HEX atlas value

#99AA03

#99AA03 is a warm yellow HEX color close to Acid Green. According to Colors Encyclopedia, it converts to RGB 153, 170, 3, HSL 66, 97%, 34%, has luminance 0.3553, and belongs to the balanced group.

yellow warm balanced

#99AA03 Sample readable text

HEX #99AA03

RGB rgb(153, 170, 3)

HSL hsl(66 97% 34%)

CMYK cmyk(10, 0, 98, 33)

Luminance 0.3553

Contrast Black 8.11:1White 2.59:1

CSS

--color-99aa03: #99AA03;
.background-99aa03 { background-color: #99AA03; }
.text-99aa03 { color: #99AA03; }

Luminance0.3553

Black text8.11:1AA Pass

White text2.59:1AA 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":"#99AA03","rgb":[153,170,3],"hsl":[66,97,34],"cmyk":[10,0,98,33],"luminance":0.3553,"contrast":{"black":8.11,"white":2.59}}

WCAG

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

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":8.11,"wcagAA":true,"wcagAAA":true},{"name":"White text","hex":"#FFFFFF","contrast":2.59,"wcagAA":false,"wcagAAA":false}]

Accessible alternatives

[{"name":"#E4FB0E","hex":"#E4FB0E","family":"yellow","bestTextColor":"#000000","contrastBlack":18.1,"contrastWhite":1.16,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]},{"name":"#1303AB","hex":"#1303AB","family":"blue","bestTextColor":"#FFFFFF","contrastBlack":1.63,"contrastWhite":12.9,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"Yellow Green","hex":"#9ACD32","family":"green","bestTextColor":"#000000","contrastBlack":11.15,"contrastWhite":1.88,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"Peridot","hex":"#B4C424","family":"yellow","bestTextColor":"#000000","contrastBlack":10.86,"contrastWhite":1.93,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"Acid Green","hex":"#B0BF1A","family":"yellow","bestTextColor":"#000000","contrastBlack":10.31,"contrastWhite":2.04,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]}]

AI context

{"semanticGroups":["warm yellow","balanced","balanced yellow","Acid Green adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","highlight and warning systems"],"contrastSafeWith":["#000000","#1A1A1A"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/99aa03.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/acid-green.json","https://www.colorsencyclopedia.com/api/colors/dark-goldenrod.json","https://www.colorsencyclopedia.com/api/colors/olive.json"]}

Harmonies

{"complementary":"#1303AB","analogous":["#AB6803","#46AB03"],"triadic":["#039AAB","#AB039A"],"tetradic":["#03AB68","#1303AB","#AB0346"],"splitComplementary":["#0346AB","#6803AB"],"monochromatic":["#E4FB0E","#99AA03","#485001"]}

Variants

{"light":"#E4FB0E","dark":"#485001","saturated":"#9CAD00","desaturated":"#8B9816","pastel":"#DBEC41","neon":"#C1D600"}

Nearest named colors

[{"slug":"acid-green","name":"Acid Green","hex":"#B0BF1A","distance":38.71692136521188},{"slug":"dark-goldenrod","name":"Dark Goldenrod","hex":"#B8860B","distance":48.176757881783615},{"slug":"olive","name":"Olive","hex":"#808000","distance":48.96937818678118},{"slug":"peridot","name":"Peridot","hex":"#B4C424","distance":49.93996395673509},{"slug":"yellow-green","name":"Yellow Green","hex":"#9ACD32","distance":58.60887304837041}]

HEX meaning and use

About #99AA03

#99AA03 is classified as a warm yellow value with balanced visual character. #99AA03 is visually closest to Acid Green, a named yellow color with HEX #B0BF1A.

The RGB channels are 153, 170, and 3, with green carrying the strongest channel weight. In HSL, the hue is 66deg with 97% saturation and 34% 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 highlight and warning systems. Its luminance is 0.3553, black text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 38.72, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text8.11:1AA Pass

White text2.59:1AA Fail

AA text options: #000000, #1A1A1A.

AAA text options: #000000.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #99AA03 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000008.11:1 · AAA

White text#FFFFFF2.59:1 · Fail

Accessible Alternatives

#E4FB0E#000000 text · best 18.1:1#E4FB0E

#1303AB#FFFFFF text · best 12.9:1#1303AB

Yellow Green#000000 text · best 11.15:1#9ACD32

Peridot#000000 text · best 10.86:1#B4C424

Acid Green#000000 text · best 10.31:1#B0BF1A

Generated Palette

#99AA03#99AA03

#1303AB#1303AB

#AB6803#AB6803

#46AB03#46AB03

#E4FB0E#E4FB0E

#485001#485001

Color Harmonies

#1303AB#1303AB

#AB6803#AB6803

#46AB03#46AB03

#039AAB#039AAB

#AB039A#AB039A

Variants

#E4FB0E#E4FB0E

#485001#485001

#9CAD00#9CAD00

#8B9816#8B9816

#DBEC41#DBEC41

#C1D600#C1D600

Nearest Named Colors

Acid Green#B0BF1A

Dark Goldenrod#B8860B

Olive#808000

Peridot#B4C424

Yellow Green#9ACD32

#99AA03

CSS

Machine-Readable HEX Data (JSON)

About #99AA03

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides