Recognised as Colour

#C42401

#C42401
Red
Dark
Nearest: Firebrick

#C42401 is a red with RGB values 196, 36, 1 and HSL 11°, 99%, 39%. It is a dark colour, so white text on it reaches 5.8:1 contrast (AA for normal text). The nearest named colour is Firebrick.

Colour values

#C42401#C42401

HEX#C42401

RGBrgb(196, 36, 1)

RGB (0–1)0.7686, 0.1412, 0.0039

RGB percentages76.9%, 14.1%, 0.4%

HSLhsl(10.8, 99%, 38.6%)

HSV / HSBhsv(10.8, 99.5%, 76.9%)

CMYK0%, 81.6%, 99.5%, 23.1%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,854,273

CSS custom property--colour: #C42401;

Brightness & contrast

Relative luminance0.13WCAG 2.x, 0 is black and 1 is white

Perceived brightness110.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.83:1

Contrast with white5.83:1WCAG normal text: AA

Contrast with black3.6:1WCAG normal text: Fail

Greyscale equivalent#434343

Inverted#3BDBFE

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#5A4E00no red cones; affects about 1% of men; ΔE 65.3 from the original

Deuteranopia#817100no green cones; the most common form, about 1% of men; ΔE 64.5 from the original

Tritanopia#D90021no blue cones; rare, and affects men and women equally; ΔE 14.4 from the original

Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning

Contrast with white, large text5.83:1WCAG large text: AAA

Contrast with black, large text3.6:1WCAG large text: AA

Named colours

Firebrick · ΔE 18.7 Orange red · ΔE 21.4 Tomato · ΔE 21.6 Dark red · ΔE 22.4 Crimson · ΔE 24.8 Red · ΔE 25.4

Nearest named CSS colourFirebrick (#B22222)ΔE 18.73, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#01A1C4

Analogous#C4013F, #C48601

Triadic#01C424, #2401C4

Split complementary#01C485, #0140C4

Tetradic#40C401, #01A1C4, #8501C4

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#FEA693

Lighter +30%#FE7C60

Lighter +20%#FE532D

Lighter +10%#F72D01

Darker −10%#911B01

Darker −20%#5F1100

Darker −30%#2C0800

Darker −40%#000000

More saturated +25%#C52300

Less saturated −25%#AB341A

Channel breakdown

R196

G36

Red196 (76.9%)

Green36 (14.1%)

Blue1 (0.4%)

Hue10.77°

Saturation (HSL)98.98%

Lightness38.63%

Dominant channelRed

Hex per channelR C4 · G 24 · B 01

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Harmonies

Lighter and darker

Similar named colours

Also reads as

C42401 (chemical formula)

Formula
509,278.411 g/mol
42401 atoms

C42401 has a molar mass of 509,278.411 g/mol, made up of 42401 atoms across 1 element: 42401 × C.

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Molar mass

Molar mass509,278.411 g/mol

Total atoms per molecule42401

Distinct elements1

Mass of one molecule8.456767 × 10^-19 g

Molecules per gram1.182485 × 10^18

Name

NameNot in the name tablea name cannot be worked out from a formula alone: isomers share formulas, and naming depends on bonding the formula does not show

Composition by mass

C100%

Carbon (C × 42401)509,278.411 g/mol, 100%

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Elements in this formula

Carbon

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