What color is #99EFAE?

#99EFAE is a light, vivid green. In RGB it is rgb(153, 239, 174), and in HSL hsl(135, 73%, 77%).

Is #99EFAE accessible as text?

On white, #99EFAE has a contrast ratio of 1.37:1 (fails WCAG AA for body text); on black it is 15.31:1 (passes). For text placed on #99EFAE, use black for the best readability.

What is the closest Tailwind color to #99EFAE?

The nearest Tailwind CSS token is green-300 (#7BF1A8).

What colors go well with #99EFAE?

#99EFAE pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #EF9ADA. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #99EFAE below.

Is #99EFAE good for buttons?

#99EFAE works well for buttons and highlights, but use black text on #99EFAE — white text only reaches 1.37:1, below the 4.5:1 needed for normal-size labels.

Is #99EFAE the same as CSS lightgreen?

No — #99EFAE is not the CSS named color lightgreen, but lightgreen (#90EE90) is the closest CSS named color.

#99EFAE Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #99EFAE

Not just a swatch — here's how #99EFAE works with other colors. Named schemes with #99EFAE in its natural role, and a note on why the supporting colors balance it.

Botanical Studio Lead · 5 colors

Lead #99EFAE Secondary #4B6C3C Accent #AD6C00 Surface #EEEAD6 Anchor #3C2F20

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

Coastal Morning Lead · 5 colors

Lead #99EFAE Accent #A8C4BA Surface #E1D9BE Secondary #9AA0A0 Anchor #1A3648

Seafoam 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 #99EFAE Secondary #ADB4B7 Surface #F1F2F0 Support #7895A3 Anchor #2D3236

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

Warm Autumn Interior Dominant · 5 colors

Dominant #99EFAE Secondary #AD6C00 Accent #677C4D Surface #F1EDDD Anchor #392B1E

This palette keeps Seafoam Green as the dominant warm neutral, balanced by muted terracotta and olive earth tones and grounded by a deep espresso anchor.

Minimal Editorial Surface · 5 colors

Surface #F7F4EF Accent #99EFAE Secondary #E6FFEC Support #989286 Ink #17140F

Seafoam 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 Seafoam Green carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #99EFAE 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 67/100

High

Soft and easy on the eye — gentle backdrops, calm surfaces.

Depth 12/100

Very low

Airy and open — recedes, leaves the composition light.

Naturalness 100/100

Very high

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

Vintage feel 31/100

Low

A faint retro warmth without tipping into sepia.

Luxury 18/100

Very low

Playful and accessible rather than exclusive.

Brand distinctiveness 47/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 12/100

Very low

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

Surface fit 51/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 73/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #99EFAE

For UI

For branding

For interior

For fashion

People also use #99EFAE with

Tea Green Seafoam Carnation 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 13.5:1. Use

Subtle surface Use #EDF9F0 for cards and hover fills. Tint 80

Avoid beside #9AEFCB — 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 #99EFAE 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: #99EFAE;
  --color-base-rgb: 153 239 174;
  --color-base-oklch: oklch(88.1% 0.123 151.0);
  --color-50: #F1FDF4;
  --color-100: #DBFAE3;
  --color-200: #B9F4C7;
  --color-300: #88E7A0;
  --color-400: #5DD57B;
  --color-500: #3ABB5A;
  --color-600: #338E4A;
  --color-700: #2A6539;
  --color-800: #1F4228;
  --color-900: #15281A;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  seafoam-green: {
    50: '#F1FDF4',
    100: '#DBFAE3',
    200: '#B9F4C7',
    300: '#88E7A0',
    400: '#5DD57B',
    500: '#3ABB5A',
    600: '#338E4A',
    700: '#2A6539',
    800: '#1F4228',
    900: '#15281A',
  },
}

$base: #99EFAE;
$base-ink: #141310;
$base-50: #F1FDF4;
$base-100: #DBFAE3;
$base-200: #B9F4C7;
$base-300: #88E7A0;
$base-400: #5DD57B;
$base-500: #3ABB5A;
$base-600: #338E4A;
$base-700: #2A6539;
$base-800: #1F4228;
$base-900: #15281A;
$base-hover: #56E579;
$base-subtle: #E4F7E9;

{
    "color": {
        "base": {
            "value": "#99EFAE",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1FDF4",
                "type": "color"
            },
            "100": {
                "value": "#DBFAE3",
                "type": "color"
            },
            "200": {
                "value": "#B9F4C7",
                "type": "color"
            },
            "300": {
                "value": "#88E7A0",
                "type": "color"
            },
            "400": {
                "value": "#5DD57B",
                "type": "color"
            },
            "500": {
                "value": "#3ABB5A",
                "type": "color"
            },
            "600": {
                "value": "#338E4A",
                "type": "color"
            },
            "700": {
                "value": "#2A6539",
                "type": "color"
            },
            "800": {
                "value": "#1F4228",
                "type": "color"
            },
            "900": {
                "value": "#15281A",
                "type": "color"
            }
        }
    }
}

Palettes built on #99EFAE

Color Lab

Pairs with #99EFAE

UI roles & guardrails

In real applications

Scales

Every model

Export