greenneutralCC0 survey name

Foam Green #90FDA9

Foam Green is a light, vivid neutral color (#90FDA9; HSL 134° 96% 78%). Name from the public-domain xkcd color survey (CC0), where it was contributed as “foam green”.

Use cases: Success states · Nature brands

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Families: Greens · Mint Colors

Color values

FormatValue
HEX#90FDA9
RGBrgb(144, 253, 169)
HSLhsl(134, 96%, 78%)
HSVhsv(134, 43%, 99%)
OKLCHoklch(90.76% 0.153 149.9)
OKLaboklab(90.76% -0.1327 0.0771)
CMYKcmyk(43.1%, 0%, 33.2%, 0.8%)
XYZxyz(53.7851, 79.0408, 49.9507)
CIE-LABlab(91.3, -48.7, 30.7)
CIE-LCHlch(91.3, 57.6, 147.8°)
Luminance0.790 (WCAG relative)
/* Foam Green */ --foam-green: #90fda9; color: #90fda9; background-color: #90fda9;

Source: xkcd color survey name (public domain, CC0). CSS keyword: foamgreen.

Shade scale

Perceptual 50–950 scale, interpolated in CIE-LAB. Step 500 is the base color. Edit in the shade generator →

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OKLCH ramp (perceptually uniform, modern CSS)

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Shades (toward black)

#81e197 #72c585 #64aa73 #569062 #487652 #3a5e42 #2d4632 #213023 #141b15 #000000

Tints (toward white)

#9dfeb2 #a9feba #b5fec3 #c1ffcb #ccffd4 #d6ffdd #e1ffe5 #ebffee #f5fff6 #ffffff

Tones (toward gray)

#9bfbaf #a5f9b5 #aef7bc #b7f5c2 #bff2c8 #c8f0ce #d0eed4 #d7ebda #dfe9e0 #e6e6e6

Color harmonies

Complementary

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#90FDA9
#FD90E4
#90fda9 #fd90e4

Analogous

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#AEFD90
#90FDA9
#90FDDF
#aefd90 #90fda9 #90fddf

Triadic

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#90FDA9
#A990FD
#FDA990
#90fda9 #a990fd #fda990

Tetradic

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#90FDA9
#90AEFD
#FD90E4
#FDDF90
#90fda9 #90aefd #fd90e4 #fddf90

Square

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#90FDA9
#90AEFD
#FD90E4
#FDDF90
#90fda9 #90aefd #fd90e4 #fddf90

Split Complementary

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#90FDA9
#DF90FD
#FD90AE
#90fda9 #df90fd #fd90ae

Monochromatic

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#18FB4C
#54FC7A
#90FDA9
#CCFED8
#E1FEE8
#18fb4c #54fc7a #90fda9 #ccfed8 #e1fee8

Accessibility & contrast

1.25
#90FDA9 on #FFFFFF
AA text ✗AA large ✗AAA text ✗UI 3:1 ✗
16.81
#90FDA9 on #000000
AA text ✓AA large ✓AAA text ✓UI 3:1 ✓

Best text on foam green

16.81
#000000 text

WCAG 2.1: AA needs ≥4.5:1 for normal text, ≥3:1 for large text and UI components; AAA needs ≥7:1 / ≥4.5:1. Open the contrast checker →

Color blindness preview

Simulation using the Machado et al. (2009) physiological model, severity 1.0. This is an approximation of perception — not a medical assessment.

Normal vision
Protanopia (red-blind)
#FEEDA4
Deuteranopia (green-blind)
#EEE2AE
Tritanopia (blue-blind)
#7DF9E7

Closest named colors

Nearest matches by CIEDE2000 perceptual distance (ΔE₀₀) across the full color database.

ColorNameΔE₀₀
Mint Green #8FFF9F1.98
Baby Green #8CFF9E2.08
Seafoam Green #7AF9AB2.63
Palegreen #98FB983.19
Light Seafoam #A0FEBF4.01
Lightgreen #90EE904.21

Colors that go with foam green

Top matches by hue harmony, contrast and saturation compatibility.

Deep Green #02590F
6.9:1
Same hue family as foam green (Δh 5°) — guaranteed harmony
Camouflage Green #4B6113
5.6:1
Warm/cool bridge (Δh 57°) — adds depth without tension
Dark Indigo #1F0954
13.7:1
Triadic harmony (Δh ≈124°) — balanced three-way contrast
Burgundy #800020
8.7:1
Split-complementary angle (Δh ≈149°) — strong but softer than direct complement
Rich Purple #720058
9.1:1
Complementary hue (Δh ≈180°) — maximum hue contrast

Values computed from the sRGB color model. CMYK is the naive sRGB conversion without an ICC profile. RGB percentages may differ between color-managed applications.