What color is #37A321?

#37A321 is a dark green. In RGB it is rgb(55, 163, 33), and in HSL hsl(110, 66%, 38%).

Is #37A321 accessible as text?

On white, #37A321 has a contrast ratio of 3.27:1 (fails WCAG AA for body text); on black it is 6.42:1 (passes). For text placed on #37A321, use black for the best readability.

What is the closest Tailwind color to #37A321?

The nearest Tailwind CSS token is green-600 (#00A63E).

What colors go well with #37A321?

#37A321 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #8C21A1. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #37A321 below.

Is #37A321 good for buttons?

#37A321 works well for buttons and highlights, but use black text on #37A321 — white text only reaches 3.27:1, below the 4.5:1 needed for normal-size labels.

Is #37A321 the same as CSS olivedrab?

No — #37A321 is not the CSS named color olivedrab, but olivedrab (#6B8E23) is the closest CSS named color.

#37A321 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #37A321

Not just a swatch — here's how #37A321 works with other colors. Named schemes with #37A321 in its natural role, and a note on why the supporting colors balance it.

Botanical Studio Lead · 5 colors

Lead #37A321 Secondary #4D6B3B Accent #AE6B00 Surface #EFEAD6 Anchor #3C2F21

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

Tech Product Signal · 5 colors

Signal #37A321 Surface #13161A Highlight #F4F6F8 Secondary #576770 Accent #6BC75B

Shamrock Green is the vivid signal in this product UI — on a near-black surface with cool white, a slate grey and a lighter tint of Shamrock Green.

Japanese Sand Base · 5 colors

Base #37A321 Surface #EEE9DC Highlight #F5F1E7 Secondary #B7B09F Ink #2B2723

Shamrock 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.

Minimal Editorial Surface · 5 colors

Surface #F7F4EF Accent #37A321 Secondary #9DBF97 Support #989286 Ink #17140F

Shamrock 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 Shamrock Green carrying the quiet middle.

Coastal Morning Lead · 5 colors

Lead #37A321 Accent #A8C4BA Surface #E2D9BE Secondary #9AA09F Anchor #193648

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

Build a working theme in the generator →

Color Lab

How #37A321 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 49/100

Neutral

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

Softness 41/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 39/100

Low

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

Naturalness 48/100

Moderate

Loosely natural — an earthy edge without being rustic.

Vintage feel 32/100

Low

A faint retro warmth without tipping into sepia.

Luxury 41/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 73/100

High

Bold and ownable — memorable as a primary brand color.

UI accent fit 76/100

High

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

Surface fit 20/100

Very low

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

Print safety 58/100

Moderate

Prints close, with a slight loss of vibrancy.

Pairs with #37A321

For UI

For branding

For interior

For fashion

People also use #37A321 with

Peridot Shamrock Green Mauveine Platinum Hunter Green

UI roles & guardrails

Primary action Safe as a filled button with near-black label. AA

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

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

Background Pair with #141310 text at 5.7:1. Use

Subtle surface Use #D5EED0 for cards and hover fills. Tint 80

Avoid beside #21A136 — 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 #37A321 at work across the surfaces designers actually ship.

Website / UI

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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: #37A321;
  --color-base-rgb: 55 163 33;
  --color-base-oklch: oklch(63.0% 0.190 140.8);
  --color-50: #F4FDF2;
  --color-100: #E1F9DC;
  --color-200: #C4F1BB;
  --color-300: #9BE28D;
  --color-400: #75D062;
  --color-500: #54B540;
  --color-600: #468A38;
  --color-700: #36622D;
  --color-800: #264021;
  --color-900: #192816;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  shamrock-green: {
    50: '#F4FDF2',
    100: '#E1F9DC',
    200: '#C4F1BB',
    300: '#9BE28D',
    400: '#75D062',
    500: '#54B540',
    600: '#468A38',
    700: '#36622D',
    800: '#264021',
    900: '#192816',
  },
}

$base: #37A321;
$base-ink: #141310;
$base-50: #F4FDF2;
$base-100: #E1F9DC;
$base-200: #C4F1BB;
$base-300: #9BE28D;
$base-400: #75D062;
$base-500: #54B540;
$base-600: #468A38;
$base-700: #36622D;
$base-800: #264021;
$base-900: #192816;
$base-hover: #2B811A;
$base-subtle: #C0E7B8;

{
    "color": {
        "base": {
            "value": "#37A321",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F4FDF2",
                "type": "color"
            },
            "100": {
                "value": "#E1F9DC",
                "type": "color"
            },
            "200": {
                "value": "#C4F1BB",
                "type": "color"
            },
            "300": {
                "value": "#9BE28D",
                "type": "color"
            },
            "400": {
                "value": "#75D062",
                "type": "color"
            },
            "500": {
                "value": "#54B540",
                "type": "color"
            },
            "600": {
                "value": "#468A38",
                "type": "color"
            },
            "700": {
                "value": "#36622D",
                "type": "color"
            },
            "800": {
                "value": "#264021",
                "type": "color"
            },
            "900": {
                "value": "#192816",
                "type": "color"
            }
        }
    }
}

Palettes built on #37A321

Color Lab

Pairs with #37A321

UI roles & guardrails

In real applications

Scales

Every model

Export