HEX atlas value

#FF2400

#FF2400 is a warm red HEX color close to Scarlet. According to Colors Encyclopedia, it converts to RGB 255, 36, 0, HSL 8, 100%, 50%, has luminance 0.2252, and belongs to the vibrant group.

red warm vibrant

#FF2400 Sample readable text

HEX #FF2400

RGB rgb(255, 36, 0)

HSL hsl(8 100% 50%)

CMYK cmyk(0, 86, 100, 0)

Luminance 0.2252

Contrast Black 5.5:1White 3.82:1

CSS

--color-ff2400: #FF2400;
.background-ff2400 { background-color: #FF2400; }
.text-ff2400 { color: #FF2400; }

Luminance0.2252

Black text5.5:1AA Pass

White text3.82:1AA 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":"#FF2400","rgb":[255,36,0],"hsl":[8,100,50],"cmyk":[0,86,100,0],"luminance":0.2252,"contrast":{"black":5.5,"white":3.82}}

WCAG

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

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":5.5,"wcagAA":true,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":3.82,"wcagAA":false,"wcagAAA":false}]

Accessible alternatives

[{"name":"#00DDFF","hex":"#00DDFF","family":"cyan","bestTextColor":"#000000","contrastBlack":12.79,"contrastWhite":1.64,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#FFA200","hex":"#FFA200","family":"orange","bestTextColor":"#000000","contrastBlack":10.42,"contrastWhite":2.02,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#A31600","hex":"#A31600","family":"red","bestTextColor":"#FFFFFF","contrastBlack":2.67,"contrastWhite":7.86,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#FF725C","hex":"#FF725C","family":"red","bestTextColor":"#000000","contrastBlack":7.81,"contrastWhite":2.69,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000"]},{"name":"International Orange","hex":"#FF4F00","family":"orange","bestTextColor":"#000000","contrastBlack":6.37,"contrastWhite":3.3,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":[]}]

AI context

{"semanticGroups":["warm red","vibrant","vibrant red","Scarlet 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/ff2400.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/scarlet.json","https://www.colorsencyclopedia.com/api/colors/orange-red.json","https://www.colorsencyclopedia.com/api/colors/red.json"]}

Harmonies

{"complementary":"#00DDFF","analogous":["#FF005D","#FFA200"],"triadic":["#00FF22","#2200FF"],"tetradic":["#5EFF00","#00DDFF","#A200FF"],"splitComplementary":["#00FFA2","#005EFF"],"monochromatic":["#FF725C","#FF2400","#A31600"]}

Variants

{"light":"#FF725C","dark":"#A31600","saturated":"#FF2200","desaturated":"#E3371C","pastel":"#F59889","neon":"#FF4529"}

Nearest named colors

[{"slug":"scarlet","name":"Scarlet","hex":"#FF2400","distance":0},{"slug":"orange-red","name":"Orange Red","hex":"#FF4500","distance":33},{"slug":"red","name":"Red","hex":"#FF0000","distance":36},{"slug":"international-orange","name":"International Orange","hex":"#FF4F00","distance":43},{"slug":"signal-red","name":"Signal Red","hex":"#E60000","distance":43.829214001622255}]

HEX meaning and use

About #FF2400

#FF2400 is classified as a warm red value with vibrant visual character. #FF2400 is visually closest to Scarlet, a named red color with HEX #FF2400.

The RGB channels are 255, 36, and 0, with red carrying the strongest channel weight. In HSL, the hue is 8deg with 100% 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 0.2252, black text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 0.00, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text5.5:1AA Pass

White text3.82:1AA Fail

AA text options: #000000, #1A1A1A.

AAA text options: none in seed set.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #FF2400 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000005.5:1 · AA

White text#FFFFFF3.82:1 · Fail

Accessible Alternatives

#00DDFF#000000 text · best 12.79:1#00DDFF

#FFA200#000000 text · best 10.42:1#FFA200

#A31600#FFFFFF text · best 7.86:1#A31600

#FF725C#000000 text · best 7.81:1#FF725C

International Orange#000000 text · best 6.37:1#FF4F00

Generated Palette

Scarlet#FF2400

#00DDFF#00DDFF

#FF005D#FF005D

#FFA200#FFA200

#FF725C#FF725C

#A31600#A31600

Color Harmonies

#00DDFF#00DDFF

#FF005D#FF005D

#FFA200#FFA200

#00FF22#00FF22

#2200FF#2200FF

Variants

#FF725C#FF725C

#A31600#A31600

#FF2200#FF2200

#E3371C#E3371C

#F59889#F59889

#FF4529#FF4529

Nearest Named Colors

Scarlet#FF2400

Orange Red#FF4500

Red#FF0000

International Orange#FF4F00

Signal Red#E60000

#FF2400

CSS

Machine-Readable HEX Data (JSON)

About #FF2400

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides