What color is #055F4E?

#055F4E is a dark, vivid teal. In RGB it is rgb(5, 95, 78), and in HSL hsl(169, 90%, 20%).

Is #055F4E accessible as text?

On white, #055F4E has a contrast ratio of 7.63:1 (passes WCAG AA for body text); on black it is 2.75:1 (fails). For text placed on #055F4E, use white for the best readability.

What is the closest Tailwind color to #055F4E?

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

What colors go well with #055F4E?

#055F4E pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #610516. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #055F4E below.

Is #055F4E good for buttons?

#055F4E works well for buttons and highlights, but use white text on #055F4E — black text only reaches 2.75:1, below the 4.5:1 needed for normal-size labels.

Is #055F4E the same as CSS darkslategray?

No — #055F4E 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.

#055F4E Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #055F4E

Not just a swatch — here's how #055F4E works with other colors. Named schemes with #055F4E in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #055F4E Accent #A7C4BC Surface #E0D9BE Secondary #9AA0A0 Anchor #1B3549

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 #055F4E Secondary #ADB4B7 Surface #F1F2F0 Support #7994A4 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 #055F4E Secondary #734F19 Surface #E4DCC0 Accent #3B5141 Anchor #5B231F

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.

Modern Café Dominant · 5 colors

Dominant #055F4E Anchor #382B1E Surface #ECE4D0 Accent #839C70 Secondary #3A3833

Castleton Green 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.

Minimal Editorial Surface · 5 colors

Surface #F7F4EF Accent #055F4E Secondary #687E77 Support #989286 Ink #16140F

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.

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Color Lab

How #055F4E 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 36/100

Cool

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

Softness 39/100

Low

Middle-weight — neither delicate nor heavy.

Depth 56/100

Moderate

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

Naturalness 43/100

Moderate

Loosely natural — an earthy edge without being rustic.

Vintage feel 54/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 61/100

High

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

Brand distinctiveness 22/100

Low

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

UI accent fit 74/100

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 83/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #055F4E

For UI

For branding

For interior

For fashion

People also use #055F4E with

Forest Green Yale Blue Rosewood Platinum Dark Slate Gray

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 7.6:1. Use

Subtle surface Use #BCF1E7 for cards and hover fills. Tint 80

Avoid beside #055361 — 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 #055F4E at work across the surfaces designers actually ship.

Website / UI

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Build faster.

A working theme, generated in seconds.

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: #055F4E;
  --color-base-rgb: 5 95 78;
  --color-base-oklch: oklch(43.4% 0.081 174.6);
  --color-50: #F0FEFC;
  --color-100: #D8FDF6;
  --color-200: #B2FBED;
  --color-300: #7EF2DC;
  --color-400: #4FE3C8;
  --color-500: #2BCAAD;
  --color-600: #299984;
  --color-700: #236C5E;
  --color-800: #1B463E;
  --color-900: #122B26;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  castleton-green: {
    50: '#F0FEFC',
    100: '#D8FDF6',
    200: '#B2FBED',
    300: '#7EF2DC',
    400: '#4FE3C8',
    500: '#2BCAAD',
    600: '#299984',
    700: '#236C5E',
    800: '#1B463E',
    900: '#122B26',
  },
}

$base: #055F4E;
$base-ink: #FFFFFF;
$base-50: #F0FEFC;
$base-100: #D8FDF6;
$base-200: #B2FBED;
$base-300: #7EF2DC;
$base-400: #4FE3C8;
$base-500: #2BCAAD;
$base-600: #299984;
$base-700: #236C5E;
$base-800: #1B463E;
$base-900: #122B26;
$base-hover: #044E40;
$base-subtle: #98ECDC;

{
    "color": {
        "base": {
            "value": "#055F4E",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0FEFC",
                "type": "color"
            },
            "100": {
                "value": "#D8FDF6",
                "type": "color"
            },
            "200": {
                "value": "#B2FBED",
                "type": "color"
            },
            "300": {
                "value": "#7EF2DC",
                "type": "color"
            },
            "400": {
                "value": "#4FE3C8",
                "type": "color"
            },
            "500": {
                "value": "#2BCAAD",
                "type": "color"
            },
            "600": {
                "value": "#299984",
                "type": "color"
            },
            "700": {
                "value": "#236C5E",
                "type": "color"
            },
            "800": {
                "value": "#1B463E",
                "type": "color"
            },
            "900": {
                "value": "#122B26",
                "type": "color"
            }
        }
    }
}

Palettes built on #055F4E

Color Lab

Pairs with #055F4E

UI roles & guardrails

In real applications

Scales

Every model

Export