What color is #138FBC?

#138FBC is a medium, vivid cyan-blue. In RGB it is rgb(19, 143, 188), and in HSL hsl(196, 82%, 41%).

Is #138FBC accessible as text?

On white, #138FBC has a contrast ratio of 3.70:1 (fails WCAG AA for body text); on black it is 5.68:1 (passes). For text placed on #138FBC, use black for the best readability.

What is the closest Tailwind color to #138FBC?

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

What colors go well with #138FBC?

#138FBC pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #BE4113. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #138FBC below.

Is #138FBC good for buttons?

#138FBC works well for buttons and highlights, but use black text on #138FBC — white text only reaches 3.70:1, below the 4.5:1 needed for normal-size labels.

Is #138FBC the same as CSS steelblue?

No — #138FBC is not the CSS named color steelblue, but steelblue (#4682B4) is the closest CSS named color.

#138FBC Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #138FBC

Not just a swatch — here's how #138FBC works with other colors. Named schemes with #138FBC in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #138FBC Accent #A6C4BF Surface #DEDABF Secondary #9AA0A0 Anchor #1F344A

Bondi 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 #138FBC Surface #14161A Highlight #F4F6F8 Secondary #596672 Accent #58B4DE

Bondi 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 Bondi Blue.

Vintage Leather Lead · 5 colors

Lead #138FBC Secondary #6F5216 Surface #E2DCC0 Accent #385244 Anchor #56233D

Bondi 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 #138FBC Surface #EEE9D6 Anchor #592247 Accent #E4C2CC Secondary #322B30

Bondi 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 #138FBC Secondary #94B3C3 Support #969386 Ink #16140F

Bondi 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 Bondi Blue carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #138FBC 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 15/100

Cool

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

Softness 49/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 39/100

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 46/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 47/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 32/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 88/100

Very high

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

Surface fit 27/100

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 #138FBC

For UI

For branding

For interior

For fashion

People also use #138FBC with

Turquoise Egyptian Blue Rust Platinum Dark Slate Gray

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 5.0:1. Use

Subtle surface Use #CFE9F3 for cards and hover fills. Tint 80

Avoid beside #1357BE — 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 #138FBC 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: #138FBC;
  --color-base-rgb: 19 143 188;
  --color-base-oklch: oklch(61.0% 0.118 230.3);
  --color-50: #F0FBFE;
  --color-100: #D9F3FC;
  --color-200: #B5E6F8;
  --color-300: #83D0ED;
  --color-400: #55B9DD;
  --color-500: #329CC3;
  --color-600: #2E7994;
  --color-700: #265769;
  --color-800: #1D3A44;
  --color-900: #14242A;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  bondi-blue: {
    50: '#F0FBFE',
    100: '#D9F3FC',
    200: '#B5E6F8',
    300: '#83D0ED',
    400: '#55B9DD',
    500: '#329CC3',
    600: '#2E7994',
    700: '#265769',
    800: '#1D3A44',
    900: '#14242A',
  },
}

$base: #138FBC;
$base-ink: #141310;
$base-50: #F0FBFE;
$base-100: #D9F3FC;
$base-200: #B5E6F8;
$base-300: #83D0ED;
$base-400: #55B9DD;
$base-500: #329CC3;
$base-600: #2E7994;
$base-700: #265769;
$base-800: #1D3A44;
$base-900: #14242A;
$base-hover: #0F7498;
$base-subtle: #B6DFEE;

{
    "color": {
        "base": {
            "value": "#138FBC",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0FBFE",
                "type": "color"
            },
            "100": {
                "value": "#D9F3FC",
                "type": "color"
            },
            "200": {
                "value": "#B5E6F8",
                "type": "color"
            },
            "300": {
                "value": "#83D0ED",
                "type": "color"
            },
            "400": {
                "value": "#55B9DD",
                "type": "color"
            },
            "500": {
                "value": "#329CC3",
                "type": "color"
            },
            "600": {
                "value": "#2E7994",
                "type": "color"
            },
            "700": {
                "value": "#265769",
                "type": "color"
            },
            "800": {
                "value": "#1D3A44",
                "type": "color"
            },
            "900": {
                "value": "#14242A",
                "type": "color"
            }
        }
    }
}

Palettes built on #138FBC

Color Lab

Pairs with #138FBC

UI roles & guardrails

In real applications

Scales

Every model

Export