What color is #339DC7?

#339DC7 is a medium cyan-blue. In RGB it is rgb(51, 157, 199), and in HSL hsl(197, 59%, 49%).

Is #339DC7 accessible as text?

On white, #339DC7 has a contrast ratio of 3.09:1 (fails WCAG AA for body text); on black it is 6.79:1 (passes). For text placed on #339DC7, use black for the best readability.

What is the closest Tailwind color to #339DC7?

The nearest Tailwind CSS token is cyan-600 (#0092B8).

What colors go well with #339DC7?

#339DC7 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #C75D33. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #339DC7 below.

Is #339DC7 good for buttons?

#339DC7 works well for buttons and highlights, but use black text on #339DC7 — white text only reaches 3.09:1, below the 4.5:1 needed for normal-size labels.

Is #339DC7 the same as CSS cadetblue?

No — #339DC7 is not the CSS named color cadetblue, but cadetblue (#5F9EA0) is the closest CSS named color.

#339DC7 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #339DC7

Not just a swatch — here's how #339DC7 works with other colors. Named schemes with #339DC7 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #339DC7 Accent #A6C4BF Surface #DEDABF Secondary #9AA0A0 Anchor #1F344A

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 #339DC7 Secondary #AEB4B8 Surface #F1F2F0 Support #7B93A6 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 #339DC7 Surface #14161A Highlight #F4F6F8 Secondary #596672 Accent #6BC2E9

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 #339DC7 Secondary #A3C1D0 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 #339DC7 Anchor #372C1D Surface #EBE5D0 Accent #7C9D75 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 #339DC7 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 17/100

Cool

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

Softness 53/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 35/100

Low

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

Naturalness 1/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 44/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 43/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 43/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 74/100

High

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

Surface fit 33/100

Low

Usable as a tinted surface in measured doses.

Print safety 71/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #339DC7

For UI

For branding

For interior

For fashion

People also use #339DC7 with

Medium Aquamarine Cerulean Tawny Platinum 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 Fine for headings 24px+ on white. Pass

Background Pair with #141310 text at 6.0:1. Use

Subtle surface Use #DAEAF0 for cards and hover fills. Tint 80

Avoid beside #336CC7 — 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 #339DC7 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: #339DC7;
  --color-base-rgb: 51 157 199;
  --color-base-oklch: oklch(65.5% 0.112 229.0);
  --color-50: #F2F9FC;
  --color-100: #DEF0F7;
  --color-200: #BEE1EE;
  --color-300: #92C8DE;
  --color-400: #68AECA;
  --color-500: #4691AE;
  --color-600: #3C7186;
  --color-700: #30525F;
  --color-800: #22373F;
  --color-900: #172227;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  carolina-blue: {
    50: '#F2F9FC',
    100: '#DEF0F7',
    200: '#BEE1EE',
    300: '#92C8DE',
    400: '#68AECA',
    500: '#4691AE',
    600: '#3C7186',
    700: '#30525F',
    800: '#22373F',
    900: '#172227',
  },
}

$base: #339DC7;
$base-ink: #141310;
$base-50: #F2F9FC;
$base-100: #DEF0F7;
$base-200: #BEE1EE;
$base-300: #92C8DE;
$base-400: #68AECA;
$base-500: #4691AE;
$base-600: #3C7186;
$base-700: #30525F;
$base-800: #22373F;
$base-900: #172227;
$base-hover: #297E9F;
$base-subtle: #C6E0E9;

{
    "color": {
        "base": {
            "value": "#339DC7",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F2F9FC",
                "type": "color"
            },
            "100": {
                "value": "#DEF0F7",
                "type": "color"
            },
            "200": {
                "value": "#BEE1EE",
                "type": "color"
            },
            "300": {
                "value": "#92C8DE",
                "type": "color"
            },
            "400": {
                "value": "#68AECA",
                "type": "color"
            },
            "500": {
                "value": "#4691AE",
                "type": "color"
            },
            "600": {
                "value": "#3C7186",
                "type": "color"
            },
            "700": {
                "value": "#30525F",
                "type": "color"
            },
            "800": {
                "value": "#22373F",
                "type": "color"
            },
            "900": {
                "value": "#172227",
                "type": "color"
            }
        }
    }
}

Palettes built on #339DC7

Color Lab

Pairs with #339DC7

UI roles & guardrails

In real applications

Scales

Every model

Export