HEX atlas value

#E1FA05

#E1FA05 is a warm yellow HEX color close to Chartreuse Green. According to Colors Encyclopedia, it converts to RGB 225, 250, 5, HSL 66, 96%, 50%, has luminance 0.8439, and belongs to the vibrant group.

yellow warm vibrant

#E1FA05 Sample readable text

HEX #E1FA05

RGB rgb(225, 250, 5)

HSL hsl(66 96% 50%)

CMYK cmyk(10, 0, 98, 2)

Luminance 0.8439

Contrast Black 17.88:1White 1.17:1

CSS

--color-e1fa05: #E1FA05;
.background-e1fa05 { background-color: #E1FA05; }
.text-e1fa05 { color: #E1FA05; }

Luminance0.8439

Black text17.88:1AA Pass

White text1.17:1AA 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":"#E1FA05","rgb":[225,250,5],"hsl":[66,96,50],"cmyk":[10,0,98,2],"luminance":0.8439,"contrast":{"black":17.88,"white":1.17}}

WCAG

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

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":17.88,"wcagAA":true,"wcagAAA":true},{"name":"White text","hex":"#FFFFFF","contrast":1.17,"wcagAA":false,"wcagAAA":false}]

Accessible alternatives

[{"name":"Yellow","hex":"#FFFF00","family":"yellow","bestTextColor":"#000000","contrastBlack":19.56,"contrastWhite":1.07,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]},{"name":"#E6FF00","hex":"#E6FF00","family":"yellow","bestTextColor":"#000000","contrastBlack":18.67,"contrastWhite":1.12,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]},{"name":"#ECFC5F","hex":"#ECFC5F","family":"yellow","bestTextColor":"#000000","contrastBlack":18.66,"contrastWhite":1.13,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]},{"name":"Lemon","hex":"#FFF700","family":"yellow","bestTextColor":"#000000","contrastBlack":18.56,"contrastWhite":1.13,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]},{"name":"Chartreuse Green","hex":"#DFFF00","family":"yellow","bestTextColor":"#000000","contrastBlack":18.44,"contrastWhite":1.14,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]}]

AI context

{"semanticGroups":["warm yellow","vibrant","vibrant yellow","Chartreuse Green adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","high-energy accents","highlight and warning systems"],"contrastSafeWith":["#000000","#1A1A1A","#36454F"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/e1fa05.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/chartreuse-green.json","https://www.colorsencyclopedia.com/api/colors/electric-lime.json","https://www.colorsencyclopedia.com/api/colors/lemon.json"]}

Harmonies

{"complementary":"#1E05FA","analogous":["#FA9805","#67FA05"],"triadic":["#05E1FA","#FA05E1"],"tetradic":["#05FA98","#1E05FA","#FA0567"],"splitComplementary":["#0567FA","#9805FA"],"monochromatic":["#ECFC5F","#E1FA05","#90A003"]}

Variants

{"light":"#ECFC5F","dark":"#90A003","saturated":"#E6FF00","desaturated":"#CBDE21","pastel":"#E9F38C","neon":"#EAFF29"}

Nearest named colors

[{"slug":"chartreuse-green","name":"Chartreuse Green","hex":"#DFFF00","distance":7.3484692283495345},{"slug":"electric-lime","name":"Electric Lime","hex":"#CCFF00","distance":22.15851980616034},{"slug":"lemon","name":"Lemon","hex":"#FFF700","distance":30.56141357987225},{"slug":"cadmium-yellow","name":"Cadmium Yellow","hex":"#FFF600","distance":30.675723300355934},{"slug":"yellow","name":"Yellow","hex":"#FFFF00","distance":30.822070014844883}]

HEX meaning and use

About #E1FA05

#E1FA05 is classified as a warm yellow value with vibrant visual character. #E1FA05 is visually closest to Chartreuse Green, a named yellow color with HEX #DFFF00.

The RGB channels are 225, 250, and 5, with green carrying the strongest channel weight. In HSL, the hue is 66deg 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 0.8439, black text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 7.35, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text17.88:1AA Pass

White text1.17:1AA Fail

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

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

Accessibility-Safe Pairings and Alternatives

Use these pairings when #E1FA05 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#00000017.88:1 · AAA

White text#FFFFFF1.17:1 · Fail

Accessible Alternatives

Yellow#000000 text · best 19.56:1#FFFF00

#E6FF00#000000 text · best 18.67:1#E6FF00

#ECFC5F#000000 text · best 18.66:1#ECFC5F

Lemon#000000 text · best 18.56:1#FFF700

Chartreuse Green#000000 text · best 18.44:1#DFFF00

Generated Palette

#E1FA05#E1FA05

#1E05FA#1E05FA

#FA9805#FA9805

#67FA05#67FA05

#ECFC5F#ECFC5F

#90A003#90A003

Color Harmonies

#1E05FA#1E05FA

#FA9805#FA9805

#67FA05#67FA05

#05E1FA#05E1FA

#FA05E1#FA05E1

Variants

#ECFC5F#ECFC5F

#90A003#90A003

#E6FF00#E6FF00

#CBDE21#CBDE21

#E9F38C#E9F38C

#EAFF29#EAFF29

Nearest Named Colors

Chartreuse Green#DFFF00

Electric Lime#CCFF00

Lemon#FFF700

Cadmium Yellow#FFF600

Yellow#FFFF00

#E1FA05

CSS

Machine-Readable HEX Data (JSON)

About #E1FA05

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides