What color is #303B15?

#303B15 is a very dark lime green. In RGB it is rgb(48, 59, 21), and in HSL hsl(77, 48%, 16%).

Is #303B15 accessible as text?

On white, #303B15 has a contrast ratio of 11.92:1 (passes WCAG AA for body text); on black it is 1.76:1 (fails). For text placed on #303B15, use white for the best readability.

What is the closest Tailwind color to #303B15?

The nearest Tailwind CSS token is lime-950 (#192E03).

What colors go well with #303B15?

#303B15 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #20153C. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #303B15 below.

Is #303B15 good for buttons?

#303B15 works well for buttons and highlights, but use white text on #303B15 — black text only reaches 1.76:1, below the 4.5:1 needed for normal-size labels.

Is #303B15 the same as CSS darkslategray?

No — #303B15 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.

#303B15 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #303B15

Not just a swatch — here's how #303B15 works with other colors. Named schemes with #303B15 in its natural role, and a note on why the supporting colors balance it.

Botanical Studio Lead · 5 colors

Lead #303B15 Secondary #506B39 Accent #AF6A01 Surface #EFE9D6 Anchor #3D2F21

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

Vintage Leather Lead · 5 colors

Lead #303B15 Secondary #764D1D Surface #E6DBC0 Accent #3D513F Anchor #5B2324

British Racing 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.

Japanese Sand Base · 5 colors

Base #303B15 Surface #EEE9DC Highlight #F6F1E7 Secondary #B7B09F Ink #2B2723

British Racing Green sets a calm, sun-bleached base here, wrapped in bone and paper off-whites and a soft greige, with a single ink accent for wabi-sabi restraint.

Luxury Packaging Feature · 5 colors

Feature #303B15 Anchor #141210 Accent #C4A54B Secondary #272B20 Surface #F2EDE3

British Racing 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 #F7F4EF Accent #303B15 Secondary #595E51 Support #999286 Ink #17140F

British Racing 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 British Racing Green carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #303B15 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 55/100

Neutral

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

Softness 33/100

Low

Middle-weight — neither delicate nor heavy.

Depth 64/100

High

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

Naturalness 76/100

High

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

Vintage feel 49/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 68/100

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 39/100

Low

Workable accent with care around contrast.

Surface fit 45/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 87/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #303B15

For UI

For branding

For interior

For fashion

People also use #303B15 with

Army Green British Racing Green Russian Violet 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 11.9:1. Use

Subtle surface Use #DBE3C5 for cards and hover fills. Tint 80

Avoid beside #243C15 — 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 #303B15 at work across the surfaces designers actually ship.

Website / UI

Northwind Sign up

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: #303B15;
  --color-base-rgb: 48 59 21;
  --color-base-oklch: oklch(33.2% 0.061 123.2);
  --color-50: #F9FBF3;
  --color-100: #EFF5E0;
  --color-200: #DFEAC3;
  --color-300: #C5D799;
  --color-400: #AAC171;
  --color-500: #8DA550;
  --color-600: #6E7F43;
  --color-700: #505B34;
  --color-800: #353C25;
  --color-900: #212518;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  british-racing-green: {
    50: '#F9FBF3',
    100: '#EFF5E0',
    200: '#DFEAC3',
    300: '#C5D799',
    400: '#AAC171',
    500: '#8DA550',
    600: '#6E7F43',
    700: '#505B34',
    800: '#353C25',
    900: '#212518',
  },
}

$base: #303B15;
$base-ink: #FFFFFF;
$base-50: #F9FBF3;
$base-100: #EFF5E0;
$base-200: #DFEAC3;
$base-300: #C5D799;
$base-400: #AAC171;
$base-500: #8DA550;
$base-600: #6E7F43;
$base-700: #505B34;
$base-800: #353C25;
$base-900: #212518;
$base-hover: #273011;
$base-subtle: #C9D6A7;

{
    "color": {
        "base": {
            "value": "#303B15",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F9FBF3",
                "type": "color"
            },
            "100": {
                "value": "#EFF5E0",
                "type": "color"
            },
            "200": {
                "value": "#DFEAC3",
                "type": "color"
            },
            "300": {
                "value": "#C5D799",
                "type": "color"
            },
            "400": {
                "value": "#AAC171",
                "type": "color"
            },
            "500": {
                "value": "#8DA550",
                "type": "color"
            },
            "600": {
                "value": "#6E7F43",
                "type": "color"
            },
            "700": {
                "value": "#505B34",
                "type": "color"
            },
            "800": {
                "value": "#353C25",
                "type": "color"
            },
            "900": {
                "value": "#212518",
                "type": "color"
            }
        }
    }
}

Palettes built on #303B15

Color Lab

Pairs with #303B15

UI roles & guardrails

In real applications

Scales

Every model

Export