What color is #40B57A?

#40B57A is a medium teal-green. In RGB it is rgb(64, 181, 122), and in HSL hsl(150, 48%, 48%).

Is #40B57A accessible as text?

On white, #40B57A has a contrast ratio of 2.59:1 (fails WCAG AA for body text); on black it is 8.11:1 (passes). For text placed on #40B57A, use black for the best readability.

What is the closest Tailwind color to #40B57A?

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

What colors go well with #40B57A?

#40B57A pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #B5407A. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #40B57A below.

Is #40B57A good for buttons?

#40B57A works well for buttons and highlights, but use black text on #40B57A — white text only reaches 2.59:1, below the 4.5:1 needed for normal-size labels.

Is #40B57A the same as CSS mediumseagreen?

No — #40B57A is not the CSS named color mediumseagreen, but mediumseagreen (#3CB371) is the closest CSS named color.

#40B57A Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #40B57A

Not just a swatch — here's how #40B57A works with other colors. Named schemes with #40B57A in its natural role, and a note on why the supporting colors balance it.

Botanical Studio Lead · 5 colors

Lead #40B57A Secondary #4A6C3D Accent #AC6C00 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 #40B57A Accent #A8C4BB Surface #E1D9BE Secondary #9AA0A0 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.

Nordic Calm Accent · 5 colors

Accent #40B57A Secondary #ADB4B7 Surface #F1F2F0 Support #7895A3 Anchor #2D3236

Medium Sea 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 #40B57A Secondary #AC6C00 Accent #667C4D Surface #F1EDDD Anchor #392B1E

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 #40B57A Secondary #AFD2BC 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.

Build a working theme in the generator →

Color Lab

How #40B57A 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 38/100

Cool

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

Softness 52/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 32/100

Low

Airy and open — recedes, leaves the composition light.

Naturalness 81/100

Very high

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

Vintage feel 43/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 38/100

Low

Understated — leans refined without going austere.

Brand distinctiveness 53/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 63/100

High

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

Surface fit 29/100

Low

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

Print safety 72/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #40B57A

For UI

For branding

For interior

For fashion

People also use #40B57A with

Mantis Verdigris Fandango 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 7.2:1. Use

Subtle surface Use #DBEEE4 for cards and hover fills. Tint 80

Avoid beside #40B5A2 — 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 #40B57A 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: #40B57A;
  --color-base-rgb: 64 181 122;
  --color-base-oklch: oklch(69.2% 0.137 157.5);
  --color-50: #F3FBF7;
  --color-100: #E0F5EB;
  --color-200: #C3EAD6;
  --color-300: #99D7B8;
  --color-400: #71C199;
  --color-500: #50A57A;
  --color-600: #437F61;
  --color-700: #345B47;
  --color-800: #253C30;
  --color-900: #18251F;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  medium-sea-green: {
    50: '#F3FBF7',
    100: '#E0F5EB',
    200: '#C3EAD6',
    300: '#99D7B8',
    400: '#71C199',
    500: '#50A57A',
    600: '#437F61',
    700: '#345B47',
    800: '#253C30',
    900: '#18251F',
  },
}

$base: #40B57A;
$base-ink: #141310;
$base-50: #F3FBF7;
$base-100: #E0F5EB;
$base-200: #C3EAD6;
$base-300: #99D7B8;
$base-400: #71C199;
$base-500: #50A57A;
$base-600: #437F61;
$base-700: #345B47;
$base-800: #253C30;
$base-900: #18251F;
$base-hover: #339162;
$base-subtle: #C9E6D7;

{
    "color": {
        "base": {
            "value": "#40B57A",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3FBF7",
                "type": "color"
            },
            "100": {
                "value": "#E0F5EB",
                "type": "color"
            },
            "200": {
                "value": "#C3EAD6",
                "type": "color"
            },
            "300": {
                "value": "#99D7B8",
                "type": "color"
            },
            "400": {
                "value": "#71C199",
                "type": "color"
            },
            "500": {
                "value": "#50A57A",
                "type": "color"
            },
            "600": {
                "value": "#437F61",
                "type": "color"
            },
            "700": {
                "value": "#345B47",
                "type": "color"
            },
            "800": {
                "value": "#253C30",
                "type": "color"
            },
            "900": {
                "value": "#18251F",
                "type": "color"
            }
        }
    }
}

Palettes built on #40B57A

Color Lab

Pairs with #40B57A

UI roles & guardrails

In real applications

Scales

Every model

Export