What color is #0A3333?

#0A3333 is a very dark cyan. In RGB it is rgb(10, 51, 51), and in HSL hsl(180, 67%, 12%).

Is #0A3333 accessible as text?

On white, #0A3333 has a contrast ratio of 13.69:1 (passes WCAG AA for body text); on black it is 1.53:1 (fails). For text placed on #0A3333, use white for the best readability.

What is the closest Tailwind color to #0A3333?

The nearest Tailwind CSS token is teal-950 (#022F2E).

What colors go well with #0A3333?

#0A3333 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #330A0A. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #0A3333 below.

Is #0A3333 good for buttons?

#0A3333 works well for buttons and highlights, but use white text on #0A3333 — black text only reaches 1.53:1, below the 4.5:1 needed for normal-size labels.

Is #0A3333 the same as CSS darkslategray?

No — #0A3333 is not the CSS named color darkslategray, but darkslategray (#2F4F4F) is the closest CSS named color.

#0A3333 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #0A3333

Not just a swatch — here's how #0A3333 works with other colors. Named schemes with #0A3333 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #0A3333 Accent #A6C4BD Surface #E0DABE Secondary #9AA0A0 Anchor #1D3549

Bottle 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 #0A3333 Secondary #AEB4B8 Surface #F1F2F0 Support #7A94A4 Anchor #2E3236

Bottle 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 #0A3333 Secondary #725018 Surface #E4DCC0 Accent #3A5142 Anchor #552340

Bottle 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.

Luxury Packaging Feature · 5 colors

Feature #0A3333 Anchor #141210 Accent #B8AA4D Secondary #1D2C2C Surface #F1EDE3

Bottle Green carries the depth in this luxury scheme, offset by a brass accent and near-black and held together by a deep neutral and an off-white surface.

Minimal Editorial Surface · 5 colors

Surface #F6F4EF Accent #0A3333 Secondary #475453 Support #979286 Ink #16140F

Bottle 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 Bottle Green carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #0A3333 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 39/100

Neutral

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

Softness 30/100

Low

Firm and assertive — carries weight and contrast.

Depth 67/100

High

Deep and grounding — anchors a layout, strong dark-mode base.

Naturalness 8/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 30/100

Low

A faint retro warmth without tipping into sepia.

Luxury 69/100

High

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

Brand distinctiveness 17/100

Very low

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

UI accent fit 26/100

Low

Weak as an action color — too pale, too dark or too muted to signal.

Surface fit 53/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 89/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #0A3333

For UI

For branding

For interior

For fashion

People also use #0A3333 with

Castleton Green Graphite Oxblood 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 13.7:1. Use

Subtle surface Use #BCE8E8 for cards and hover fills. Tint 80

Avoid beside #0A2533 — 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 #0A3333 at work across the surfaces designers actually ship.

Website / UI

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Build faster.

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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: #0A3333;
  --color-base-rgb: 10 51 51;
  --color-base-oklch: oklch(29.4% 0.044 195.0);
  --color-50: #F2FDFD;
  --color-100: #DCF9F9;
  --color-200: #BBF1F1;
  --color-300: #8CE3E3;
  --color-400: #62D0D0;
  --color-500: #3FB5B5;
  --color-600: #378B8B;
  --color-700: #2C6262;
  --color-800: #204141;
  --color-900: #162828;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  bottle-green: {
    50: '#F2FDFD',
    100: '#DCF9F9',
    200: '#BBF1F1',
    300: '#8CE3E3',
    400: '#62D0D0',
    500: '#3FB5B5',
    600: '#378B8B',
    700: '#2C6262',
    800: '#204141',
    900: '#162828',
  },
}

$base: #0A3333;
$base-ink: #FFFFFF;
$base-50: #F2FDFD;
$base-100: #DCF9F9;
$base-200: #BBF1F1;
$base-300: #8CE3E3;
$base-400: #62D0D0;
$base-500: #3FB5B5;
$base-600: #378B8B;
$base-700: #2C6262;
$base-800: #204141;
$base-900: #162828;
$base-hover: #082929;
$base-subtle: #99DEDE;

{
    "color": {
        "base": {
            "value": "#0A3333",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F2FDFD",
                "type": "color"
            },
            "100": {
                "value": "#DCF9F9",
                "type": "color"
            },
            "200": {
                "value": "#BBF1F1",
                "type": "color"
            },
            "300": {
                "value": "#8CE3E3",
                "type": "color"
            },
            "400": {
                "value": "#62D0D0",
                "type": "color"
            },
            "500": {
                "value": "#3FB5B5",
                "type": "color"
            },
            "600": {
                "value": "#378B8B",
                "type": "color"
            },
            "700": {
                "value": "#2C6262",
                "type": "color"
            },
            "800": {
                "value": "#204141",
                "type": "color"
            },
            "900": {
                "value": "#162828",
                "type": "color"
            }
        }
    }
}