HEX atlas value

#05FA42

#05FA42 is a cool green HEX color close to Fluorescent Green. According to Colors Encyclopedia, it converts to RGB 5, 250, 66, HSL 135, 96%, 50%, has luminance 0.688, and belongs to the vibrant group.

green cool vibrant

#05FA42 Sample readable text

HEX #05FA42

RGB rgb(5, 250, 66)

HSL hsl(135 96% 50%)

CMYK cmyk(98, 0, 74, 2)

Luminance 0.688

Contrast Black 14.76:1White 1.42:1

CSS

--color-05fa42: #05FA42;
.background-05fa42 { background-color: #05FA42; }
.text-05fa42 { color: #05FA42; }

Luminance0.688

Black text14.76:1AA Pass

White text1.42:1AA Fail

hexCanonical HEX value

rgbRed, green, blue channels

hslHue, saturation, lightness

cmykApproximate print conversion

wcagAA and AAA contrast options

harmoniesMathematical harmony sets

variantsGenerated tone variants

nearestColorsKnowledge graph neighbors

Structured sections

Color systems

{"hex":"#05FA42","rgb":[5,250,66],"hsl":[135,96,50],"cmyk":[98,0,74,2],"luminance":0.688,"contrast":{"black":14.76,"white":1.42}}

WCAG

{"AA":["#000000","#1A1A1A","#36454F"],"AAA":["#000000","#1A1A1A"]}

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":14.76,"wcagAA":true,"wcagAAA":true},{"name":"White text","hex":"#FFFFFF","contrast":1.42,"wcagAA":false,"wcagAAA":false}]

Accessible alternatives

[{"name":"#5FFC86","hex":"#5FFC86","family":"green","bestTextColor":"#000000","contrastBlack":15.75,"contrastWhite":1.33,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]},{"name":"Spring Green","hex":"#00FF7F","family":"green","bestTextColor":"#000000","contrastBlack":15.61,"contrastWhite":1.35,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]},{"name":"Neon Green","hex":"#39FF14","family":"green","bestTextColor":"#000000","contrastBlack":15.49,"contrastWhite":1.36,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]},{"name":"#05FABD","hex":"#05FABD","family":"cyan","bestTextColor":"#000000","contrastBlack":15.42,"contrastWhite":1.36,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]},{"name":"#00FF40","hex":"#00FF40","family":"green","bestTextColor":"#000000","contrastBlack":15.38,"contrastWhite":1.37,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]}]

AI context

{"semanticGroups":["cool green","vibrant","vibrant green","Fluorescent Green adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","high-energy accents","botanical and wellness palettes"],"contrastSafeWith":["#000000","#1A1A1A","#36454F"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/05fa42.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/fluorescent-green.json","https://www.colorsencyclopedia.com/api/colors/spring-green.json","https://www.colorsencyclopedia.com/api/colors/lime-green.json"]}

Harmonies

{"complementary":"#FA05BD","analogous":["#42FA05","#05FABD"],"triadic":["#4205FA","#FA4205"],"tetradic":["#0542FA","#FA05BD","#FABD05"],"splitComplementary":["#BD05FA","#FA0542"],"monochromatic":["#5FFC86","#05FA42","#03A02A"]}

Variants

{"light":"#5FFC86","dark":"#03A02A","saturated":"#00FF40","desaturated":"#21DE50","pastel":"#8CF3A5","neon":"#29FF5E"}

Nearest named colors

[{"slug":"fluorescent-green","name":"Fluorescent Green","hex":"#08FF08","distance":58.29236656715869},{"slug":"spring-green","name":"Spring Green","hex":"#00FF7F","distance":61.40846847137616},{"slug":"lime-green","name":"Lime Green","hex":"#32CD32","distance":65.62011886609167},{"slug":"lime","name":"Lime","hex":"#00FF00","distance":66.37770710110436},{"slug":"neon-green","name":"Neon Green","hex":"#39FF14","distance":69.60603422117941}]

HEX meaning and use

About #05FA42

#05FA42 is classified as a cool green value with vibrant visual character. #05FA42 is visually closest to Fluorescent Green, a named green color with HEX #08FF08.

The RGB channels are 5, 250, and 66, with green carrying the strongest channel weight. In HSL, the hue is 135deg with 96% saturation and 50% lightness, so this page treats it as a high-saturation, mid-lightness atlas color rather than a generic swatch.

According to Colors Encyclopedia, this HEX value works best for color conversion, WCAG contrast checks, CSS color tokens, and high-energy accents. Its luminance is 0.688, black text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 58.29, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text14.76:1AA Pass

White text1.42:1AA Fail

AA text options: #000000, #1A1A1A, #36454F.

AAA text options: #000000, #1A1A1A.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #05FA42 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#00000014.76:1 · AAA

White text#FFFFFF1.42:1 · Fail

Accessible Alternatives

#5FFC86#000000 text · best 15.75:1#5FFC86

Spring Green#000000 text · best 15.61:1#00FF7F

Neon Green#000000 text · best 15.49:1#39FF14

#05FABD#000000 text · best 15.42:1#05FABD

#00FF40#000000 text · best 15.38:1#00FF40

Generated Palette

#05FA42#05FA42

#FA05BD#FA05BD

#42FA05#42FA05

#05FABD#05FABD

#5FFC86#5FFC86

#03A02A#03A02A

Color Harmonies

#FA05BD#FA05BD

#42FA05#42FA05

#05FABD#05FABD

#4205FA#4205FA

#FA4205#FA4205

Variants

#5FFC86#5FFC86

#03A02A#03A02A

#00FF40#00FF40

#21DE50#21DE50

#8CF3A5#8CF3A5

#29FF5E#29FF5E

Nearest Named Colors

Fluorescent Green#08FF08

Spring Green#00FF7F

Lime Green#32CD32

Lime#00FF00

Neon Green#39FF14

#05FA42

CSS

Machine-Readable HEX Data (JSON)

About #05FA42

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides