What color is #21BB69?

#21BB69 is a medium, vivid teal-green. In RGB it is rgb(33, 187, 105), and in HSL hsl(148, 70%, 43%).

Is #21BB69 accessible as text?

On white, #21BB69 has a contrast ratio of 2.51:1 (fails WCAG AA for body text); on black it is 8.38:1 (passes). For text placed on #21BB69, use black for the best readability.

What is the closest Tailwind color to #21BB69?

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

What colors go well with #21BB69?

#21BB69 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #BA2173. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #21BB69 below.

Is #21BB69 good for buttons?

#21BB69 works well for buttons and highlights, but use black text on #21BB69 — white text only reaches 2.51:1, below the 4.5:1 needed for normal-size labels.

Is #21BB69 the same as CSS mediumseagreen?

No — #21BB69 is not the CSS named color mediumseagreen, but mediumseagreen (#3CB371) is the closest CSS named color.

#21BB69 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #21BB69

Not just a swatch — here's how #21BB69 works with other colors. Named schemes with #21BB69 in its natural role, and a note on why the supporting colors balance it.

Botanical Studio Lead · 5 colors

Lead #21BB69 Secondary #4B6C3D 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 #21BB69 Accent #A8C4BA 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 #21BB69 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 #21BB69 Secondary #AC6C00 Accent #677C4D 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 #21BB69 Secondary #ADD6B8 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 #21BB69 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

Neutral

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

Softness 47/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 32/100

Low

Airy and open — recedes, leaves the composition light.

Naturalness 60/100

Moderate

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

Vintage feel 33/100

Low

A faint retro warmth without tipping into sepia.

Luxury 36/100

Low

Understated — leans refined without going austere.

Brand distinctiveness 66/100

High

Bold and ownable — memorable as a primary brand color.

UI accent fit 59/100

Moderate

Workable accent with care around contrast.

Surface fit 26/100

Low

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

Print safety 64/100

High

Prints close, with a slight loss of vibrancy.

Pairs with #21BB69

For UI

For branding

For interior

For fashion

People also use #21BB69 with

Malachite Tiffany Blue 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 7.4:1. Use

Subtle surface Use #D3F1E1 for cards and hover fills. Tint 80

Avoid beside #21BA9C — 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 #21BB69 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: #21BB69;
  --color-base-rgb: 33 187 105;
  --color-base-oklch: oklch(69.8% 0.170 153.3);
  --color-50: #F1FDF7;
  --color-100: #DBFAEA;
  --color-200: #BAF3D4;
  --color-300: #8AE5B5;
  --color-400: #5FD395;
  --color-500: #3DB876;
  --color-600: #358C5E;
  --color-700: #2B6446;
  --color-800: #20412F;
  --color-900: #15281E;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  medium-sea-green: {
    50: '#F1FDF7',
    100: '#DBFAEA',
    200: '#BAF3D4',
    300: '#8AE5B5',
    400: '#5FD395',
    500: '#3DB876',
    600: '#358C5E',
    700: '#2B6446',
    800: '#20412F',
    900: '#15281E',
  },
}

$base: #21BB69;
$base-ink: #141310;
$base-50: #F1FDF7;
$base-100: #DBFAEA;
$base-200: #BAF3D4;
$base-300: #8AE5B5;
$base-400: #5FD395;
$base-500: #3DB876;
$base-600: #358C5E;
$base-700: #2B6446;
$base-800: #20412F;
$base-900: #15281E;
$base-hover: #1A9554;
$base-subtle: #BCEBD2;

{
    "color": {
        "base": {
            "value": "#21BB69",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1FDF7",
                "type": "color"
            },
            "100": {
                "value": "#DBFAEA",
                "type": "color"
            },
            "200": {
                "value": "#BAF3D4",
                "type": "color"
            },
            "300": {
                "value": "#8AE5B5",
                "type": "color"
            },
            "400": {
                "value": "#5FD395",
                "type": "color"
            },
            "500": {
                "value": "#3DB876",
                "type": "color"
            },
            "600": {
                "value": "#358C5E",
                "type": "color"
            },
            "700": {
                "value": "#2B6446",
                "type": "color"
            },
            "800": {
                "value": "#20412F",
                "type": "color"
            },
            "900": {
                "value": "#15281E",
                "type": "color"
            }
        }
    }
}

Palettes built on #21BB69

Color Lab

Pairs with #21BB69

UI roles & guardrails

In real applications

Scales

Every model

Export