HEX atlas value

#677128

#677128 is a warm yellow HEX color close to Fern Frond. According to Colors Encyclopedia, it converts to RGB 103, 113, 40, HSL 68, 48%, 30%, has luminance 0.1485, and belongs to the earth tone group.

yellow warm earth-tone

#677128 Sample readable text

HEX #677128

RGB rgb(103, 113, 40)

HSL hsl(68 48% 30%)

CMYK cmyk(9, 0, 65, 56)

Luminance 0.1485

Contrast Black 3.97:1White 5.29:1

CSS

--color-677128: #677128;
.background-677128 { background-color: #677128; }
.text-677128 { color: #677128; }

Luminance0.1485

Black text3.97:1AA Fail

White text5.29:1AA 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

Structured sections

Color systems

{"hex":"#677128","rgb":[103,113,40],"hsl":[68,48,30],"cmyk":[9,0,65,56],"luminance":0.1485,"contrast":{"black":3.97,"white":5.29}}

WCAG

{"AA":["#FFFFFF","#F5F5F5"],"AAA":[]}

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":3.97,"wcagAA":false,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":5.29,"wcagAA":true,"wcagAAA":false}]

Accessible alternatives

[{"name":"#292D10","hex":"#292D10","family":"yellow","bestTextColor":"#FFFFFF","contrastBlack":1.48,"contrastWhite":14.21,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#322871","hex":"#322871","family":"blue","bestTextColor":"#FFFFFF","contrastBlack":1.68,"contrastWhite":12.51,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#A5B540","hex":"#A5B540","family":"yellow","bestTextColor":"#000000","contrastBlack":9.28,"contrastWhite":2.26,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#715628","hex":"#715628","family":"orange","bestTextColor":"#FFFFFF","contrastBlack":3.06,"contrastWhite":6.85,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":[]},{"name":"#5B6039","hex":"#5B6039","family":"yellow","bestTextColor":"#FFFFFF","contrastBlack":3.18,"contrastWhite":6.61,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":[]}]

AI context

{"semanticGroups":["warm yellow","earth tone","earth tone yellow","Fern Frond adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","natural palettes","highlight and warning systems"],"contrastSafeWith":["#FFFFFF","#F5F5F5"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/677128.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/fern-frond.json","https://www.colorsencyclopedia.com/api/colors/dark-olive-green.json","https://www.colorsencyclopedia.com/api/colors/olive-green.json"]}

Harmonies

{"complementary":"#322871","analogous":["#715628","#437128"],"triadic":["#286771","#712867"],"tetradic":["#287156","#322871","#712843"],"splitComplementary":["#284371","#562871"],"monochromatic":["#A5B540","#677128","#292D10"]}

Variants

{"light":"#A5B540","dark":"#292D10","saturated":"#748217","desaturated":"#5B6039","pastel":"#A8B266","neon":"#A8C200"}

Nearest named colors

[{"slug":"fern-frond","name":"Fern Frond","hex":"#657220","distance":8.306623862918075},{"slug":"dark-olive-green","name":"Dark Olive Green","hex":"#556B2F","distance":20.223748416156685},{"slug":"olive-green","name":"Olive Green","hex":"#708238","distance":25.019992006393608},{"slug":"olive-drab","name":"Olive Drab","hex":"#6B8E23","distance":29.698484809834994},{"slug":"olive-leaf","name":"Olive Leaf","hex":"#6B8E23","distance":29.698484809834994}]

HEX meaning and use

About #677128

#677128 is classified as a warm yellow value with earth tone visual character. #677128 is visually closest to Fern Frond, a named green color with HEX #657220.

The RGB channels are 103, 113, and 40, with green carrying the strongest channel weight. In HSL, the hue is 68deg with 48% saturation and 30% lightness, so this page treats it as a moderate-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 0.1485, white text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 8.31, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text3.97:1AA Fail

White text5.29:1AA Pass

AA text options: #FFFFFF, #F5F5F5.

AAA text options: none in seed set.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #677128 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000003.97:1 · Fail

White text#FFFFFF5.29:1 · AA

Accessible Alternatives

#292D10#FFFFFF text · best 14.21:1#292D10

#322871#FFFFFF text · best 12.51:1#322871

#A5B540#000000 text · best 9.28:1#A5B540

#715628#FFFFFF text · best 6.85:1#715628

#5B6039#FFFFFF text · best 6.61:1#5B6039

Generated Palette

#677128#677128

#322871#322871

#715628#715628

#437128#437128

#A5B540#A5B540

#292D10#292D10

Color Harmonies

#322871#322871

#715628#715628

#437128#437128

#286771#286771

#712867#712867

Variants

#A5B540#A5B540

#292D10#292D10

#748217#748217

#5B6039#5B6039

#A8B266#A8B266

#A8C200#A8C200

Nearest Named Colors

Fern Frond#657220

Dark Olive Green#556B2F

Olive Green#708238

Olive Drab#6B8E23

Olive Leaf#6B8E23

#677128

CSS

Machine-Readable HEX Data (JSON)

About #677128

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides