What color is #138CAA?

#138CAA is a dark, vivid cyan. In RGB it is rgb(19, 140, 170), and in HSL hsl(192, 80%, 37%).

Is #138CAA accessible as text?

On white, #138CAA has a contrast ratio of 3.92:1 (fails WCAG AA for body text); on black it is 5.36:1 (passes). For text placed on #138CAA, use black for the best readability.

What is the closest Tailwind color to #138CAA?

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

What colors go well with #138CAA?

#138CAA pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #AA3113. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #138CAA below.

Is #138CAA good for buttons?

#138CAA works well for buttons and highlights, but use black text on #138CAA — white text only reaches 3.92:1, below the 4.5:1 needed for normal-size labels.

Is #138CAA the same as CSS steelblue?

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

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

Palettes built on #138CAA

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

Coastal Morning Lead · 5 colors

Lead #138CAA Accent #A6C4BF Surface #DFDABF Secondary #9AA0A0 Anchor #1E354A

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 #138CAA Surface #14161A Highlight #F4F6F8 Secondary #596672 Accent #56B0CC

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 #138CAA Secondary #705116 Surface #E2DCC0 Accent #385244 Anchor #56233E

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 #138CAA Surface #EEE9D6 Anchor #592248 Accent #E3C2CD 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 #138CAA Secondary #90AFB9 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 #138CAA 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 19/100

Cool

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

Softness 49/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 41/100

Moderate

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

Naturalness 2/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 51/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 48/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 28/100

Low

Quiet and neutral — a supporting tone, not a signature.

UI accent fit 89/100

Very 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 72/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #138CAA

For UI

For branding

For interior

For fashion

People also use #138CAA with

Emerald Green Egyptian Blue Chestnut 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 4.7:1. Use

Subtle surface Use #CCEAF1 for cards and hover fills. Tint 80

Avoid beside #1359AA — 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 #138CAA 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: #138CAA;
  --color-base-rgb: 19 140 170;
  --color-base-oklch: oklch(59.4% 0.105 220.8);
  --color-50: #F1FBFE;
  --color-100: #D9F5FC;
  --color-200: #B6EAF7;
  --color-300: #84D7EB;
  --color-400: #57C1DB;
  --color-500: #34A5C1;
  --color-600: #2F7F93;
  --color-700: #275B68;
  --color-800: #1D3C44;
  --color-900: #142529;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  bondi-blue: {
    50: '#F1FBFE',
    100: '#D9F5FC',
    200: '#B6EAF7',
    300: '#84D7EB',
    400: '#57C1DB',
    500: '#34A5C1',
    600: '#2F7F93',
    700: '#275B68',
    800: '#1D3C44',
    900: '#142529',
  },
}

$base: #138CAA;
$base-ink: #141310;
$base-50: #F1FBFE;
$base-100: #D9F5FC;
$base-200: #B6EAF7;
$base-300: #84D7EB;
$base-400: #57C1DB;
$base-500: #34A5C1;
$base-600: #2F7F93;
$base-700: #275B68;
$base-800: #1D3C44;
$base-900: #142529;
$base-hover: #0F7088;
$base-subtle: #B2E0EC;

{
    "color": {
        "base": {
            "value": "#138CAA",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1FBFE",
                "type": "color"
            },
            "100": {
                "value": "#D9F5FC",
                "type": "color"
            },
            "200": {
                "value": "#B6EAF7",
                "type": "color"
            },
            "300": {
                "value": "#84D7EB",
                "type": "color"
            },
            "400": {
                "value": "#57C1DB",
                "type": "color"
            },
            "500": {
                "value": "#34A5C1",
                "type": "color"
            },
            "600": {
                "value": "#2F7F93",
                "type": "color"
            },
            "700": {
                "value": "#275B68",
                "type": "color"
            },
            "800": {
                "value": "#1D3C44",
                "type": "color"
            },
            "900": {
                "value": "#142529",
                "type": "color"
            }
        }
    }
}

Palettes built on #138CAA

Color Lab

Pairs with #138CAA

UI roles & guardrails

In real applications

Scales

Every model

Export