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Emerald Core Soft
Color detail

Emerald Core Soft

Green · Hue 120
Hex
#51A451
RGB
rgb(81, 164, 81)
HSL
hsl(120, 34%, 48%)
CMYK
cmyk(51%, 0%, 51%, 36%)
Metrics
S 34% · L 48%
Contrast (WCAG)
on white
3.1:1AA Large
on black
6.8:1AA
Save to journalSign in to saveStart palette from thisRecent trail

About this color

Emerald Core Soft (#51A451) belongs to the green family — hue 120°, 34% saturation, 48% lightness. Copy the hex, RGB, or HSL value above, or paste the CSS custom property below into your stylesheet to reference this color directly.

CSS
:root {
  --colorarchive-emerald-core-soft: #51A451;
  --colorarchive-emerald-core-soft-hsl: hsl(120, 34%, 48%);
  --colorarchive-emerald-core-soft-rgb: rgb(81, 164, 81);
}

AI Color Names

Let AI suggest alternative poetic names for this color in English and Chinese.

Design Context

BalancedTrustworthyGrowing
Common in

Finance · Insurance · Environmental

Pairs well with

White for clean professionalism, dark navy for authority, gold for premium

Design tip

The go-to for financial dashboards and environmental brands. Green conveys stability — use for success states and positive metrics.

Cultural context ▶

Green universally represents nature, growth, and money. In Islam, green is sacred. In Western finance, it signals profit.

Color Origins

Green family

The color of growth, currency, and the longest-running brands.

Heritage

Verdigris (copper acetate) gave medieval manuscripts their greens; it was unstable, eating through parchment over centuries. Terre verte (green earth) was used for under-painting flesh in the Italian tradition. Scheele's green and Paris green, both 19th-century arsenic compounds, killed an unknown number of wallpaper-makers and Victorian children before viridian and phthalo greens replaced them. Modern green pigments are remarkably stable; the iconic Brunswick green that became British Racing Green dates to the same chemistry.

Across cultures

Green is the dominant color of Islam — the Prophet's banner, the flags of many Muslim-majority nations, the domes of mosques. In Ireland green is national identity, partly through the shamrock and partly through the political binary with orange. In Japan, green and blue (ao/midori) were a single concept until recently; traffic 'green lights' there are still a deeper teal-ish shade. Across many cultures green simultaneously means growth, fertility, envy, and the supernatural.

In the wild

Starbucks' green has barely changed since 1971. John Deere has used essentially the same green since 1837 — the longest continuous brand color in commerce. The U.S. dollar is green because of the chemistry of camphor and copper sulfate, not branding. Whatsapp, Spotify, and Heineken all anchor on green; each chose it for a different reason (community, sound, Dutch heritage). Hospital scrubs were originally white but switched to green/teal because surgeons were getting after-image fatigue.

How it reads

Green is the hue the eye is most efficient at parsing — half of all our cone cells are tuned near 555nm. That makes green the easiest color to look at for long periods, which is why it dominates productivity software, 'go' indicators, and reading-friendly UI. At low saturation it reads as natural, calm, premium (sage, olive). At high saturation it reads as urgent or playful (Mountain Dew, Slack notifications). It carries one of the strongest semantic loads in product design: 'success', 'go', 'natural', 'safe'.

This particular tone

A confident mid-tone — this is the workhorse register of the hue, and the band where most successful brand colors live.

Lightness band: At mid-lightness the hue carries its full character. This is the band where most identity colors live: bright enough to be distinctive at small sizes, deep enough to sit cleanly on a white canvas.

Saturation band: The clear, mid-saturation register is the most common identity sweet spot — saturated enough to register as a 'real' color, restrained enough not to fight typography or photography placed over it.

Brands using a similar color

Within the public brand-guidelines reference catalog, these are the closest matches to #51A451.

  • Googleprimary
    Google Green · #34A853
    →
  • GitHubaccent
    Success Green · #2DA44E
    →
  • Slackaccent
    Slack Green · #2EB67D
    →

Cultures using a similar color

From the cultural-palette catalog, these regions feature a color close to #51A451.

  • EgyptMalachite Green
    #3D9970 · Copper carbonate, Sinai mines
    →
  • MoroccoMint Tea Green
    #62A87C · Atlas mountain spearmint
    →
  • VietnamRice Paddy Green
    #5F8D4E · Mekong Delta
    →

Tonal strip

All lightness levels at this hue and saturation. Click any to navigate.

Palette moves

Instead of stopping at one swatch, use nearby, opposite, and tonal neighbors to branch into a broader palette.

Lighter companion
Emerald Radiant Soft
#62B262 · hsl(120, 34%, 54%)
Darker companion
Emerald Velvet Soft
#479047 · hsl(120, 34%, 42%)
Complementary counterpoint
Fuchsia Core Soft
#A451A4 · hsl(300, 34%, 48%)
Analogous lead
Celadon Core Soft
#51A473 · hsl(145, 34%, 48%)
Analogous echo
Moss Core Soft
#6DA451 · hsl(100, 34%, 48%)
Triadic +120°
Iris Core Soft
#5151A4 · hsl(240, 34%, 48%)
Triadic +240°
Crimson Core Soft
#A45151 · hsl(0, 34%, 48%)
Split-comp +150°
Plum Core Soft
#7A51A4 · hsl(270, 34%, 48%)
Split-comp +210°
Blush Core Soft
#A4517A · hsl(330, 34%, 48%)
Export preview
Base: Emerald Core Soft #51A451
Lighter companion: Emerald Radiant Soft #62B262
Darker companion: Emerald Velvet Soft #479047
Complementary counterpoint: Fuchsia Core Soft #A451A4
Analogous lead: Celadon Core Soft #51A473
Analogous echo: Moss Core Soft #6DA451
Triadic +120°: Iris Core Soft #5151A4
Triadic +240°: Crimson Core Soft #A45151
Split-comp +150°: Plum Core Soft #7A51A4
Split-comp +210°: Blush Core Soft #A4517A

Compare

See how Emerald Core Soft compares side by side with related colors.

vsEmerald Radiant SoftvsEmerald Velvet SoftvsFuchsia Core SoftvsCeladon Core SoftvsMoss Core SoftvsIris Core Soft

Nearest neighbors

The closest archive matches by hue, saturation, and lightness.

Search by hex
Nearby match
Emerald Core Dust
#5B9A5B · hsl(120, 26%, 48%)
Nearby match
Emerald Velvet Soft
#479047 · hsl(120, 34%, 42%)
Nearby match
Emerald Radiant Soft
#62B262 · hsl(120, 34%, 54%)
Nearby match
Clover Core Soft
#58A451 · hsl(115, 34%, 48%)
Nearby match
Emerald Core Muted
#649064 · hsl(120, 18%, 48%)
Nearby match
Emerald Velvet Dust
#4F874F · hsl(120, 26%, 42%)

Accessible pairings

Archive colors that meet WCAG contrast standards when paired with this color. Use as text-on-background or background-on-text.

Contrast checker
AA5.1:1
Fuchsia Ink Faint
#272027
AA5.2:1
Fuchsia Ink Muted
#2A1D2A
AA5.2:1
Fuchsia Ink Dust
#2D1A2D
AA5.2:1
Fuchsia Ink Soft
#301830
AA5.2:1
Fuchsia Ink Clear
#371037
AA5.2:1
Fuchsia Ink Vivid
#3E093E

Color Vision Simulation

How this color appears with different color vision deficiencies.

Full simulator
Deuteranopia
#797272
Protanopia
#7E7E6D
Tritanopia
#587E81
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Appears in collections
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