What color is #51EC75?

#51EC75 is a light, vivid green. In RGB it is rgb(81, 236, 117), and in HSL hsl(134, 80%, 62%).

Is #51EC75 accessible as text?

On white, #51EC75 has a contrast ratio of 1.54:1 (fails WCAG AA for body text); on black it is 13.60:1 (passes). For text placed on #51EC75, use black for the best readability.

What is the closest Tailwind color to #51EC75?

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

What colors go well with #51EC75?

#51EC75 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #EC51C7. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #51EC75 below.

Is #51EC75 good for buttons?

#51EC75 works well for buttons and highlights, but use black text on #51EC75 — white text only reaches 1.54:1, below the 4.5:1 needed for normal-size labels.

Is #51EC75 the same as CSS mediumspringgreen?

No — #51EC75 is not the CSS named color mediumspringgreen, but mediumspringgreen (#00FA9A) is the closest CSS named color.

#51EC75 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #51EC75

Not just a swatch — here's how #51EC75 works with other colors. Named schemes with #51EC75 in its natural role, and a note on why the supporting colors balance it.

Nordic Calm Accent · 5 colors

Accent #51EC75 Secondary #ADB4B7 Surface #F1F2F0 Support #7895A3 Anchor #2D3236

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

Tech Product Signal · 5 colors

Signal #51EC75 Surface #13161A Highlight #F4F6F8 Secondary #576770 Accent #8FFFA6

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

Botanical Studio Lead · 5 colors

Lead #51EC75 Secondary #4C6B3C Accent #AD6C00 Surface #EEEAD6 Anchor #3C2F20

Medium Spring Green 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 #51EC75 Secondary #D7FFDC Support #989286 Ink #17140F

Medium Spring 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 Medium Spring Green carrying the quiet middle.

Japanese Sand Base · 5 colors

Base #51EC75 Surface #EEE9DC Highlight #F5F1E7 Secondary #B6B09F Ink #2B2723

Medium Spring 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.

Build a working theme in the generator →

Color Lab

How #51EC75 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 43/100

Neutral

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

Softness 49/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 18/100

Very low

Airy and open — recedes, leaves the composition light.

Naturalness 29/100

Low

Loosely natural — an earthy edge without being rustic.

Vintage feel 16/100

Very low

Clean and current — no dusty, aged cast.

Luxury 21/100

Low

Playful and accessible rather than exclusive.

Brand distinctiveness 80/100

High

Bold and ownable — memorable as a primary brand color.

UI accent fit 17/100

Very low

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

Surface fit 39/100

Low

Usable as a tinted surface in measured doses.

Print safety 55/100

Moderate

Prints close, with a slight loss of vibrancy.

Pairs with #51EC75

For UI

For branding

For interior

For fashion

People also use #51EC75 with

Light Green Turquoise Orchid 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 12.0:1. Use

Subtle surface Use #E0F7E6 for cards and hover fills. Tint 80

Avoid beside #51ECA8 — 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 #51EC75 at work across the surfaces designers actually ship.

Website / UI

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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: #51EC75;
  --color-base-rgb: 81 236 117;
  --color-base-oklch: oklch(83.6% 0.207 147.8);
  --color-50: #F1FEF4;
  --color-100: #D9FCE1;
  --color-200: #B6F7C5;
  --color-300: #84EB9C;
  --color-400: #57DB76;
  --color-500: #34C155;
  --color-600: #2F9346;
  --color-700: #276836;
  --color-800: #1D4426;
  --color-900: #142919;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  medium-spring-green: {
    50: '#F1FEF4',
    100: '#D9FCE1',
    200: '#B6F7C5',
    300: '#84EB9C',
    400: '#57DB76',
    500: '#34C155',
    600: '#2F9346',
    700: '#276836',
    800: '#1D4426',
    900: '#142919',
  },
}

$base: #51EC75;
$base-ink: #141310;
$base-50: #F1FEF4;
$base-100: #D9FCE1;
$base-200: #B6F7C5;
$base-300: #84EB9C;
$base-400: #57DB76;
$base-500: #34C155;
$base-600: #2F9346;
$base-700: #276836;
$base-800: #1D4426;
$base-900: #142919;
$base-hover: #19E449;
$base-subtle: #D0F4D9;

{
    "color": {
        "base": {
            "value": "#51EC75",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1FEF4",
                "type": "color"
            },
            "100": {
                "value": "#D9FCE1",
                "type": "color"
            },
            "200": {
                "value": "#B6F7C5",
                "type": "color"
            },
            "300": {
                "value": "#84EB9C",
                "type": "color"
            },
            "400": {
                "value": "#57DB76",
                "type": "color"
            },
            "500": {
                "value": "#34C155",
                "type": "color"
            },
            "600": {
                "value": "#2F9346",
                "type": "color"
            },
            "700": {
                "value": "#276836",
                "type": "color"
            },
            "800": {
                "value": "#1D4426",
                "type": "color"
            },
            "900": {
                "value": "#142919",
                "type": "color"
            }
        }
    }
}

Palettes built on #51EC75

Color Lab

Pairs with #51EC75

UI roles & guardrails

In real applications

Scales

Every model

Export