What color is #178666?

#178666 is a dark, vivid teal-green. In RGB it is rgb(23, 134, 102), and in HSL hsl(163, 71%, 31%).

Is #178666 accessible as text?

On white, #178666 has a contrast ratio of 4.53:1 (passes WCAG AA for body text); on black it is 4.64:1 (passes). For text placed on #178666, use black for the best readability.

What is the closest Tailwind color to #178666?

The nearest Tailwind CSS token is emerald-700 (#007A55).

What colors go well with #178666?

#178666 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #871737. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #178666 below.

Is #178666 good for buttons?

#178666 works for buttons; black text has the higher contrast, so prefer it for labels.

Is #178666 the same as CSS seagreen?

No — #178666 is not the CSS named color seagreen, but seagreen (#2E8B57) is the closest CSS named color.

#178666 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #178666

Not just a swatch — here's how #178666 works with other colors. Named schemes with #178666 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #178666 Accent #A7C4BB Surface #E1D9BE Secondary #9AA0A0 Anchor #1B3549

Viridian opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.

Vintage Leather Lead · 5 colors

Lead #178666 Secondary #744F1A Surface #E5DBC0 Accent #3B5141 Anchor #5B231F

Viridian plays the worn-leather lead, deepened by saddle brown and an oxblood anchor, softened by aged cream and cooled by a muted forest green.

Modern Café Dominant · 5 colors

Dominant #178666 Anchor #382B1E Surface #ECE4D0 Accent #849C6F Secondary #3A3833

Viridian 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.

Berry & Cream Lead · 5 colors

Lead #178666 Surface #F0E8D6 Anchor #612027 Accent #E5C4B9 Secondary #342B2C

Viridian sits between cream and a deep berry here, softened by a blush accent and grounded by charcoal.

Minimal Editorial Surface · 5 colors

Surface #F7F4EF Accent #178666 Secondary #87A498 Support #989286 Ink #16140F

Viridian 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 Viridian carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #178666 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 35/100

Cool

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

Softness 46/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 45/100

Moderate

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

Naturalness 65/100

High

Organic, earthy character — at home in wellness, food and craft brands.

Vintage feel 64/100

High

Faded, nostalgic quality — editorial, heritage and retro work.

Luxury 52/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 29/100

Low

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

UI accent fit 95/100

Very high

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

Surface fit 25/100

Low

Too saturated or mid-toned for big areas — keep it to accents.

Print safety 80/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #178666

For UI

For branding

For interior

For fashion

People also use #178666 with

Kelly Green Lapis Lazuli Burgundy Platinum Dark Slate Gray

UI roles & guardrails

Primary action Safe as a filled button with white label. AA

Body text Passes on white at 16px and above. Pass

Large display Fine for headings 24px+ on white. Pass

Background Pair with white text at 4.5:1. Use

Subtle surface Use #CAEEE4 for cards and hover fills. Tint 80

Avoid beside #178287 — 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 #178666 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: #178666;
  --color-base-rgb: 23 134 102;
  --color-base-oklch: oklch(55.3% 0.107 167.6);
  --color-50: #F1FDFA;
  --color-100: #DBFAF1;
  --color-200: #B9F3E3;
  --color-300: #8AE5CB;
  --color-400: #5ED4B2;
  --color-500: #3CB995;
  --color-600: #358D74;
  --color-700: #2B6454;
  --color-800: #1F4238;
  --color-900: #152823;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  viridian: {
    50: '#F1FDFA',
    100: '#DBFAF1',
    200: '#B9F3E3',
    300: '#8AE5CB',
    400: '#5ED4B2',
    500: '#3CB995',
    600: '#358D74',
    700: '#2B6454',
    800: '#1F4238',
    900: '#152823',
  },
}

$base: #178666;
$base-ink: #141310;
$base-50: #F1FDFA;
$base-100: #DBFAF1;
$base-200: #B9F3E3;
$base-300: #8AE5CB;
$base-400: #5ED4B2;
$base-500: #3CB995;
$base-600: #358D74;
$base-700: #2B6454;
$base-800: #1F4238;
$base-900: #152823;
$base-hover: #126C53;
$base-subtle: #AEE7D7;

{
    "color": {
        "base": {
            "value": "#178666",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1FDFA",
                "type": "color"
            },
            "100": {
                "value": "#DBFAF1",
                "type": "color"
            },
            "200": {
                "value": "#B9F3E3",
                "type": "color"
            },
            "300": {
                "value": "#8AE5CB",
                "type": "color"
            },
            "400": {
                "value": "#5ED4B2",
                "type": "color"
            },
            "500": {
                "value": "#3CB995",
                "type": "color"
            },
            "600": {
                "value": "#358D74",
                "type": "color"
            },
            "700": {
                "value": "#2B6454",
                "type": "color"
            },
            "800": {
                "value": "#1F4238",
                "type": "color"
            },
            "900": {
                "value": "#152823",
                "type": "color"
            }
        }
    }
}

Palettes built on #178666

Color Lab

Pairs with #178666

UI roles & guardrails

In real applications

Scales

Every model

Export