HEX atlas value

#18A509

#18A509 is a cool green HEX color close to Forest Green. According to Colors Encyclopedia, it converts to RGB 24, 165, 9, HSL 114, 90%, 34%, has luminance 0.2712, and belongs to the jewel tone group.

green cool jewel-tone

#18A509 Sample readable text

HEX #18A509

RGB rgb(24, 165, 9)

HSL hsl(114 90% 34%)

CMYK cmyk(85, 0, 95, 35)

Luminance 0.2712

Contrast Black 6.42:1White 3.27:1

CSS

--color-18a509: #18A509;
.background-18a509 { background-color: #18A509; }
.text-18a509 { color: #18A509; }

Luminance0.2712

Black text6.42:1AA Pass

White text3.27:1AA 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":"#18A509","rgb":[24,165,9],"hsl":[114,90,34],"cmyk":[85,0,95,35],"luminance":0.2712,"contrast":{"black":6.42,"white":3.27}}

WCAG

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

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":6.42,"wcagAA":true,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":3.27,"wcagAA":false,"wcagAAA":false}]

Accessible alternatives

[{"name":"#2CF316","hex":"#2CF316","family":"green","bestTextColor":"#000000","contrastBlack":13.94,"contrastWhite":1.51,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#0B4E04","hex":"#0B4E04","family":"green","bestTextColor":"#FFFFFF","contrastBlack":2.11,"contrastWhite":9.97,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"Lime Green","hex":"#32CD32","family":"green","bestTextColor":"#000000","contrastBlack":9.91,"contrastWhite":2.12,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"Kelly Green","hex":"#4CBB17","family":"green","bestTextColor":"#000000","contrastBlack":8.43,"contrastWhite":2.49,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000"]},{"name":"#9509A5","hex":"#9509A5","family":"pink","bestTextColor":"#FFFFFF","contrastBlack":2.86,"contrastWhite":7.34,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF"]}]

AI context

{"semanticGroups":["cool green","jewel tone","jewel tone green","Forest Green adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","rich accent palettes","botanical and wellness palettes"],"contrastSafeWith":["#000000","#1A1A1A"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/18a509.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/forest-green.json","https://www.colorsencyclopedia.com/api/colors/green.json","https://www.colorsencyclopedia.com/api/colors/scheeles-green.json"]}

Harmonies

{"complementary":"#9509A5","analogous":["#66A509","#09A547"],"triadic":["#0918A5","#A50918"],"tetradic":["#0966A5","#9509A5","#A54709"],"splitComplementary":["#4709A5","#A50966"],"monochromatic":["#2CF316","#18A509","#0B4E04"]}

Variants

{"light":"#2CF316","dark":"#0B4E04","saturated":"#11AD00","desaturated":"#28921C","pastel":"#58E548","neon":"#15D600"}

Nearest named colors

[{"slug":"forest-green","name":"Forest Green","hex":"#228B22","distance":37.429934544425805},{"slug":"green","name":"Green","hex":"#008000","distance":45.0111097397076},{"slug":"scheeles-green","name":"Scheele Green","hex":"#478800","distance":55.95533933415113},{"slug":"kelly-green","name":"Kelly Green","hex":"#4CBB17","distance":58.172158288995945},{"slug":"lime-green","name":"Lime Green","hex":"#32CD32","distance":62.90468980926621}]

HEX meaning and use

About #18A509

#18A509 is classified as a cool green value with jewel tone visual character. #18A509 is visually closest to Forest Green, a named green color with HEX #228B22.

The RGB channels are 24, 165, and 9, with green carrying the strongest channel weight. In HSL, the hue is 114deg with 90% 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 rich accent palettes. Its luminance is 0.2712, black text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 37.43, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text6.42:1AA Pass

White text3.27:1AA Fail

AA text options: #000000, #1A1A1A.

AAA text options: none in seed set.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #18A509 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000006.42:1 · AA

White text#FFFFFF3.27:1 · Fail

Accessible Alternatives

#2CF316#000000 text · best 13.94:1#2CF316

#0B4E04#FFFFFF text · best 9.97:1#0B4E04

Lime Green#000000 text · best 9.91:1#32CD32

Kelly Green#000000 text · best 8.43:1#4CBB17

#9509A5#FFFFFF text · best 7.34:1#9509A5

Generated Palette

#18A509#18A509

#9509A5#9509A5

#66A509#66A509

#09A547#09A547

#2CF316#2CF316

#0B4E04#0B4E04

Color Harmonies

#9509A5#9509A5

#66A509#66A509

#09A547#09A547

#0918A5#0918A5

#A50918#A50918

Variants

#2CF316#2CF316

#0B4E04#0B4E04

#11AD00#11AD00

#28921C#28921C

#58E548#58E548

#15D600#15D600

Nearest Named Colors

Forest Green#228B22

Green#008000

Scheele Green#478800

Kelly Green#4CBB17

Lime Green#32CD32

#18A509

CSS

Machine-Readable HEX Data (JSON)

About #18A509

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides