HEX atlas value

#EFCA4D

#EFCA4D is a warm yellow HEX color close to Buttercup. According to Colors Encyclopedia, it converts to RGB 239, 202, 77, HSL 46, 84%, 62%, has luminance 0.6113, and belongs to the vibrant group.

yellow warm vibrant

#EFCA4D Sample readable text

HEX #EFCA4D

RGB rgb(239, 202, 77)

HSL hsl(46 84% 62%)

CMYK cmyk(0, 15, 68, 6)

Luminance 0.6113

Contrast Black 13.23:1White 1.59:1

CSS

--color-efca4d: #EFCA4D;
.background-efca4d { background-color: #EFCA4D; }
.text-efca4d { color: #EFCA4D; }

Luminance0.6113

Black text13.23:1AA Pass

White text1.59:1AA 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":"#EFCA4D","rgb":[239,202,77],"hsl":[46,84,62],"cmyk":[0,15,68,6],"luminance":0.6113,"contrast":{"black":13.23,"white":1.59}}

WCAG

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

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":13.23,"wcagAA":true,"wcagAAA":true},{"name":"White text","hex":"#FFFFFF","contrast":1.59,"wcagAA":false,"wcagAAA":false}]

Accessible alternatives

[{"name":"#F7E3A1","hex":"#F7E3A1","family":"yellow","bestTextColor":"#000000","contrastBlack":16.46,"contrastWhite":1.28,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]},{"name":"#C4EF4D","hex":"#C4EF4D","family":"green","bestTextColor":"#000000","contrastBlack":15.8,"contrastWhite":1.33,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]},{"name":"Mustard","hex":"#FFDB58","family":"yellow","bestTextColor":"#000000","contrastBlack":15.53,"contrastWhite":1.35,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]},{"name":"Dandelion","hex":"#F0E130","family":"yellow","bestTextColor":"#000000","contrastBlack":15.52,"contrastWhite":1.35,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]},{"name":"Naples Yellow","hex":"#FADA5E","family":"yellow","bestTextColor":"#000000","contrastBlack":15.25,"contrastWhite":1.38,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]}]

AI context

{"semanticGroups":["warm yellow","vibrant","vibrant yellow","Buttercup 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/efca4d.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/buttercup.json","https://www.colorsencyclopedia.com/api/colors/mustard.json","https://www.colorsencyclopedia.com/api/colors/naples-yellow.json"]}

Harmonies

{"complementary":"#4D73EF","analogous":["#EF784D","#C4EF4D"],"triadic":["#4DEFCA","#CA4DEF"],"tetradic":["#4DEF78","#4D73EF","#EF4DC4"],"splitComplementary":["#4DC4EF","#784DEF"],"monochromatic":["#F7E3A1","#EFCA4D","#CEA212"]}

Variants

{"light":"#F7E3A1","dark":"#CEA212","saturated":"#FFD23D","desaturated":"#DABE62","pastel":"#F5EAC7","neon":"#FFDB66"}

Nearest named colors

[{"slug":"buttercup","name":"Buttercup","hex":"#F3C13A","distance":21.400934559032695},{"slug":"mustard","name":"Mustard","hex":"#FFDB58","distance":25.80697580112788},{"slug":"naples-yellow","name":"Naples Yellow","hex":"#FADA5E","distance":25.80697580112788},{"slug":"saffron","name":"Saffron","hex":"#F4C430","distance":30.033314835362415},{"slug":"dandelion","name":"Dandelion","hex":"#F0E130","distance":37.027017163147235}]

HEX meaning and use

About #EFCA4D

#EFCA4D is classified as a warm yellow value with vibrant visual character. #EFCA4D is visually closest to Buttercup, a named orange color with HEX #F3C13A.

The RGB channels are 239, 202, and 77, with red carrying the strongest channel weight. In HSL, the hue is 46deg with 84% saturation and 62% 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 0.6113, black text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 21.40, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text13.23:1AA Pass

White text1.59:1AA Fail

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

AAA text options: #000000, #1A1A1A.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #EFCA4D needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#00000013.23:1 · AAA

White text#FFFFFF1.59:1 · Fail

Accessible Alternatives

#F7E3A1#000000 text · best 16.46:1#F7E3A1

#C4EF4D#000000 text · best 15.8:1#C4EF4D

Mustard#000000 text · best 15.53:1#FFDB58

Dandelion#000000 text · best 15.52:1#F0E130

Naples Yellow#000000 text · best 15.25:1#FADA5E

Generated Palette

#EFCA4D#EFCA4D

#4D73EF#4D73EF

#EF784D#EF784D

#C4EF4D#C4EF4D

#F7E3A1#F7E3A1

#CEA212#CEA212

Color Harmonies

#4D73EF#4D73EF

#EF784D#EF784D

#C4EF4D#C4EF4D

#4DEFCA#4DEFCA

#CA4DEF#CA4DEF

Variants

#F7E3A1#F7E3A1

#CEA212#CEA212

#FFD23D#FFD23D

#DABE62#DABE62

#F5EAC7#F5EAC7

#FFDB66#FFDB66

Nearest Named Colors

Buttercup#F3C13A

Mustard#FFDB58

Naples Yellow#FADA5E

Saffron#F4C430

Dandelion#F0E130

#EFCA4D

CSS

Machine-Readable HEX Data (JSON)

About #EFCA4D

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides