What color is #3397EA?

#3397EA is a medium, vivid cyan-blue. In RGB it is rgb(51, 151, 234), and in HSL hsl(207, 81%, 56%).

Is #3397EA accessible as text?

On white, #3397EA has a contrast ratio of 3.11:1 (fails WCAG AA for body text); on black it is 6.76:1 (passes). For text placed on #3397EA, use black for the best readability.

What is the closest Tailwind color to #3397EA?

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

What colors go well with #3397EA?

#3397EA pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #EA8634. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #3397EA below.

Is #3397EA good for buttons?

#3397EA works well for buttons and highlights, but use black text on #3397EA — white text only reaches 3.11:1, below the 4.5:1 needed for normal-size labels.

Is #3397EA the same as CSS cornflowerblue?

No — #3397EA is not the CSS named color cornflowerblue, but cornflowerblue (#6495ED) is the closest CSS named color.

#3397EA Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #3397EA

Not just a swatch — here's how #3397EA works with other colors. Named schemes with #3397EA in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #3397EA Accent #A5C4C1 Surface #DDDBBF Secondary #9AA0A1 Anchor #20344A

Cornflower 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 #3397EA Secondary #AEB4B8 Surface #F1F2F0 Support #7C93A6 Anchor #2E3236

Cornflower 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 #3397EA Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #69BEFF

Cornflower 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 Cornflower Blue.

Minimal Editorial Surface · 5 colors

Surface #F6F4EF Accent #3397EA Secondary #A3C1DF Support #969386 Ink #16140F

Cornflower 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 Cornflower Blue carrying the quiet middle.

Modern Café Dominant · 5 colors

Dominant #3397EA Anchor #3B2924 Surface #EAE5D0 Accent #7A9E78 Secondary #393933

Cornflower 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 #3397EA 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 7/100

Cool

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

Softness 47/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 35/100

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 33/100

Low

A faint retro warmth without tipping into sepia.

Luxury 40/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 59/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 75/100

High

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

Surface fit 23/100

Low

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

Print safety 66/100

High

Prints close, with a slight loss of vibrancy.

Pairs with #3397EA

For UI

For branding

For interior

For fashion

People also use #3397EA with

Turquoise Ultramarine 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 Fine for headings 24px+ on white. Pass

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

Subtle surface Use #DBEAF6 for cards and hover fills. Tint 80

Avoid beside #345BEA — 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 #3397EA 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: #3397EA;
  --color-base-rgb: 51 151 234;
  --color-base-oklch: oklch(65.9% 0.153 248.1);
  --color-50: #F1F8FE;
  --color-100: #D9ECFC;
  --color-200: #B5D9F7;
  --color-300: #83BDEC;
  --color-400: #56A0DC;
  --color-500: #3382C2;
  --color-600: #2E6693;
  --color-700: #274B68;
  --color-800: #1D3244;
  --color-900: #14202A;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  cornflower-blue: {
    50: '#F1F8FE',
    100: '#D9ECFC',
    200: '#B5D9F7',
    300: '#83BDEC',
    400: '#56A0DC',
    500: '#3382C2',
    600: '#2E6693',
    700: '#274B68',
    800: '#1D3244',
    900: '#14202A',
  },
}

$base: #3397EA;
$base-ink: #141310;
$base-50: #F1F8FE;
$base-100: #D9ECFC;
$base-200: #B5D9F7;
$base-300: #83BDEC;
$base-400: #56A0DC;
$base-500: #3382C2;
$base-600: #2E6693;
$base-700: #274B68;
$base-800: #1D3244;
$base-900: #14202A;
$base-hover: #167BCF;
$base-subtle: #C9DFF2;

{
    "color": {
        "base": {
            "value": "#3397EA",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1F8FE",
                "type": "color"
            },
            "100": {
                "value": "#D9ECFC",
                "type": "color"
            },
            "200": {
                "value": "#B5D9F7",
                "type": "color"
            },
            "300": {
                "value": "#83BDEC",
                "type": "color"
            },
            "400": {
                "value": "#56A0DC",
                "type": "color"
            },
            "500": {
                "value": "#3382C2",
                "type": "color"
            },
            "600": {
                "value": "#2E6693",
                "type": "color"
            },
            "700": {
                "value": "#274B68",
                "type": "color"
            },
            "800": {
                "value": "#1D3244",
                "type": "color"
            },
            "900": {
                "value": "#14202A",
                "type": "color"
            }
        }
    }
}

Palettes built on #3397EA

Color Lab

Pairs with #3397EA

UI roles & guardrails

In real applications

Scales

Every model

Export