What color is #63B166?

#63B166 is a medium, muted green. In RGB it is rgb(99, 177, 102), and in HSL hsl(122, 33%, 54%).

Is #63B166 accessible as text?

On white, #63B166 has a contrast ratio of 2.62:1 (fails WCAG AA for body text); on black it is 8.01:1 (passes). For text placed on #63B166, use black for the best readability.

What is the closest Tailwind color to #63B166?

The nearest Tailwind CSS token is emerald-500 (#00BC7D).

What colors go well with #63B166?

#63B166 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #B063AE. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #63B166 below.

Is #63B166 good for buttons?

#63B166 works well for buttons and highlights, but use black text on #63B166 — white text only reaches 2.62:1, below the 4.5:1 needed for normal-size labels.

Is #63B166 the same as CSS mediumseagreen?

No — #63B166 is not the CSS named color mediumseagreen, but mediumseagreen (#3CB371) is the closest CSS named color.

#63B166 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #63B166

Not just a swatch — here's how #63B166 works with other colors. Named schemes with #63B166 in its natural role, and a note on why the supporting colors balance it.

Botanical Studio Lead · 5 colors

Lead #63B166 Secondary #4C6B3B Accent #AD6B00 Surface #EEEAD6 Anchor #3C2F20

Medium 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 #63B166 Accent #A8C4BA Surface #E2D9BE Secondary #9AA09F Anchor #1A3648

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

Japanese Sand Base · 5 colors

Base #63B166 Surface #EEE9DC Highlight #F5F1E7 Secondary #B6B09F Ink #2B2723

Medium Sea 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.

Warm Autumn Interior Dominant · 5 colors

Dominant #63B166 Secondary #AD6B00 Accent #687C4C Surface #F2EDDD Anchor #3A2B1E

This palette keeps Medium Sea 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 #63B166 Secondary #B6D0B6 Support #989286 Ink #17140F

Medium 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 Medium Sea Green carrying the quiet middle.

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Color Lab

How #63B166 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 47/100

Neutral

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

Softness 52/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 31/100

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 47/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 38/100

Low

Understated — leans refined without going austere.

Brand distinctiveness 51/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 64/100

High

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

Surface fit 30/100

Low

Usable as a tinted surface in measured doses.

Print safety 71/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #63B166

For UI

For branding

For interior

For fashion

People also use #63B166 with

Dark Sea Green Verdigris Amethyst 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 7.1:1. Use

Subtle surface Use #E2EDE2 for cards and hover fills. Tint 80

Avoid beside #63B07F — 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 #63B166 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: #63B166;
  --color-base-rgb: 99 177 102;
  --color-base-oklch: oklch(69.1% 0.132 144.8);
  --color-50: #F5FAF5;
  --color-100: #E3F2E4;
  --color-200: #C9E4CA;
  --color-300: #A2CDA4;
  --color-400: #7EB480;
  --color-500: #5D975F;
  --color-600: #4C754E;
  --color-700: #3A553B;
  --color-800: #293829;
  --color-900: #1A231A;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  medium-sea-green: {
    50: '#F5FAF5',
    100: '#E3F2E4',
    200: '#C9E4CA',
    300: '#A2CDA4',
    400: '#7EB480',
    500: '#5D975F',
    600: '#4C754E',
    700: '#3A553B',
    800: '#293829',
    900: '#1A231A',
  },
}

$base: #63B166;
$base-ink: #141310;
$base-50: #F5FAF5;
$base-100: #E3F2E4;
$base-200: #C9E4CA;
$base-300: #A2CDA4;
$base-400: #7EB480;
$base-500: #5D975F;
$base-600: #4C754E;
$base-700: #3A553B;
$base-800: #293829;
$base-900: #1A231A;
$base-hover: #4A934C;
$base-subtle: #D3E5D4;

{
    "color": {
        "base": {
            "value": "#63B166",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F5FAF5",
                "type": "color"
            },
            "100": {
                "value": "#E3F2E4",
                "type": "color"
            },
            "200": {
                "value": "#C9E4CA",
                "type": "color"
            },
            "300": {
                "value": "#A2CDA4",
                "type": "color"
            },
            "400": {
                "value": "#7EB480",
                "type": "color"
            },
            "500": {
                "value": "#5D975F",
                "type": "color"
            },
            "600": {
                "value": "#4C754E",
                "type": "color"
            },
            "700": {
                "value": "#3A553B",
                "type": "color"
            },
            "800": {
                "value": "#293829",
                "type": "color"
            },
            "900": {
                "value": "#1A231A",
                "type": "color"
            }
        }
    }
}

Palettes built on #63B166

Color Lab

Pairs with #63B166

UI roles & guardrails

In real applications

Scales

Every model

Export