Colors Encyclopedia

HEX atlas value

#FA0905

#FA0905 is a warm red HEX color close to Red. According to Colors Encyclopedia, it converts to RGB 250, 9, 5, HSL 1, 96%, 50%, has luminance 0.2053, and belongs to the vibrant group.

redwarmvibrant
#FA0905 Sample readable text
HEX #FA0905
RGB rgb(250, 9, 5)
HSL hsl(1 96% 50%)
CMYK cmyk(0, 96, 98, 2)
Luminance 0.2053
Contrast Black 5.11:1White 4.11:1

CSS

--color-fa0905: #FA0905;
.background-fa0905 { background-color: #FA0905; }
.text-fa0905 { color: #FA0905; }

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
Luminance0.2053
Black text5.11:1AA Pass
White text4.11:1AA 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
Download JSON Open API
Structured sections
Color systems
{"hex":"#FA0905","rgb":[250,9,5],"hsl":[1,96,50],"cmyk":[0,96,98,2],"luminance":0.2053,"contrast":{"black":5.11,"white":4.11}}
WCAG
{"AA":["#000000"],"AAA":[]}
Safe pairings
[{"name":"Black text","hex":"#000000","contrast":5.11,"wcagAA":true,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":4.11,"wcagAA":false,"wcagAAA":false}]
Accessible alternatives
[{"name":"#05F6FA","hex":"#05F6FA","family":"cyan","bestTextColor":"#000000","contrastBlack":15.57,"contrastWhite":1.35,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]},{"name":"#FA8405","hex":"#FA8405","family":"orange","bestTextColor":"#000000","contrastBlack":8.37,"contrastWhite":2.51,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000"]},{"name":"#A00603","hex":"#A00603","family":"red","bestTextColor":"#FFFFFF","contrastBlack":2.52,"contrastWhite":8.33,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#FC625F","hex":"#FC625F","family":"red","bestTextColor":"#000000","contrastBlack":7.05,"contrastWhite":2.98,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000"]},{"name":"Traffic Red","hex":"#CC0605","family":"red","bestTextColor":"#FFFFFF","contrastBlack":3.6,"contrastWhite":5.84,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":[]}]
AI context
{"semanticGroups":["warm red","vibrant","vibrant red","Red adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","high-energy accents","high-attention visual states"],"contrastSafeWith":["#000000"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/fa0905.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/red.json","https://www.colorsencyclopedia.com/api/colors/signal-red.json","https://www.colorsencyclopedia.com/api/colors/scarlet.json"]}
Harmonies
{"complementary":"#05F6FA","analogous":["#FA057B","#FA8405"],"triadic":["#05FA09","#0905FA"],"tetradic":["#7BFA05","#05F6FA","#8405FA"],"splitComplementary":["#05FA84","#057BFA"],"monochromatic":["#FC625F","#FA0905","#A00603"]}
Variants
{"light":"#FC625F","dark":"#A00603","saturated":"#FF0400","desaturated":"#DE2421","pastel":"#F38D8C","neon":"#FF2C29"}
Nearest named colors
[{"slug":"red","name":"Red","hex":"#FF0000","distance":11.445523142259598},{"slug":"signal-red","name":"Signal Red","hex":"#E60000","distance":22.494443758403985},{"slug":"scarlet","name":"Scarlet","hex":"#FF2400","distance":27.910571473905726},{"slug":"cadmium-red","name":"Cadmium Red","hex":"#E30022","distance":38.09199390948182},{"slug":"traffic-red","name":"Traffic Red","hex":"#CC0605","distance":46.09772228646444}]
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

HEX meaning and use

About #FA0905

#FA0905 is classified as a warm red value with vibrant visual character. #FA0905 is visually closest to Red, a named red color with HEX #FF0000.

The RGB channels are 250, 9, and 5, with red carrying the strongest channel weight. In HSL, the hue is 1deg with 96% saturation and 50% 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 0.2053, black text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 11.45, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text5.11:1AA Pass
White text4.11:1AA Fail

AA text options: #000000.

AAA text options: none in seed set.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #FA0905 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000005.11:1 · AA
White text#FFFFFF4.11:1 · Fail

Accessible Alternatives

#05F6FA#000000 text · best 15.57:1#05F6FA
#FA8405#000000 text · best 8.37:1#FA8405
#A00603#FFFFFF text · best 8.33:1#A00603
#FC625F#000000 text · best 7.05:1#FC625F
Traffic Red#FFFFFF text · best 5.84:1#CC0605

Generated Palette

#FA0905#FA0905
#05F6FA#05F6FA
#FA057B#FA057B
#FA8405#FA8405
#FC625F#FC625F
#A00603#A00603

Color Harmonies

#05F6FA#05F6FA
#FA057B#FA057B
#FA8405#FA8405
#05FA09#05FA09
#0905FA#0905FA

Variants

#FC625F#FC625F
#A00603#A00603
#FF0400#FF0400
#DE2421#DE2421
#F38D8C#F38D8C
#FF2C29#FF2C29

Nearest Named Colors

Red#FF0000
Signal Red#E60000
Scarlet#FF2400
Cadmium Red#E30022
Traffic Red#CC0605

Related HEX Guides

Red colorOpen the nearest named color reference for #FF0000.Signal Red colorOpen the nearest named color reference for #E60000.Scarlet colorOpen the nearest named color reference for #FF2400.Red color familyBrowse named red colors related to this HEX value.Warm colorsExplore colors with similar temperature behavior.Vibrant colorsFind colors in the vibrant 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.#FA0905 APIOpen the machine-readable JSON record for this HEX value.