HEX atlas value

#668551

#668551 is a cool green HEX color close to Cactus Green. According to Colors Encyclopedia, it converts to RGB 102, 133, 81, HSL 96, 24%, 42%, has luminance 0.2019, and belongs to the muted and earth tone groups.

green cool muted earth-tone

#668551 Sample readable text

HEX #668551

RGB rgb(102, 133, 81)

HSL hsl(96 24% 42%)

CMYK cmyk(23, 0, 39, 48)

Luminance 0.2019

Contrast Black 5.04:1White 4.17:1

CSS

--color-668551: #668551;
.background-668551 { background-color: #668551; }
.text-668551 { color: #668551; }

Luminance0.2019

Black text5.04:1AA Pass

White text4.17:1AA 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":"#668551","rgb":[102,133,81],"hsl":[96,24,42],"cmyk":[23,0,39,48],"luminance":0.2019,"contrast":{"black":5.04,"white":4.17}}

WCAG

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

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":5.04,"wcagAA":true,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":4.17,"wcagAA":false,"wcagAAA":false}]

Accessible alternatives

[{"name":"#3A4C2F","hex":"#3A4C2F","family":"green","bestTextColor":"#FFFFFF","contrastBlack":2.25,"contrastWhite":9.32,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#94B181","hex":"#94B181","family":"green","bestTextColor":"#000000","contrastBlack":8.87,"contrastWhite":2.37,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#705185","hex":"#705185","family":"purple","bestTextColor":"#FFFFFF","contrastBlack":3.2,"contrastWhite":6.55,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":[]},{"name":"#619C3A","hex":"#619C3A","family":"green","bestTextColor":"#000000","contrastBlack":6.32,"contrastWhite":3.32,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":[]},{"name":"Agave","hex":"#6F8F72","family":"green","bestTextColor":"#000000","contrastBlack":5.85,"contrastWhite":3.59,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":[]}]

AI context

{"semanticGroups":["cool green","muted","earth tone","muted green","earth tone green","Cactus Green adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","muted interface themes","natural palettes","botanical and wellness palettes"],"contrastSafeWith":["#000000"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/668551.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/cactus-green.json","https://www.colorsencyclopedia.com/api/colors/epoxy-green.json","https://www.colorsencyclopedia.com/api/colors/olive-green.json"]}

Harmonies

{"complementary":"#705185","analogous":["#808551","#518557"],"triadic":["#516685","#855166"],"tetradic":["#518085","#705185","#855751"],"splitComplementary":["#575185","#855180"],"monochromatic":["#94B181","#668551","#3A4C2F"]}

Variants

{"light":"#94B181","dark":"#3A4C2F","saturated":"#619C3A","desaturated":"#6B6D69","pastel":"#A9B2A3","neon":"#66FF00"}

Nearest named colors

[{"slug":"cactus-green","name":"Cactus Green","hex":"#587156","distance":24.919871588754223},{"slug":"epoxy-green","name":"Epoxy Green","hex":"#4E8A57","distance":25.238858928247925},{"slug":"olive-green","name":"Olive Green","hex":"#708238","distance":27.09243436828813},{"slug":"fern-green","name":"Fern Green","hex":"#4F7942","distance":29.966648127543394},{"slug":"agave","name":"Agave","hex":"#6F8F72","distance":35.63705936241092}]

HEX meaning and use

About #668551

#668551 is classified as a cool green value with muted and earth tone visual character. #668551 is visually closest to Cactus Green, a named green color with HEX #587156.

The RGB channels are 102, 133, and 81, with green carrying the strongest channel weight. In HSL, the hue is 96deg with 24% saturation and 42% lightness, so this page treats it as a low-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 muted interface themes. Its luminance is 0.2019, black text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 24.92, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text5.04:1AA Pass

White text4.17:1AA Fail

AA text options: #000000.

AAA text options: none in seed set.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #668551 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000005.04:1 · AA

White text#FFFFFF4.17:1 · Fail

Accessible Alternatives

#3A4C2F#FFFFFF text · best 9.32:1#3A4C2F

#94B181#000000 text · best 8.87:1#94B181

#705185#FFFFFF text · best 6.55:1#705185

#619C3A#000000 text · best 6.32:1#619C3A

Agave#000000 text · best 5.85:1#6F8F72

Generated Palette

#668551#668551

#705185#705185

#808551#808551

#518557#518557

#94B181#94B181

#3A4C2F#3A4C2F

Color Harmonies

#705185#705185

#808551#808551

#518557#518557

#516685#516685

#855166#855166

Variants

#94B181#94B181

#3A4C2F#3A4C2F

#619C3A#619C3A

#6B6D69#6B6D69

#A9B2A3#A9B2A3

#66FF00#66FF00

Nearest Named Colors

Cactus Green#587156

Epoxy Green#4E8A57

Olive Green#708238

Fern Green#4F7942

Agave#6F8F72

#668551

CSS

Machine-Readable HEX Data (JSON)

About #668551

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides