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Seafoam Nocturne Pure
Color detail

Seafoam Nocturne Pure

Green · Hue 140
Hex
#046223
RGB
rgb(4, 98, 35)
HSL
hsl(140, 92%, 20%)
CMYK
cmyk(96%, 0%, 64%, 62%)
Metrics
S 92% · L 20%
Contrast (WCAG)
on white
7.6:1AA
on black
2.8:1Fail
Save to journalSign in to saveStart palette from thisRecent trail

About this color

Seafoam Nocturne Pure (#046223) belongs to the green family — hue 140°, 92% saturation, 20% 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-seafoam-nocturne-pure: #046223;
  --colorarchive-seafoam-nocturne-pure-hsl: hsl(140, 92%, 20%);
  --colorarchive-seafoam-nocturne-pure-rgb: rgb(4, 98, 35);
}

AI Color Names

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

Design Context

PrestigiousTimelessAuthoritative
Common in

Banking · Law Firms · Luxury Real Estate

Pairs well with

Gold, ivory, or warm white for classic elegance

Design tip

Excellent for dark mode themes and premium interfaces. Deep green with gold accents creates an instantly luxurious feel.

Cultural context ▶

Deep greens like forest and hunter green evoke tradition, wealth, and the British countryside. Common in Ivy League branding.

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 jewel tone — saturated and dark at once. This is the register of velvet, deep enamel, and old-world luxury.

Lightness band: At this depth the hue starts behaving like a neutral — it can substitute for black in many contexts while still carrying a faint chromatic temperature. It pairs especially well with off-whites and warm metallics.

Saturation band: At this saturation the color is doing work. It reads as a brand statement, a sport accessory, or a UI signal. It should be used in small, deliberate doses against quieter neighbors; large fields at this saturation will exhaust the eye.

Brands using a similar color

Within the public brand-guidelines reference catalog, these are the closest matches to #046223.

  • Starbucksprimary
    Starbucks Green · #006241
    →
  • Airbnbneutral
    Hof Gray · #484848
    →
  • Xiaohongshu 小红书neutral
    Slate Text · #333333
    →

Cultures using a similar color

From the cultural-palette catalog, these regions feature a color close to #046223.

  • BrazilAmazon Green
    #1B6D3F · Tropical rainforest canopy
    →
  • England (London)Pub Tile Green
    #1F4D2E · Victorian pub interior dado tiling
    →
  • IndiaIndia Green
    #138808 · Indian flag — Ashoka green
    →

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
Seafoam Shadow Pure
#068932 · hsl(140, 92%, 28%)
Darker companion
Seafoam Ink Pure
#034519 · hsl(140, 92%, 14%)
Complementary counterpoint
Rose Nocturne Pure
#620443 · hsl(320, 92%, 20%)
Analogous lead
Teal Nocturne Pure
#046243 · hsl(160, 92%, 20%)
Analogous echo
Clover Nocturne Pure
#0C6204 · hsl(115, 92%, 20%)
Triadic +120°
Orchid Nocturne Pure
#230462 · hsl(260, 92%, 20%)
Triadic +240°
Ember Nocturne Pure
#622304 · hsl(20, 92%, 20%)
Split-comp +150°
Magenta Nocturne Pure
#520462 · hsl(290, 92%, 20%)
Split-comp +210°
Merlot Nocturne Pure
#620414 · hsl(350, 92%, 20%)
Export preview
Base: Seafoam Nocturne Pure #046223
Lighter companion: Seafoam Shadow Pure #068932
Darker companion: Seafoam Ink Pure #034519
Complementary counterpoint: Rose Nocturne Pure #620443
Analogous lead: Teal Nocturne Pure #046243
Analogous echo: Clover Nocturne Pure #0C6204
Triadic +120°: Orchid Nocturne Pure #230462
Triadic +240°: Ember Nocturne Pure #622304
Split-comp +150°: Magenta Nocturne Pure #520462
Split-comp +210°: Merlot Nocturne Pure #620414

Compare

See how Seafoam Nocturne Pure compares side by side with related colors.

vsSeafoam Shadow PurevsSeafoam Ink PurevsRose Nocturne PurevsTeal Nocturne PurevsClover Nocturne PurevsOrchid Nocturne Pure

Nearest neighbors

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

Search by hex
Nearby match
Seafoam Nocturne Bright
#085E25 · hsl(140, 84%, 20%)
Nearby match
Seafoam Ink Pure
#034519 · hsl(140, 92%, 14%)
Nearby match
Celadon Nocturne Pure
#04622B · hsl(145, 92%, 20%)
Nearby match
Seafoam Shadow Pure
#068932 · hsl(140, 92%, 28%)
Nearby match
Seafoam Ink Bright
#06421A · hsl(140, 84%, 14%)
Nearby match
Seafoam Nocturne Vivid
#0D5926 · hsl(140, 74%, 20%)

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
AAA7.2:1
Rose Veil Faint
#FAF9FA
AAA7.2:1
Rose Veil Muted
#FBF9FA
AAA7.2:1
Rose Veil Dust
#FBF9FA
AAA7.2:1
Rose Veil Soft
#FCF8FA
AAA7.2:1
Rose Veil Clear
#FDF7FB
AAA7.1:1
Rose Veil Vivid
#FEF6FB

Color Vision Simulation

How this color appears with different color vision deficiencies.

Full simulator
Deuteranopia
#3D363E
Protanopia
#41423A
Tritanopia
#154749
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