HEX atlas value

#F66A5A

#F66A5A is a warm red HEX color close to Burnt Sienna. According to Colors Encyclopedia, it converts to RGB 246, 106, 90, HSL 6, 90%, 66%, has luminance 0.3064, and belongs to the vibrant group.

red warm vibrant

#F66A5A Sample readable text

HEX #F66A5A

RGB rgb(246, 106, 90)

HSL hsl(6 90% 66%)

CMYK cmyk(0, 57, 63, 4)

Luminance 0.3064

Contrast Black 7.13:1White 2.95:1

CSS

--color-f66a5a: #F66A5A;
.background-f66a5a { background-color: #F66A5A; }
.text-f66a5a { color: #F66A5A; }

Luminance0.3064

Black text7.13:1AA Pass

White text2.95:1AA 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":"#F66A5A","rgb":[246,106,90],"hsl":[6,90,66],"cmyk":[0,57,63,4],"luminance":0.3064,"contrast":{"black":7.13,"white":2.95}}

WCAG

{"AA":["#000000","#1A1A1A"],"AAA":["#000000"]}

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":7.13,"wcagAA":true,"wcagAAA":true},{"name":"White text","hex":"#FFFFFF","contrast":2.95,"wcagAA":false,"wcagAAA":false}]

Accessible alternatives

[{"name":"#5AE7F6","hex":"#5AE7F6","family":"cyan","bestTextColor":"#000000","contrastBlack":14.2,"contrastWhite":1.48,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#FBB9B1","hex":"#FBB9B1","family":"red","bestTextColor":"#000000","contrastBlack":12.68,"contrastWhite":1.66,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#F6B85A","hex":"#F6B85A","family":"orange","bestTextColor":"#000000","contrastBlack":11.92,"contrastWhite":1.76,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"Coral","hex":"#FF7F50","family":"orange","bestTextColor":"#000000","contrastBlack":8.4,"contrastWhite":2.5,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000"]},{"name":"Coral Reef","hex":"#FD7C6E","family":"red","bestTextColor":"#000000","contrastBlack":8.28,"contrastWhite":2.54,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000"]}]

AI context

{"semanticGroups":["warm red","vibrant","vibrant red","Burnt Sienna adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","high-energy accents","high-attention visual states"],"contrastSafeWith":["#000000","#1A1A1A"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/f66a5a.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/burnt-sienna.json","https://www.colorsencyclopedia.com/api/colors/terracotta.json","https://www.colorsencyclopedia.com/api/colors/tomato.json"]}

Harmonies

{"complementary":"#5AE7F6","analogous":["#F65A99","#F6B85A"],"triadic":["#5AF66A","#6A5AF6"],"tetradic":["#99F65A","#5AE7F6","#B85AF6"],"splitComplementary":["#5AF6B8","#5A99F6"],"monochromatic":["#FBB9B1","#F66A5A","#E9220C"]}

Variants

{"light":"#FBB9B1","dark":"#E9220C","saturated":"#FF6352","desaturated":"#E3796D","pastel":"#F9DAD7","neon":"#FF887A"}

Nearest named colors

[{"slug":"burnt-sienna","name":"Burnt Sienna","hex":"#E97451","distance":18.708286933869708},{"slug":"terracotta","name":"Terracotta","hex":"#E2725B","distance":21.563858652847824},{"slug":"tomato","name":"Tomato","hex":"#FF6347","distance":22.15851980616034},{"slug":"coral","name":"Coral","hex":"#FF7F50","distance":24.939927826679853},{"slug":"coral-reef","name":"Coral Reef","hex":"#FD7C6E","distance":27.80287754891569}]

HEX meaning and use

About #F66A5A

#F66A5A is classified as a warm red value with vibrant visual character. #F66A5A is visually closest to Burnt Sienna, a named red color with HEX #E97451.

The RGB channels are 246, 106, and 90, with red carrying the strongest channel weight. In HSL, the hue is 6deg with 90% saturation and 66% 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 0.3064, black text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 18.71, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text7.13:1AA Pass

White text2.95:1AA Fail

AA text options: #000000, #1A1A1A.

AAA text options: #000000.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #F66A5A needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000007.13:1 · AAA

White text#FFFFFF2.95:1 · Fail

Accessible Alternatives

#5AE7F6#000000 text · best 14.2:1#5AE7F6

#FBB9B1#000000 text · best 12.68:1#FBB9B1

#F6B85A#000000 text · best 11.92:1#F6B85A

Coral#000000 text · best 8.4:1#FF7F50

Coral Reef#000000 text · best 8.28:1#FD7C6E

Generated Palette

#F66A5A#F66A5A

#5AE7F6#5AE7F6

#F65A99#F65A99

#F6B85A#F6B85A

#FBB9B1#FBB9B1

#E9220C#E9220C

Color Harmonies

#5AE7F6#5AE7F6

#F65A99#F65A99

#F6B85A#F6B85A

#5AF66A#5AF66A

#6A5AF6#6A5AF6

Variants

#FBB9B1#FBB9B1

#E9220C#E9220C

#FF6352#FF6352

#E3796D#E3796D

#F9DAD7#F9DAD7

#FF887A#FF887A

Nearest Named Colors

Burnt Sienna#E97451

Terracotta#E2725B

Tomato#FF6347

Coral#FF7F50

Coral Reef#FD7C6E

#F66A5A

CSS

Machine-Readable HEX Data (JSON)

About #F66A5A

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides