HEX atlas value

#AC6615

#AC6615 is a warm orange HEX color close to Sienna. According to Colors Encyclopedia, it converts to RGB 172, 102, 21, HSL 32, 78%, 38%, has luminance 0.1833, and belongs to the vibrant group.

orange warm vibrant

#AC6615 Sample readable text

HEX #AC6615

RGB rgb(172, 102, 21)

HSL hsl(32 78% 38%)

CMYK cmyk(0, 41, 88, 33)

Luminance 0.1833

Contrast Black 4.67:1White 4.5:1

CSS

--color-ac6615: #AC6615;
.background-ac6615 { background-color: #AC6615; }
.text-ac6615 { color: #AC6615; }

Luminance0.1833

Black text4.67:1AA Pass

White text4.5:1AA 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":"#AC6615","rgb":[172,102,21],"hsl":[32,78,38],"cmyk":[0,41,88,33],"luminance":0.1833,"contrast":{"black":4.67,"white":4.5}}

WCAG

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

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":4.67,"wcagAA":true,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":4.5,"wcagAA":true,"wcagAAA":false}]

Accessible alternatives

[{"name":"#5B360B","hex":"#5B360B","family":"orange","bestTextColor":"#FFFFFF","contrastBlack":1.98,"contrastWhite":10.62,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#E69537","hex":"#E69537","family":"orange","bestTextColor":"#000000","contrastBlack":8.72,"contrastWhite":2.41,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#A7AC15","hex":"#A7AC15","family":"yellow","bestTextColor":"#000000","contrastBlack":8.55,"contrastWhite":2.45,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#AC1A15","hex":"#AC1A15","family":"red","bestTextColor":"#FFFFFF","contrastBlack":2.91,"contrastWhite":7.21,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF"]},{"name":"#155CAC","hex":"#155CAC","family":"blue","bestTextColor":"#FFFFFF","contrastBlack":3.16,"contrastWhite":6.65,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":[]}]

AI context

{"semanticGroups":["warm orange","vibrant","vibrant orange","Sienna adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","high-energy accents"],"contrastSafeWith":["#000000","#FFFFFF"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/ac6615.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/sienna.json","https://www.colorsencyclopedia.com/api/colors/copper.json","https://www.colorsencyclopedia.com/api/colors/polished-copper.json"]}

Harmonies

{"complementary":"#155CAC","analogous":["#AC1A15","#A7AC15"],"triadic":["#15AC66","#6615AC"],"tetradic":["#15AC1A","#155CAC","#AC15A7"],"splitComplementary":["#15A7AC","#1A15AC"],"monochromatic":["#E69537","#AC6615","#5B360B"]}

Variants

{"light":"#E69537","dark":"#5B360B","saturated":"#C26700","desaturated":"#97652B","pastel":"#DCA565","neon":"#EB7D00"}

Nearest named colors

[{"slug":"sienna","name":"Sienna","hex":"#A0522D","distance":33.46640106136302},{"slug":"copper","name":"Copper","hex":"#B87333","distance":34.828149534535996},{"slug":"polished-copper","name":"Polished Copper","hex":"#B87333","distance":34.828149534535996},{"slug":"dark-goldenrod","name":"Dark Goldenrod","hex":"#B8860B","distance":35.608987629529715},{"slug":"ochre","name":"Ochre","hex":"#CC7722","distance":38.49675310984031}]

HEX meaning and use

About #AC6615

#AC6615 is classified as a warm orange value with vibrant visual character. #AC6615 is visually closest to Sienna, a named orange color with HEX #A0522D.

The RGB channels are 172, 102, and 21, with red carrying the strongest channel weight. In HSL, the hue is 32deg with 78% saturation and 38% 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 high-energy accents. Its luminance is 0.1833, black text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 33.47, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text4.67:1AA Pass

White text4.5:1AA Pass

AA text options: #000000, #FFFFFF.

AAA text options: none in seed set.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #AC6615 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000004.67:1 · AA

White text#FFFFFF4.5:1 · AA

Accessible Alternatives

#5B360B#FFFFFF text · best 10.62:1#5B360B

#E69537#000000 text · best 8.72:1#E69537

#A7AC15#000000 text · best 8.55:1#A7AC15

#AC1A15#FFFFFF text · best 7.21:1#AC1A15

#155CAC#FFFFFF text · best 6.65:1#155CAC

Generated Palette

#AC6615#AC6615

#155CAC#155CAC

#AC1A15#AC1A15

#A7AC15#A7AC15

#E69537#E69537

#5B360B#5B360B

Color Harmonies

#155CAC#155CAC

#AC1A15#AC1A15

#A7AC15#A7AC15

#15AC66#15AC66

#6615AC#6615AC

Variants

#E69537#E69537

#5B360B#5B360B

#C26700#C26700

#97652B#97652B

#DCA565#DCA565

#EB7D00#EB7D00

Nearest Named Colors

Sienna#A0522D

Copper#B87333

Polished Copper#B87333

Dark Goldenrod#B8860B

Ochre#CC7722

#AC6615

CSS

Machine-Readable HEX Data (JSON)

About #AC6615

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides