HEX atlas value

#AC4D15

#AC4D15 is a warm orange HEX color close to Rust. According to Colors Encyclopedia, it converts to RGB 172, 77, 21, HSL 22, 78%, 38%, has luminance 0.1413, and belongs to the vibrant group.

orange warm vibrant

#AC4D15 Sample readable text

HEX #AC4D15

RGB rgb(172, 77, 21)

HSL hsl(22 78% 38%)

CMYK cmyk(0, 55, 88, 33)

Luminance 0.1413

Contrast Black 3.83:1White 5.49:1

CSS

--color-ac4d15: #AC4D15;
.background-ac4d15 { background-color: #AC4D15; }
.text-ac4d15 { color: #AC4D15; }

Luminance0.1413

Black text3.83:1AA Fail

White text5.49:1AA 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":"#AC4D15","rgb":[172,77,21],"hsl":[22,78,38],"cmyk":[0,55,88,33],"luminance":0.1413,"contrast":{"black":3.83,"white":5.49}}

WCAG

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

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":3.83,"wcagAA":false,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":5.49,"wcagAA":true,"wcagAAA":false}]

Accessible alternatives

[{"name":"#5B280B","hex":"#5B280B","family":"orange","bestTextColor":"#FFFFFF","contrastBlack":1.75,"contrastWhite":11.97,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#AC1529","hex":"#AC1529","family":"red","bestTextColor":"#FFFFFF","contrastBlack":2.89,"contrastWhite":7.26,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF"]},{"name":"#AC9815","hex":"#AC9815","family":"yellow","bestTextColor":"#000000","contrastBlack":7.26,"contrastWhite":2.89,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000"]},{"name":"Saddle Brown","hex":"#8B4513","family":"orange","bestTextColor":"#FFFFFF","contrastBlack":2.96,"contrastWhite":7.1,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF"]},{"name":"#E67737","hex":"#E67737","family":"orange","bestTextColor":"#000000","contrastBlack":7.06,"contrastWhite":2.98,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000"]}]

AI context

{"semanticGroups":["warm orange","vibrant","vibrant orange","Rust adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","high-energy accents"],"contrastSafeWith":["#FFFFFF","#F5F5F5"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/ac4d15.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/rust.json","https://www.colorsencyclopedia.com/api/colors/sienna.json","https://www.colorsencyclopedia.com/api/colors/mahogany.json"]}

Harmonies

{"complementary":"#1575AC","analogous":["#AC1529","#AC9815"],"triadic":["#15AC4D","#4D15AC"],"tetradic":["#29AC15","#1575AC","#9815AC"],"splitComplementary":["#15AC98","#1529AC"],"monochromatic":["#E67737","#AC4D15","#5B280B"]}

Variants

{"light":"#E67737","dark":"#5B280B","saturated":"#C24700","desaturated":"#97522B","pastel":"#DC9165","neon":"#EB5600"}

Nearest named colors

[{"slug":"rust","name":"Rust","hex":"#B7410E","distance":17.72004514666935},{"slug":"sienna","name":"Sienna","hex":"#A0522D","distance":27.294688127912362},{"slug":"mahogany","name":"Mahogany","hex":"#C04000","distance":31.78049716414141},{"slug":"saddle-brown","name":"Saddle Brown","hex":"#8B4513","distance":34.0147027033899},{"slug":"burnt-orange","name":"Burnt Orange","hex":"#CC5500","distance":39.102429592034305}]

HEX meaning and use

About #AC4D15

#AC4D15 is classified as a warm orange value with vibrant visual character. #AC4D15 is visually closest to Rust, a named orange color with HEX #B7410E.

The RGB channels are 172, 77, and 21, with red carrying the strongest channel weight. In HSL, the hue is 22deg 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 0.1413, white text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 17.72, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text3.83:1AA Fail

White text5.49:1AA Pass

AA text options: #FFFFFF, #F5F5F5.

AAA text options: none in seed set.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #AC4D15 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000003.83:1 · Fail

White text#FFFFFF5.49:1 · AA

Accessible Alternatives

#5B280B#FFFFFF text · best 11.97:1#5B280B

#AC1529#FFFFFF text · best 7.26:1#AC1529

#AC9815#000000 text · best 7.26:1#AC9815

Saddle Brown#FFFFFF text · best 7.1:1#8B4513

#E67737#000000 text · best 7.06:1#E67737

Generated Palette

#AC4D15#AC4D15

#1575AC#1575AC

#AC1529#AC1529

#AC9815#AC9815

#E67737#E67737

#5B280B#5B280B

Color Harmonies

#1575AC#1575AC

#AC1529#AC1529

#AC9815#AC9815

#15AC4D#15AC4D

#4D15AC#4D15AC

Variants

#E67737#E67737

#5B280B#5B280B

#C24700#C24700

#97522B#97522B

#DC9165#DC9165

#EB5600#EB5600

Nearest Named Colors

Rust#B7410E

Sienna#A0522D

Mahogany#C04000

Saddle Brown#8B4513

Burnt Orange#CC5500

#AC4D15

CSS

Machine-Readable HEX Data (JSON)

About #AC4D15

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides