Recognised as Colour

#FF4B29

#FF4B29
Red
Dark
Nearest: Orange red

#FF4B29 is a red with RGB values 255, 75, 41 and HSL 10°, 100%, 58%. It is a dark colour, so black text on it reaches 6.3:1 contrast (AA for normal text). The nearest named colour is Orange red.

Colour values

#FF4B29#FF4B29

HEX#FF4B29

RGBrgb(255, 75, 41)

RGB (0–1)1, 0.2941, 0.1608

RGB percentages100%, 29.4%, 16.1%

HSLhsl(9.5, 100%, 58%)

HSV / HSBhsv(9.5, 83.9%, 100%)

CMYK0%, 70.6%, 83.9%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,730,921

CSS custom property--colour: #FF4B29;

Brightness & contrast

Relative luminance0.26452WCAG 2.x, 0 is black and 1 is white

Perceived brightness151.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 6.29:1

Contrast with white3.34:1WCAG normal text: Fail

Contrast with black6.29:1WCAG normal text: AA

Greyscale equivalent#6F6F6F

Inverted#00B4D6

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#827322no red cones; affects about 1% of men; ΔE 71.9 from the original

Deuteranopia#AE9B1Eno green cones; the most common form, about 1% of men; ΔE 72.3 from the original

Tritanopia#FF0045no blue cones; rare, and affects men and women equally; ΔE 25.1 from the original

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

Contrast with white, large text3.34:1WCAG large text: AA

Contrast with black, large text6.29:1WCAG large text: AAA

Named colours

Orange red · ΔE 11.7 Tomato · ΔE 14.3 Red · ΔE 17.8 Coral · ΔE 24.8 Crimson · ΔE 26.8 Chocolate · ΔE 29.3

Nearest named CSS colourOrange red (#FF4500)ΔE 11.73, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#29DDFF

Analogous#FF2972, #FFB629

Triadic#29FF4B, #4B29FF

Split complementary#29FFB6, #2972FF

Tetradic#72FF29, #29DDFF, #B629FF

Tints, shades & saturation

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

Lighter +40%#FFF7F5

Lighter +30%#FFCCC2

Lighter +20%#FFA18F

Lighter +10%#FF765C

Darker −10%#F52700

Darker −20%#C21F00

Darker −30%#8F1700

Darker −40%#5C0F00

More saturated +25%#FF4B29

Less saturated −25%#E45D44

Channel breakdown

R255

G75

B41

Red255 (100%)

Green75 (29.4%)

Blue41 (16.1%)

Hue9.53°

Saturation (HSL)100%

Lightness58.04%

Dominant channelRed

Hex per channelR FF · G 4B · B 29

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FF4B29 (chemical formula)

Formula
408.48 g/mol
34 atoms

FF4B29 has a molar mass of 408.48 g/mol, made up of 34 atoms across 2 elements: 5 × F, 29 × B.

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Molar mass

Molar mass408.48 g/mol

Total atoms per molecule34

Distinct elements2

Mass of one molecule6.78297 × 10^-22 g

Molecules per gram1.4742804 × 10^21

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

F23.3%

B76.7%

Fluorine (F × 5)94.99 g/mol, 23.255%

Boron (B × 29)313.49 g/mol, 76.745%

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