What color is #51EC68?

#51EC68 is a light, vivid green. In RGB it is rgb(81, 236, 104), and in HSL hsl(129, 80%, 62%).

Is #51EC68 accessible as text?

On white, #51EC68 has a contrast ratio of 1.55:1 (fails WCAG AA for body text); on black it is 13.55:1 (passes). For text placed on #51EC68, use black for the best readability.

What is the closest Tailwind color to #51EC68?

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

What colors go well with #51EC68?

#51EC68 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #EC51D4. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #51EC68 below.

Is #51EC68 good for buttons?

#51EC68 works well for buttons and highlights, but use black text on #51EC68 — white text only reaches 1.55:1, below the 4.5:1 needed for normal-size labels.

Is #51EC68 the same as CSS springgreen?

No — #51EC68 is not the CSS named color springgreen, but springgreen (#00FF7F) is the closest CSS named color.

#51EC68 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #51EC68

Not just a swatch — here's how #51EC68 works with other colors. Named schemes with #51EC68 in its natural role, and a note on why the supporting colors balance it.

Tech Product Signal · 5 colors

Signal #51EC68 Surface #13161A Highlight #F4F6F8 Secondary #576770 Accent #8FFF9B

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 Spring Green.

Japanese Sand Base · 5 colors

Base #51EC68 Surface #EEE9DC Highlight #F5F1E7 Secondary #B6B09F Ink #2B2723

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.

Botanical Studio Lead · 5 colors

Lead #51EC68 Secondary #4C6B3C Accent #AD6C00 Surface #EEEAD6 Anchor #3C2F20

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 #51EC68 Secondary #D6FFD8 Support #989286 Ink #17140F

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 Spring Green carrying the quiet middle.

Coastal Morning Lead · 5 colors

Lead #51EC68 Accent #A8C4BA Surface #E2D9BE Secondary #9AA09F Anchor #1A3648

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

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Color Lab

How #51EC68 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 45/100

Neutral

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

Softness 47/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 18/100

Very low

Airy and open — recedes, leaves the composition light.

Naturalness 22/100

Low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 14/100

Very low

Clean and current — no dusty, aged cast.

Luxury 21/100

Low

Playful and accessible rather than exclusive.

Brand distinctiveness 84/100

Very high

Bold and ownable — memorable as a primary brand color.

UI accent fit 16/100

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 52/100

Moderate

Prints close, with a slight loss of vibrancy.

Pairs with #51EC68

For UI

For branding

For interior

For fashion

People also use #51EC68 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 #E0F7E4 for cards and hover fills. Tint 80

Avoid beside #51EC9C — 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 #51EC68 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: #51EC68;
  --color-base-rgb: 81 236 104;
  --color-base-oklch: oklch(83.4% 0.218 145.8);
  --color-50: #F1FEF3;
  --color-100: #D9FCDF;
  --color-200: #B6F7BF;
  --color-300: #84EB93;
  --color-400: #57DB6B;
  --color-500: #34C149;
  --color-600: #2F933E;
  --color-700: #276831;
  --color-800: #1D4423;
  --color-900: #142917;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  spring-green: {
    50: '#F1FEF3',
    100: '#D9FCDF',
    200: '#B6F7BF',
    300: '#84EB93',
    400: '#57DB6B',
    500: '#34C149',
    600: '#2F933E',
    700: '#276831',
    800: '#1D4423',
    900: '#142917',
  },
}

$base: #51EC68;
$base-ink: #141310;
$base-50: #F1FEF3;
$base-100: #D9FCDF;
$base-200: #B6F7BF;
$base-300: #84EB93;
$base-400: #57DB6B;
$base-500: #34C149;
$base-600: #2F933E;
$base-700: #276831;
$base-800: #1D4423;
$base-900: #142917;
$base-hover: #19E438;
$base-subtle: #D0F4D6;

{
    "color": {
        "base": {
            "value": "#51EC68",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1FEF3",
                "type": "color"
            },
            "100": {
                "value": "#D9FCDF",
                "type": "color"
            },
            "200": {
                "value": "#B6F7BF",
                "type": "color"
            },
            "300": {
                "value": "#84EB93",
                "type": "color"
            },
            "400": {
                "value": "#57DB6B",
                "type": "color"
            },
            "500": {
                "value": "#34C149",
                "type": "color"
            },
            "600": {
                "value": "#2F933E",
                "type": "color"
            },
            "700": {
                "value": "#276831",
                "type": "color"
            },
            "800": {
                "value": "#1D4423",
                "type": "color"
            },
            "900": {
                "value": "#142917",
                "type": "color"
            }
        }
    }
}

Palettes built on #51EC68

Color Lab

Pairs with #51EC68

UI roles & guardrails

In real applications

Scales

Every model

Export