Colors Encyclopedia

HEX atlas value

#C33D28

#C33D28 is a warm red HEX color close to Persian Red. According to Colors Encyclopedia, it converts to RGB 195, 61, 40, HSL 8, 66%, 46%, has luminance 0.1509, and belongs to the balanced group.

redwarmbalanced
#C33D28 Sample readable text
HEX #C33D28
RGB rgb(195, 61, 40)
HSL hsl(8 66% 46%)
CMYK cmyk(0, 69, 79, 24)
Luminance 0.1509
Contrast Black 4.02:1White 5.23:1

CSS

--color-c33d28: #C33D28;
.background-c33d28 { background-color: #C33D28; }
.text-c33d28 { color: #C33D28; }

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
Luminance0.1509
Black text4.02:1AA Fail
White text5.23:1AA 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
Download JSON Open API
Structured sections
Color systems
{"hex":"#C33D28","rgb":[195,61,40],"hsl":[8,66,46],"cmyk":[0,69,79,24],"luminance":0.1509,"contrast":{"black":4.02,"white":5.23}}
WCAG
{"AA":["#FFFFFF","#F5F5F5"],"AAA":[]}
Safe pairings
[{"name":"Black text","hex":"#000000","contrast":4.02,"wcagAA":false,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":5.23,"wcagAA":true,"wcagAAA":false}]
Accessible alternatives
[{"name":"#772518","hex":"#772518","family":"red","bestTextColor":"#FFFFFF","contrastBlack":2.06,"contrastWhite":10.18,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#28AEC3","hex":"#28AEC3","family":"cyan","bestTextColor":"#000000","contrastBlack":7.93,"contrastWhite":2.65,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000"]},{"name":"#E07767","hex":"#E07767","family":"red","bestTextColor":"#000000","contrastBlack":7,"contrastWhite":3,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000"]},{"name":"#C38A28","hex":"#C38A28","family":"orange","bestTextColor":"#000000","contrastBlack":6.99,"contrastWhite":3.01,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":[]},{"name":"Firebrick","hex":"#B22222","family":"red","bestTextColor":"#FFFFFF","contrastBlack":3.14,"contrastWhite":6.68,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":[]}]
AI context
{"semanticGroups":["warm red","balanced","balanced red","Persian Red adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","high-attention visual states"],"contrastSafeWith":["#FFFFFF","#F5F5F5"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/c33d28.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/persian-red.json","https://www.colorsencyclopedia.com/api/colors/rust.json","https://www.colorsencyclopedia.com/api/colors/firebrick.json"]}
Harmonies
{"complementary":"#28AEC3","analogous":["#C32861","#C38A28"],"triadic":["#28C33D","#3D28C3"],"tetradic":["#61C328","#28AEC3","#8A28C3"],"splitComplementary":["#28C38A","#2861C3"],"monochromatic":["#E07767","#C33D28","#772518"]}
Variants
{"light":"#E07767","dark":"#772518","saturated":"#DD2A0E","desaturated":"#A94F42","pastel":"#DB998F","neon":"#FF3414"}
Nearest named colors
[{"slug":"persian-red","name":"Persian Red","hex":"#CC3333","distance":17.378147196982766},{"slug":"rust","name":"Rust","hex":"#B7410E","distance":28.91366458960192},{"slug":"firebrick","name":"Firebrick","hex":"#B22222","distance":32.46536616149585},{"slug":"poppy-red","name":"Poppy Red","hex":"#DC343B","distance":32.66496594212215},{"slug":"vermilion","name":"Vermilion","hex":"#E34234","distance":34.539832078341085}]
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

HEX meaning and use

About #C33D28

#C33D28 is classified as a warm red value with balanced visual character. #C33D28 is visually closest to Persian Red, a named red color with HEX #CC3333.

The RGB channels are 195, 61, and 40, with red carrying the strongest channel weight. In HSL, the hue is 8deg with 66% saturation and 46% lightness, so this page treats it as a moderate-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-attention visual states. Its luminance is 0.1509, white text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 17.38, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text4.02:1AA Fail
White text5.23:1AA Pass

AA text options: #FFFFFF, #F5F5F5.

AAA text options: none in seed set.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #C33D28 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000004.02:1 · Fail
White text#FFFFFF5.23:1 · AA

Accessible Alternatives

#772518#FFFFFF text · best 10.18:1#772518
#28AEC3#000000 text · best 7.93:1#28AEC3
#E07767#000000 text · best 7:1#E07767
#C38A28#000000 text · best 6.99:1#C38A28
Firebrick#FFFFFF text · best 6.68:1#B22222

Generated Palette

#C33D28#C33D28
#28AEC3#28AEC3
#C32861#C32861
#C38A28#C38A28
#E07767#E07767
#772518#772518

Color Harmonies

#28AEC3#28AEC3
#C32861#C32861
#C38A28#C38A28
#28C33D#28C33D
#3D28C3#3D28C3

Variants

#E07767#E07767
#772518#772518
#DD2A0E#DD2A0E
#A94F42#A94F42
#DB998F#DB998F
#FF3414#FF3414

Nearest Named Colors

Persian Red#CC3333
Rust#B7410E
Firebrick#B22222
Poppy Red#DC343B
Vermilion#E34234

Related HEX Guides

Persian Red colorOpen the nearest named color reference for #CC3333.Rust colorOpen the nearest named color reference for #B7410E.Firebrick colorOpen the nearest named color reference for #B22222.Red color familyBrowse named red colors related to this HEX value.Warm colorsExplore colors with similar temperature behavior.Balanced colorsFind colors in the balanced 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.#C33D28 APIOpen the machine-readable JSON record for this HEX value.