What color is #18959E?

#18959E is a dark, vivid cyan. In RGB it is rgb(24, 149, 158), and in HSL hsl(184, 74%, 36%).

Is #18959E accessible as text?

On white, #18959E has a contrast ratio of 3.60:1 (fails WCAG AA for body text); on black it is 5.83:1 (passes). For text placed on #18959E, use black for the best readability.

What is the closest Tailwind color to #18959E?

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

What colors go well with #18959E?

#18959E pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #A02118. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #18959E below.

Is #18959E good for buttons?

#18959E works well for buttons and highlights, but use black text on #18959E — white text only reaches 3.60:1, below the 4.5:1 needed for normal-size labels.

Is #18959E the same as CSS darkcyan?

No — #18959E is not the CSS named color darkcyan, but darkcyan (#008B8B) is the closest CSS named color.

#18959E Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #18959E

Not just a swatch — here's how #18959E works with other colors. Named schemes with #18959E in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #18959E 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.

Tech Product Signal · 5 colors

Signal #18959E Surface #14161A Highlight #F4F6F8 Secondary #596771 Accent #5BB9C1

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 #18959E Secondary #715017 Surface #E3DCC0 Accent #395143 Anchor #552340

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 #18959E Surface #EFE8D6 Anchor #58224A Accent #E3C2CE 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 #18959E Secondary #96B6B8 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.

Build a working theme in the generator →

Color Lab

How #18959E 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 51/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 39/100

Low

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

Naturalness 9/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 53/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 46/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 27/100

Low

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

UI accent fit 83/100

Very 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 74/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #18959E

For UI

For branding

For interior

For fashion

People also use #18959E with

Emerald Green Cobalt Blue Cherry Red 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 5.2:1. Use

Subtle surface Use #CDEDF0 for cards and hover fills. Tint 80

Avoid beside #1869A0 — 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 #18959E 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: #18959E;
  --color-base-rgb: 24 149 158;
  --color-base-oklch: oklch(61.2% 0.100 202.7);
  --color-50: #F1FDFE;
  --color-100: #DBF8FB;
  --color-200: #B8F0F4;
  --color-300: #88E1E7;
  --color-400: #5CCED6;
  --color-500: #39B3BC;
  --color-600: #33898F;
  --color-700: #2A6165;
  --color-800: #1F4042;
  --color-900: #152729;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  bondi-blue: {
    50: '#F1FDFE',
    100: '#DBF8FB',
    200: '#B8F0F4',
    300: '#88E1E7',
    400: '#5CCED6',
    500: '#39B3BC',
    600: '#33898F',
    700: '#2A6165',
    800: '#1F4042',
    900: '#152729',
  },
}

$base: #18959E;
$base-ink: #141310;
$base-50: #F1FDFE;
$base-100: #DBF8FB;
$base-200: #B8F0F4;
$base-300: #88E1E7;
$base-400: #5CCED6;
$base-500: #39B3BC;
$base-600: #33898F;
$base-700: #2A6165;
$base-800: #1F4042;
$base-900: #152729;
$base-hover: #137980;
$base-subtle: #B3E6EA;

{
    "color": {
        "base": {
            "value": "#18959E",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1FDFE",
                "type": "color"
            },
            "100": {
                "value": "#DBF8FB",
                "type": "color"
            },
            "200": {
                "value": "#B8F0F4",
                "type": "color"
            },
            "300": {
                "value": "#88E1E7",
                "type": "color"
            },
            "400": {
                "value": "#5CCED6",
                "type": "color"
            },
            "500": {
                "value": "#39B3BC",
                "type": "color"
            },
            "600": {
                "value": "#33898F",
                "type": "color"
            },
            "700": {
                "value": "#2A6165",
                "type": "color"
            },
            "800": {
                "value": "#1F4042",
                "type": "color"
            },
            "900": {
                "value": "#152729",
                "type": "color"
            }
        }
    }
}

Palettes built on #18959E

Color Lab

Pairs with #18959E

UI roles & guardrails

In real applications

Scales

Every model

Export