F8FD",
                "type": "color"
            },
            "100": {
                "value": "#DBEDFA",
                "type": "color"
            },
            "200": {
                "value": "#B9DBF3",
                "type": "color"
            },
            "300": {
                "value": "#8ABFE5",
                "type": "color"
            },
            "400": {
                "value": "#5EA3D4",
                "type": "color"
            },
            "500": {
                "value": "#3C85B9",
                "type": "color"
            },
            "600": {
                "value": "#35688D",
                "type": "color"
            },
            "700": {
                "value": "#2B4C64",
                "type": "color"
            },
            "800": {
                "value": "#1F3342",
                "type": "color"
            },
            "900": {
                "value": "#152028",
                "type": "color"
            }
        }
    }
}

Palettes built on #429DDF

Color Lab

Pairs with #429DDF

UI roles & guardrails

In real applications

Scales

Every model

Export