What color is #338BD2?

#338BD2 is a medium cyan-blue. In RGB it is rgb(51, 139, 210), and in HSL hsl(207, 64%, 51%).

Is #338BD2 accessible as text?

On white, #338BD2 has a contrast ratio of 3.64:1 (fails WCAG AA for body text); on black it is 5.76:1 (passes). For text placed on #338BD2, use black for the best readability.

What is the closest Tailwind color to #338BD2?

The nearest Tailwind CSS token is sky-600 (#0084D1).

What colors go well with #338BD2?

#338BD2 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #D27A32. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #338BD2 below.

Is #338BD2 good for buttons?

#338BD2 works well for buttons and highlights, but use black text on #338BD2 — white text only reaches 3.64:1, below the 4.5:1 needed for normal-size labels.

Is #338BD2 the same as CSS steelblue?

No — #338BD2 is not the CSS named color steelblue, but steelblue (#4682B4) is the closest CSS named color.

#338BD2 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #338BD2

Not just a swatch — here's how #338BD2 works with other colors. Named schemes with #338BD2 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #338BD2 Accent #A5C4C0 Surface #DDDBBF Secondary #9AA0A1 Anchor #20344A

Ocean Blue opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.

Tech Product Signal · 5 colors

Signal #338BD2 Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #66B1F3

Ocean 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 Ocean Blue.

Vintage Leather Lead · 5 colors

Lead #338BD2 Secondary #7F4438 Surface #E1DDC0 Accent #375245 Anchor #57233C

Ocean Blue plays the worn-leather lead, deepened by saddle brown and an oxblood anchor, softened by aged cream and cooled by a muted forest green.

Berry & Cream Lead · 5 colors

Lead #338BD2 Surface #EDE9D6 Anchor #5A2246 Accent #E4C2CB Secondary #322B2F

Ocean Blue sits between cream and a deep berry here, softened by a blush accent and grounded by charcoal.

Minimal Editorial Surface · 5 colors

Surface #F6F4EF Accent #338BD2 Secondary #99B4CE Support #969386 Ink #16140F

Ocean 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 Ocean Blue carrying the quiet middle.

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Color Lab

How #338BD2 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 11/100

Cool

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

Softness 47/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 39/100

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 41/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 45/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 37/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 87/100

Very high

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

Surface fit 22/100

Low

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

Print safety 69/100

High

Prints close, with a slight loss of vibrancy.

Pairs with #338BD2

For UI

For branding

For interior

For fashion

People also use #338BD2 with

Turquoise Cerulean Bronze 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 5.1:1. Use

Subtle surface Use #DAE7F2 for cards and hover fills. Tint 80

Avoid beside #3255D2 — 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 #338BD2 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: #338BD2;
  --color-base-rgb: 51 139 210;
  --color-base-oklch: oklch(61.8% 0.136 246.9);
  --color-50: #F2F8FD;
  --color-100: #DDECF8;
  --color-200: #BCD9F0;
  --color-300: #8EBCE1;
  --color-400: #649ECE;
  --color-500: #4280B3;
  --color-600: #396589;
  --color-700: #2E4A61;
  --color-800: #213240;
  --color-900: #161F27;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  ocean-blue: {
    50: '#F2F8FD',
    100: '#DDECF8',
    200: '#BCD9F0',
    300: '#8EBCE1',
    400: '#649ECE',
    500: '#4280B3',
    600: '#396589',
    700: '#2E4A61',
    800: '#213240',
    900: '#161F27',
  },
}

$base: #338BD2;
$base-ink: #141310;
$base-50: #F2F8FD;
$base-100: #DDECF8;
$base-200: #BCD9F0;
$base-300: #8EBCE1;
$base-400: #649ECE;
$base-500: #4280B3;
$base-600: #396589;
$base-700: #2E4A61;
$base-800: #213240;
$base-900: #161F27;
$base-hover: #256FAB;
$base-subtle: #C7DBEC;

{
    "color": {
        "base": {
            "value": "#338BD2",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F2F8FD",
                "type": "color"
            },
            "100": {
                "value": "#DDECF8",
                "type": "color"
            },
            "200": {
                "value": "#BCD9F0",
                "type": "color"
            },
            "300": {
                "value": "#8EBCE1",
                "type": "color"
            },
            "400": {
                "value": "#649ECE",
                "type": "color"
            },
            "500": {
                "value": "#4280B3",
                "type": "color"
            },
            "600": {
                "value": "#396589",
                "type": "color"
            },
            "700": {
                "value": "#2E4A61",
                "type": "color"
            },
            "800": {
                "value": "#213240",
                "type": "color"
            },
            "900": {
                "value": "#161F27",
                "type": "color"
            }
        }
    }
}

Palettes built on #338BD2

Color Lab

Pairs with #338BD2

UI roles & guardrails

In real applications

Scales

Every model

Export