Colors Encyclopedia

HEX atlas value

#283923

#283923 is a cool green HEX color close to Asphalt. According to Colors Encyclopedia, it converts to RGB 40, 57, 35, HSL 106, 24%, 18%, has luminance 0.035, and belongs to the dark and earth tone groups.

greencooldarkearth-tone
#283923 Sample readable text
HEX #283923
RGB rgb(40, 57, 35)
HSL hsl(106 24% 18%)
CMYK cmyk(30, 0, 39, 78)
Luminance 0.035
Contrast Black 1.7:1White 12.35:1

CSS

--color-283923: #283923;
.background-283923 { background-color: #283923; }
.text-283923 { color: #283923; }

Machine-readable data

Machine-Readable HEX Data (JSON)

Structured HEX color data for conversion, WCAG checks, CSS generation, automation, and AI ingestion.

AI-Ready Dataset v1.0.0
Luminance0.035
Black text1.7:1AA Fail
White text12.35:1AA Pass
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
Download JSON Open API
Structured sections
Color systems
{"hex":"#283923","rgb":[40,57,35],"hsl":[106,24,18],"cmyk":[30,0,39,78],"luminance":0.035,"contrast":{"black":1.7,"white":12.35}}
WCAG
{"AA":["#FFFFFF","#F5F5F5"],"AAA":["#FFFFFF","#F5F5F5"]}
Safe pairings
[{"name":"Black text","hex":"#000000","contrast":1.7,"wcagAA":false,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":12.35,"wcagAA":true,"wcagAAA":true}]
Accessible alternatives
[{"name":"Black","hex":"#000000","family":"gray","bestTextColor":"#FFFFFF","contrastBlack":1,"contrastWhite":21,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"Rubber","hex":"#2A2725","family":"gray","bestTextColor":"#FFFFFF","contrastBlack":1.42,"contrastWhite":14.83,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"Slate Black","hex":"#26282A","family":"gray","bestTextColor":"#FFFFFF","contrastBlack":1.42,"contrastWhite":14.79,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#342339","hex":"#342339","family":"purple","bestTextColor":"#FFFFFF","contrastBlack":1.45,"contrastWhite":14.52,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"Asphalt","hex":"#2B2B2B","family":"gray","bestTextColor":"#FFFFFF","contrastBlack":1.48,"contrastWhite":14.15,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]}]
AI context
{"semanticGroups":["cool green","dark","earth tone","dark green","earth tone green","Asphalt adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","natural palettes","dark theme accents","botanical and wellness palettes"],"contrastSafeWith":["#FFFFFF","#F5F5F5"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/283923.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/asphalt.json","https://www.colorsencyclopedia.com/api/colors/rubber.json","https://www.colorsencyclopedia.com/api/colors/slate-black.json"]}
Harmonies
{"complementary":"#342339","analogous":["#333923","#233929"],"triadic":["#232839","#392328"],"tetradic":["#233339","#342339","#392923"],"splitComplementary":["#292339","#392333"],"monochromatic":["#507246","#283923","#000000"]}
Variants
{"light":"#507246","dark":"#000000","saturated":"#234319","desaturated":"#2D2F2D","pastel":"#687864","neon":"#1F8500"}
Nearest named colors
[{"slug":"asphalt","name":"Asphalt","hex":"#2B2B2B","distance":16.401219466856727},{"slug":"rubber","name":"Rubber","hex":"#2A2725","distance":18.2208671582886},{"slug":"slate-black","name":"Slate Black","hex":"#26282A","distance":18.49324200890693},{"slug":"jet","name":"Jet","hex":"#343434","distance":21.400934559032695},{"slug":"charcoal-blue","name":"Charcoal Blue","hex":"#263238","distance":22.22611077089287}]
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

HEX meaning and use

About #283923

#283923 is classified as a cool green value with dark and earth tone visual character. #283923 is visually closest to Asphalt, a named gray color with HEX #2B2B2B.

The RGB channels are 40, 57, and 35, with green carrying the strongest channel weight. In HSL, the hue is 106deg with 24% saturation and 18% lightness, so this page treats it as a low-saturation, dark 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 natural palettes. Its luminance is 0.035, white text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 16.40, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text1.7:1AA Fail
White text12.35:1AA Pass

AA text options: #FFFFFF, #F5F5F5.

AAA text options: #FFFFFF, #F5F5F5.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #283923 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000001.7:1 · Fail
White text#FFFFFF12.35:1 · AAA

Accessible Alternatives

Black#FFFFFF text · best 21:1#000000
Rubber#FFFFFF text · best 14.83:1#2A2725
Slate Black#FFFFFF text · best 14.79:1#26282A
#342339#FFFFFF text · best 14.52:1#342339
Asphalt#FFFFFF text · best 14.15:1#2B2B2B

Generated Palette

#283923#283923
#342339#342339
#333923#333923
#233929#233929
#507246#507246
Black#000000

Color Harmonies

#342339#342339
#333923#333923
#233929#233929
#232839#232839
#392328#392328

Variants

#507246#507246
Black#000000
#234319#234319
#2D2F2D#2D2F2D
#687864#687864
#1F8500#1F8500

Nearest Named Colors

Asphalt#2B2B2B
Rubber#2A2725
Slate Black#26282A
Jet#343434
Charcoal Blue#263238

Related HEX Guides

Asphalt colorOpen the nearest named color reference for #2B2B2B.Rubber colorOpen the nearest named color reference for #2A2725.Slate Black colorOpen the nearest named color reference for #26282A.Green color familyBrowse named green colors related to this HEX value.Cool colorsExplore colors with similar temperature behavior.Dark colorsFind colors in the dark group.Earth Tone colorsFind colors in the earth tone group.Color palettesBrowse palette systems related to generated color combinations.Compare colorsCompare named colors near this HEX value.Accessible colorsBrowse WCAG-friendly named colors and safe text options.#283923 APIOpen the machine-readable JSON record for this HEX value.