What color is #288663?

#288663 is a dark teal-green. In RGB it is rgb(40, 134, 99), and in HSL hsl(158, 54%, 34%).

Is #288663 accessible as text?

On white, #288663 has a contrast ratio of 4.49:1 (fails WCAG AA for body text); on black it is 4.68:1 (passes). For text placed on #288663, use black for the best readability.

What is the closest Tailwind color to #288663?

The nearest Tailwind CSS token is emerald-700 (#007A55).

What colors go well with #288663?

#288663 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #86284A. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #288663 below.

Is #288663 good for buttons?

#288663 works well for buttons and highlights, but use black text on #288663 — white text only reaches 4.49:1, below the 4.5:1 needed for normal-size labels.

Is #288663 the same as CSS seagreen?

No — #288663 is not the CSS named color seagreen, but seagreen (#2E8B57) is the closest CSS named color.

#288663 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #288663

Not just a swatch — here's how #288663 works with other colors. Named schemes with #288663 in its natural role, and a note on why the supporting colors balance it.

Botanical Studio Lead · 5 colors

Lead #288663 Secondary #496C3E Accent #AB6D00 Surface #EEEAD6 Anchor #3C2F20

Sea 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 #288663 Accent #A7C4BB Surface #E1D9BE Secondary #9AA0A0 Anchor #1B3548

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

Vintage Leather Lead · 5 colors

Lead #288663 Secondary #744F1A Surface #E5DBC0 Accent #3B5141 Anchor #5B2320

Sea 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.

Berry & Cream Lead · 5 colors

Lead #288663 Surface #F0E8D6 Anchor #612027 Accent #E5C4B9 Secondary #342B2C

Sea Green sits between cream and a deep berry here, softened by a blush accent and grounded by charcoal.

Minimal Editorial Surface · 5 colors

Surface #F7F4EF Accent #288663 Secondary #89A597 Support #989286 Ink #17140F

Sea 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 Sea Green carrying the quiet middle.

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Color Lab

How #288663 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 37/100

Cool

Reads cool and recessive — calming, technical, good for trust-led UI.

Softness 47/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 44/100

Moderate

Mid depth — usable as an accent or a muted ground.

Naturalness 73/100

High

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

Vintage feel 66/100

High

Faded, nostalgic quality — editorial, heritage and retro work.

Luxury 52/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 28/100

Low

Quiet and neutral — a supporting tone, not a signature.

UI accent fit 93/100

Very high

Strong interactive accent — visible and can carry a legible label.

Surface fit 27/100

Low

Too saturated or mid-toned for big areas — keep it to accents.

Print safety 80/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #288663

For UI

For branding

For interior

For fashion

People also use #288663 with

Jade Green Teal Blue Wine Red Platinum Dark Slate Gray

UI roles & guardrails

Primary action Too mid-tone for a filled button — darken for the fill. AA Large

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

Large display Fine for headings 24px+ on white. Pass

Background Pair with white text at 4.5:1. Use

Subtle surface Use #D0EAE1 for cards and hover fills. Tint 80

Avoid beside #288682 — 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 #288663 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: #288663;
  --color-base-rgb: 40 134 99;
  --color-base-oklch: oklch(55.6% 0.103 164.1);
  --color-50: #F3FCF9;
  --color-100: #DFF6EE;
  --color-200: #C0ECDC;
  --color-300: #95DAC1;
  --color-400: #6CC6A5;
  --color-500: #4BAA87;
  --color-600: #3F836A;
  --color-700: #325D4D;
  --color-800: #233D34;
  --color-900: #172621;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  sea-green: {
    50: '#F3FCF9',
    100: '#DFF6EE',
    200: '#C0ECDC',
    300: '#95DAC1',
    400: '#6CC6A5',
    500: '#4BAA87',
    600: '#3F836A',
    700: '#325D4D',
    800: '#233D34',
    900: '#172621',
  },
}

$base: #288663;
$base-ink: #141310;
$base-50: #F3FCF9;
$base-100: #DFF6EE;
$base-200: #C0ECDC;
$base-300: #95DAC1;
$base-400: #6CC6A5;
$base-500: #4BAA87;
$base-600: #3F836A;
$base-700: #325D4D;
$base-800: #233D34;
$base-900: #172621;
$base-hover: #206B4F;
$base-subtle: #B8E1D2;

{
    "color": {
        "base": {
            "value": "#288663",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3FCF9",
                "type": "color"
            },
            "100": {
                "value": "#DFF6EE",
                "type": "color"
            },
            "200": {
                "value": "#C0ECDC",
                "type": "color"
            },
            "300": {
                "value": "#95DAC1",
                "type": "color"
            },
            "400": {
                "value": "#6CC6A5",
                "type": "color"
            },
            "500": {
                "value": "#4BAA87",
                "type": "color"
            },
            "600": {
                "value": "#3F836A",
                "type": "color"
            },
            "700": {
                "value": "#325D4D",
                "type": "color"
            },
            "800": {
                "value": "#233D34",
                "type": "color"
            },
            "900": {
                "value": "#172621",
                "type": "color"
            }
        }
    }
}

Palettes built on #288663

Color Lab

Pairs with #288663

UI roles & guardrails

In real applications

Scales

Every model

Export