What color is #289AA4?

#289AA4 is a medium cyan. In RGB it is rgb(40, 154, 164), and in HSL hsl(185, 61%, 40%).

Is #289AA4 accessible as text?

On white, #289AA4 has a contrast ratio of 3.36:1 (fails WCAG AA for body text); on black it is 6.25:1 (passes). For text placed on #289AA4, use black for the best readability.

What is the closest Tailwind color to #289AA4?

The nearest Tailwind CSS token is teal-600 (#009689).

What colors go well with #289AA4?

#289AA4 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #A43228. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #289AA4 below.

Is #289AA4 good for buttons?

#289AA4 works well for buttons and highlights, but use black text on #289AA4 — white text only reaches 3.36:1, below the 4.5:1 needed for normal-size labels.

Is #289AA4 the same as CSS cadetblue?

No — #289AA4 is not the CSS named color cadetblue, but cadetblue (#5F9EA0) is the closest CSS named color.

#289AA4 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #289AA4

Not just a swatch — here's how #289AA4 works with other colors. Named schemes with #289AA4 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #289AA4 Accent #A6C4BE Surface #DFDABE Secondary #9AA0A0 Anchor #1D3549

Bondi 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 #289AA4 Secondary #AEB4B8 Surface #F1F2F0 Support #7A94A5 Anchor #2E3236

Bondi 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 #289AA4 Surface #14161A Highlight #F4F6F8 Secondary #596671 Accent #63BEC7

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.

Minimal Editorial Surface · 5 colors

Surface #F6F4EF Accent #289AA4 Secondary #9CBBBE Support #979286 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.

Modern Café Dominant · 5 colors

Dominant #289AA4 Anchor #372C1D Surface #EBE5D0 Accent #7F9D73 Secondary #3A3933

Bondi 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 #289AA4 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 24/100

Cool

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

Softness 53/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 37/100

Low

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

Naturalness 8/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 52/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 44/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 38/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 78/100

High

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

Surface fit 35/100

Low

Usable as a tinted surface in measured doses.

Print safety 74/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #289AA4

For UI

For branding

For interior

For fashion

People also use #289AA4 with

Emerald Green Sapphire Blue Firebrick 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 5.5:1. Use

Subtle surface Use #D3ECEE for cards and hover fills. Tint 80

Avoid beside #2870A4 — 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 #289AA4 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: #289AA4;
  --color-base-rgb: 40 154 164;
  --color-base-oklch: oklch(63.0% 0.098 203.8);
  --color-50: #F2FCFC;
  --color-100: #DDF6F8;
  --color-200: #BDEBEF;
  --color-300: #90D8DF;
  --color-400: #67C3CB;
  --color-500: #45A7B0;
  --color-600: #3B8187;
  --color-700: #2F5C60;
  --color-800: #223D3F;
  --color-900: #162527;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  bondi-blue: {
    50: '#F2FCFC',
    100: '#DDF6F8',
    200: '#BDEBEF',
    300: '#90D8DF',
    400: '#67C3CB',
    500: '#45A7B0',
    600: '#3B8187',
    700: '#2F5C60',
    800: '#223D3F',
    900: '#162527',
  },
}

$base: #289AA4;
$base-ink: #141310;
$base-50: #F2FCFC;
$base-100: #DDF6F8;
$base-200: #BDEBEF;
$base-300: #90D8DF;
$base-400: #67C3CB;
$base-500: #45A7B0;
$base-600: #3B8187;
$base-700: #2F5C60;
$base-800: #223D3F;
$base-900: #162527;
$base-hover: #207B83;
$base-subtle: #BCE3E6;

{
    "color": {
        "base": {
            "value": "#289AA4",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F2FCFC",
                "type": "color"
            },
            "100": {
                "value": "#DDF6F8",
                "type": "color"
            },
            "200": {
                "value": "#BDEBEF",
                "type": "color"
            },
            "300": {
                "value": "#90D8DF",
                "type": "color"
            },
            "400": {
                "value": "#67C3CB",
                "type": "color"
            },
            "500": {
                "value": "#45A7B0",
                "type": "color"
            },
            "600": {
                "value": "#3B8187",
                "type": "color"
            },
            "700": {
                "value": "#2F5C60",
                "type": "color"
            },
            "800": {
                "value": "#223D3F",
                "type": "color"
            },
            "900": {
                "value": "#162527",
                "type": "color"
            }
        }
    }
}

Palettes built on #289AA4

Color Lab

Pairs with #289AA4

UI roles & guardrails

In real applications

Scales

Every model

Export