What color is #128DAE?

#128DAE is a dark, vivid cyan. In RGB it is rgb(18, 141, 174), and in HSL hsl(193, 81%, 38%).

Is #128DAE accessible as text?

On white, #128DAE has a contrast ratio of 3.86:1 (fails WCAG AA for body text); on black it is 5.45:1 (passes). For text placed on #128DAE, use black for the best readability.

What is the closest Tailwind color to #128DAE?

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

What colors go well with #128DAE?

#128DAE pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #AF3412. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #128DAE below.

Is #128DAE good for buttons?

#128DAE works well for buttons and highlights, but use black text on #128DAE — white text only reaches 3.86:1, below the 4.5:1 needed for normal-size labels.

Is #128DAE the same as CSS steelblue?

No — #128DAE is not the CSS named color steelblue, but steelblue (#4682B4) is the closest CSS named color.

#128DAE Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #128DAE

Not just a swatch — here's how #128DAE works with other colors. Named schemes with #128DAE in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #128DAE Accent #A6C4BF Surface #DEDABF 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 #128DAE Surface #14161A Highlight #F4F6F8 Secondary #596672 Accent #57B1D0

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 #128DAE Secondary #6F5116 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 #128DAE Surface #EEE9D6 Anchor #592248 Accent #E4C2CD 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 #128DAE Secondary #91B0BC 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 #128DAE 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 18/100

Cool

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

Softness 49/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 40/100

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 50/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 48/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 29/100

Low

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

UI accent fit 88/100

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 71/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #128DAE

For UI

For branding

For interior

For fashion

People also use #128DAE 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 4.8:1. Use

Subtle surface Use #CDEAF2 for cards and hover fills. Tint 80

Avoid beside #1259AF — 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 #128DAE 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: #128DAE;
  --color-base-rgb: 18 141 174;
  --color-base-oklch: oklch(59.8% 0.108 222.8);
  --color-50: #F1FBFE;
  --color-100: #D9F5FC;
  --color-200: #B5E9F7;
  --color-300: #83D5EC;
  --color-400: #56BFDC;
  --color-500: #33A3C2;
  --color-600: #2E7D93;
  --color-700: #275A68;
  --color-800: #1D3B44;
  --color-900: #14252A;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  bondi-blue: {
    50: '#F1FBFE',
    100: '#D9F5FC',
    200: '#B5E9F7',
    300: '#83D5EC',
    400: '#56BFDC',
    500: '#33A3C2',
    600: '#2E7D93',
    700: '#275A68',
    800: '#1D3B44',
    900: '#14252A',
  },
}

$base: #128DAE;
$base-ink: #141310;
$base-50: #F1FBFE;
$base-100: #D9F5FC;
$base-200: #B5E9F7;
$base-300: #83D5EC;
$base-400: #56BFDC;
$base-500: #33A3C2;
$base-600: #2E7D93;
$base-700: #275A68;
$base-800: #1D3B44;
$base-900: #14252A;
$base-hover: #0F718C;
$base-subtle: #B2E0ED;

{
    "color": {
        "base": {
            "value": "#128DAE",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1FBFE",
                "type": "color"
            },
            "100": {
                "value": "#D9F5FC",
                "type": "color"
            },
            "200": {
                "value": "#B5E9F7",
                "type": "color"
            },
            "300": {
                "value": "#83D5EC",
                "type": "color"
            },
            "400": {
                "value": "#56BFDC",
                "type": "color"
            },
            "500": {
                "value": "#33A3C2",
                "type": "color"
            },
            "600": {
                "value": "#2E7D93",
                "type": "color"
            },
            "700": {
                "value": "#275A68",
                "type": "color"
            },
            "800": {
                "value": "#1D3B44",
                "type": "color"
            },
            "900": {
                "value": "#14252A",
                "type": "color"
            }
        }
    }
}

Palettes built on #128DAE

Color Lab

Pairs with #128DAE

UI roles & guardrails

In real applications

Scales

Every model

Export