What color is #175B3B?

#175B3B is a dark teal-green. In RGB it is rgb(23, 91, 59), and in HSL hsl(152, 60%, 22%).

Is #175B3B accessible as text?

On white, #175B3B has a contrast ratio of 8.09:1 (passes WCAG AA for body text); on black it is 2.60:1 (fails). For text placed on #175B3B, use white for the best readability.

What is the closest Tailwind color to #175B3B?

The nearest Tailwind CSS token is emerald-800 (#006045).

What colors go well with #175B3B?

#175B3B pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #5A1636. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #175B3B below.

Is #175B3B good for buttons?

#175B3B works well for buttons and highlights, but use white text on #175B3B — black text only reaches 2.60:1, below the 4.5:1 needed for normal-size labels.

Is #175B3B the same as CSS darkslategray?

No — #175B3B is not the CSS named color darkslategray, but darkslategray (#2F4F4F) is the closest CSS named color by perceptual color distance — it sits in a different color family, so treat it as a rough reference, not a match.

#175B3B Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #175B3B

Not just a swatch — here's how #175B3B works with other colors. Named schemes with #175B3B in its natural role, and a note on why the supporting colors balance it.

Botanical Studio Lead · 5 colors

Lead #175B3B Secondary #4A6C3D Accent #AC6D00 Surface #EEEAD6 Anchor #3C2F20

Castleton Green leads this botanical set among foliage greens and a terracotta accent, softened by cream and grounded in bark brown.

Coastal Morning Lead · 5 colors

Lead #175B3B Accent #A8C4BB Surface #E1D9BE Secondary #9AA0A0 Anchor #1A3648

Castleton Green 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 #175B3B Secondary #ADB4B7 Surface #F1F2F0 Support #7895A3 Anchor #2D3236

Castleton Green keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.

Vintage Leather Lead · 5 colors

Lead #175B3B Secondary #744E1A Surface #E5DBC0 Accent #3C5140 Anchor #5B2320

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

Minimal Editorial Surface · 5 colors

Surface #F7F4EF Accent #175B3B Secondary #667A6E Support #989286 Ink #17140F

Castleton Green 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 Castleton Green carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #175B3B 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 42/100

Neutral

Balanced temperature — flexible, sits between warm and cool schemes.

Softness 38/100

Low

Middle-weight — neither delicate nor heavy.

Depth 57/100

Moderate

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

Naturalness 80/100

High

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

Vintage feel 58/100

Moderate

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

Luxury 63/100

High

Restrained and premium — deep, quiet, high-end packaging and fashion.

Brand distinctiveness 23/100

Low

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

UI accent fit 72/100

High

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

Surface fit 32/100

Low

Usable as a tinted surface in measured doses.

Print safety 82/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #175B3B

For UI

For branding

For interior

For fashion

People also use #175B3B with

Green Dark Slate Gray Tyrian Purple Platinum

UI roles & guardrails

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

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 8.1:1. Use

Subtle surface Use #C6E8D8 for cards and hover fills. Tint 80

Avoid beside #165A51 — 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 #175B3B 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: #175B3B;
  --color-base-rgb: 23 91 59;
  --color-base-oklch: oklch(42.0% 0.086 158.4);
  --color-50: #F2FCF8;
  --color-100: #DEF8EB;
  --color-200: #BEEFD8;
  --color-300: #91DEBA;
  --color-400: #67CB9C;
  --color-500: #46AF7E;
  --color-600: #3C8663;
  --color-700: #2F6049;
  --color-800: #223F31;
  --color-900: #16271F;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  castleton-green: {
    50: '#F2FCF8',
    100: '#DEF8EB',
    200: '#BEEFD8',
    300: '#91DEBA',
    400: '#67CB9C',
    500: '#46AF7E',
    600: '#3C8663',
    700: '#2F6049',
    800: '#223F31',
    900: '#16271F',
  },
}

$base: #175B3B;
$base-ink: #FFFFFF;
$base-50: #F2FCF8;
$base-100: #DEF8EB;
$base-200: #BEEFD8;
$base-300: #91DEBA;
$base-400: #67CB9C;
$base-500: #46AF7E;
$base-600: #3C8663;
$base-700: #2F6049;
$base-800: #223F31;
$base-900: #16271F;
$base-hover: #12482F;
$base-subtle: #A8DFC5;

{
    "color": {
        "base": {
            "value": "#175B3B",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F2FCF8",
                "type": "color"
            },
            "100": {
                "value": "#DEF8EB",
                "type": "color"
            },
            "200": {
                "value": "#BEEFD8",
                "type": "color"
            },
            "300": {
                "value": "#91DEBA",
                "type": "color"
            },
            "400": {
                "value": "#67CB9C",
                "type": "color"
            },
            "500": {
                "value": "#46AF7E",
                "type": "color"
            },
            "600": {
                "value": "#3C8663",
                "type": "color"
            },
            "700": {
                "value": "#2F6049",
                "type": "color"
            },
            "800": {
                "value": "#223F31",
                "type": "color"
            },
            "900": {
                "value": "#16271F",
                "type": "color"
            }
        }
    }
}

Palettes built on #175B3B

Color Lab

Pairs with #175B3B

UI roles & guardrails

In real applications

Scales

Every model

Export