What color is #03E50B?

#03E50B is a medium, vivid green. In RGB it is rgb(3, 229, 11), and in HSL hsl(122, 97%, 45%).

Is #03E50B accessible as text?

On white, #03E50B has a contrast ratio of 1.72:1 (fails WCAG AA for body text); on black it is 12.22:1 (passes). For text placed on #03E50B, use black for the best readability.

What is the closest Tailwind color to #03E50B?

The nearest Tailwind CSS token is green-400 (#05DF72).

What colors go well with #03E50B?

#03E50B pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #E203DB. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #03E50B below.

Is #03E50B good for buttons?

#03E50B works well for buttons and highlights, but use black text on #03E50B — white text only reaches 1.72:1, below the 4.5:1 needed for normal-size labels.

Is #03E50B the same as CSS limegreen?

No — #03E50B is not the CSS named color limegreen, but limegreen (#32CD32) is the closest CSS named color.

#03E50B Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #03E50B

Not just a swatch — here's how #03E50B works with other colors. Named schemes with #03E50B in its natural role, and a note on why the supporting colors balance it.

Tech Product Signal · 5 colors

Signal #03E50B Surface #13161A Highlight #F4F6F8 Secondary #576770 Accent #6FFF68

Malachite is the vivid signal in this product UI — on a near-black surface with cool white, a slate grey and a lighter tint of Malachite.

Japanese Sand Base · 5 colors

Base #03E50B Surface #EEE9DC Highlight #F5F1E7 Secondary #B7B09F Ink #2B2723

Malachite 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.

Botanical Studio Lead · 5 colors

Lead #03E50B Secondary #4D6B3B Accent #AD6B00 Surface #EEEAD6 Anchor #3C2F21

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

Minimal Editorial Surface · 5 colors

Surface #F7F4EF Accent #03E50B Secondary #C7FCC2 Support #989286 Ink #17140F

Malachite 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 Malachite carrying the quiet middle.

Coastal Morning Lead · 5 colors

Lead #03E50B Accent #A8C4BA Surface #E2D9BE Secondary #9AA09F Anchor #193648

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

Build a working theme in the generator →

Color Lab

How #03E50B 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 48/100

Neutral

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

Softness 37/100

Low

Middle-weight — neither delicate nor heavy.

Depth 23/100

Low

Airy and open — recedes, leaves the composition light.

Naturalness 3/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 1/100

Very low

Clean and current — no dusty, aged cast.

Luxury 22/100

Low

Playful and accessible rather than exclusive.

Brand distinctiveness 100/100

Very high

Bold and ownable — memorable as a primary brand color.

UI accent fit 14/100

Very low

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

Surface fit 36/100

Low

Usable as a tinted surface in measured doses.

Print safety 40/100

Moderate

Shifts noticeably in CMYK — expect it to dull on press.

Pairs with #03E50B

For UI

For branding

For interior

For fashion

People also use #03E50B with

Lawn Green Shamrock Byzantine Platinum Hunter Green

UI roles & guardrails

Primary action Safe as a filled button with near-black label. AAA

Body text Do not use for body copy on light surfaces. Avoid

Large display Only on dark surfaces. Avoid

Background Pair with #141310 text at 10.8:1. Use

Subtle surface Use #CFF7D1 for cards and hover fills. Tint 80

Avoid beside #03E255 — 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 #03E50B 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: #03E50B;
  --color-base-rgb: 3 229 11;
  --color-base-oklch: oklch(79.9% 0.270 142.6);
  --color-50: #F0FEF1;
  --color-100: #D8FDD9;
  --color-200: #B1FCB3;
  --color-300: #79F67D;
  --color-400: #49E94E;
  --color-500: #25D02B;
  --color-600: #259D29;
  --color-700: #206F23;
  --color-800: #19481B;
  --color-900: #112C12;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  malachite: {
    50: '#F0FEF1',
    100: '#D8FDD9',
    200: '#B1FCB3',
    300: '#79F67D',
    400: '#49E94E',
    500: '#25D02B',
    600: '#259D29',
    700: '#206F23',
    800: '#19481B',
    900: '#112C12',
  },
}

$base: #03E50B;
$base-ink: #141310;
$base-50: #F0FEF1;
$base-100: #D8FDD9;
$base-200: #B1FCB3;
$base-300: #79F67D;
$base-400: #49E94E;
$base-500: #25D02B;
$base-600: #259D29;
$base-700: #206F23;
$base-800: #19481B;
$base-900: #112C12;
$base-hover: #03B509;
$base-subtle: #B6F4B8;

{
    "color": {
        "base": {
            "value": "#03E50B",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0FEF1",
                "type": "color"
            },
            "100": {
                "value": "#D8FDD9",
                "type": "color"
            },
            "200": {
                "value": "#B1FCB3",
                "type": "color"
            },
            "300": {
                "value": "#79F67D",
                "type": "color"
            },
            "400": {
                "value": "#49E94E",
                "type": "color"
            },
            "500": {
                "value": "#25D02B",
                "type": "color"
            },
            "600": {
                "value": "#259D29",
                "type": "color"
            },
            "700": {
                "value": "#206F23",
                "type": "color"
            },
            "800": {
                "value": "#19481B",
                "type": "color"
            },
            "900": {
                "value": "#112C12",
                "type": "color"
            }
        }
    }
}

Palettes built on #03E50B

Color Lab

Pairs with #03E50B

UI roles & guardrails

In real applications

Scales

Every model

Export