What color is #259DBB?

#259DBB is a medium cyan. In RGB it is rgb(37, 157, 187), and in HSL hsl(192, 67%, 44%).

Is #259DBB accessible as text?

On white, #259DBB has a contrast ratio of 3.17:1 (fails WCAG AA for body text); on black it is 6.62:1 (passes). For text placed on #259DBB, use black for the best readability.

What is the closest Tailwind color to #259DBB?

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

What colors go well with #259DBB?

#259DBB pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #BB4325. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #259DBB below.

Is #259DBB good for buttons?

#259DBB works well for buttons and highlights, but use black text on #259DBB — white text only reaches 3.17:1, below the 4.5:1 needed for normal-size labels.

Is #259DBB the same as CSS cadetblue?

No — #259DBB is not the CSS named color cadetblue, but cadetblue (#5F9EA0) is the closest CSS named color.

#259DBB Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #259DBB

Not just a swatch — here's how #259DBB works with other colors. Named schemes with #259DBB in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #259DBB 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.

Nordic Calm Accent · 5 colors

Accent #259DBB Secondary #AEB4B8 Surface #F1F2F0 Support #7B94A5 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 #259DBB Surface #14161A Highlight #F4F6F8 Secondary #596672 Accent #63C2DE

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 #259DBB Secondary #9FC0CA 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.

Modern Café Dominant · 5 colors

Dominant #259DBB Anchor #372C1D Surface #EBE5D0 Accent #7D9D74 Secondary #393933

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 #259DBB 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 53/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 35/100

Low

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

Naturalness 2/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 46/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 43/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 42/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 76/100

High

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

Surface fit 33/100

Low

Usable as a tinted surface in measured doses.

Print safety 71/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #259DBB

For UI

For branding

For interior

For fashion

People also use #259DBB with

Emerald Green Sapphire 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 5.9:1. Use

Subtle surface Use #D5EBF0 for cards and hover fills. Tint 80

Avoid beside #256BBB — 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 #259DBB 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: #259DBB;
  --color-base-rgb: 37 157 187;
  --color-base-oklch: oklch(64.6% 0.108 219.4);
  --color-50: #F2FBFD;
  --color-100: #DCF3F9;
  --color-200: #BBE7F1;
  --color-300: #8CD2E3;
  --color-400: #62BAD0;
  --color-500: #3F9EB5;
  --color-600: #377A8B;
  --color-700: #2C5862;
  --color-800: #203A41;
  --color-900: #162428;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  bondi-blue: {
    50: '#F2FBFD',
    100: '#DCF3F9',
    200: '#BBE7F1',
    300: '#8CD2E3',
    400: '#62BAD0',
    500: '#3F9EB5',
    600: '#377A8B',
    700: '#2C5862',
    800: '#203A41',
    900: '#162428',
  },
}

$base: #259DBB;
$base-ink: #141310;
$base-50: #F2FBFD;
$base-100: #DCF3F9;
$base-200: #BBE7F1;
$base-300: #8CD2E3;
$base-400: #62BAD0;
$base-500: #3F9EB5;
$base-600: #377A8B;
$base-700: #2C5862;
$base-800: #203A41;
$base-900: #162428;
$base-hover: #1E7E96;
$base-subtle: #BEE1EA;

{
    "color": {
        "base": {
            "value": "#259DBB",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F2FBFD",
                "type": "color"
            },
            "100": {
                "value": "#DCF3F9",
                "type": "color"
            },
            "200": {
                "value": "#BBE7F1",
                "type": "color"
            },
            "300": {
                "value": "#8CD2E3",
                "type": "color"
            },
            "400": {
                "value": "#62BAD0",
                "type": "color"
            },
            "500": {
                "value": "#3F9EB5",
                "type": "color"
            },
            "600": {
                "value": "#377A8B",
                "type": "color"
            },
            "700": {
                "value": "#2C5862",
                "type": "color"
            },
            "800": {
                "value": "#203A41",
                "type": "color"
            },
            "900": {
                "value": "#162428",
                "type": "color"
            }
        }
    }
}

Palettes built on #259DBB

Color Lab

Pairs with #259DBB

UI roles & guardrails

In real applications

Scales

Every model

Export