Recognised as Colour

#FF4029

#FF4029
Red
Dark
Nearest: Orange red

#FF4029 is a red with RGB values 255, 64, 41 and HSL 6°, 100%, 58%. It is a dark colour, so black text on it reaches 6:1 contrast (AA for normal text). The nearest named colour is Orange red.

Colour values

#FF4029#FF4029

HEX#FF4029

RGBrgb(255, 64, 41)

RGB (0–1)1, 0.251, 0.1608

RGB percentages100%, 25.1%, 16.1%

HSLhsl(6.4, 100%, 58%)

HSV / HSBhsv(6.4, 83.9%, 100%)

CMYK0%, 74.9%, 83.9%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,728,105

CSS custom property--colour: #FF4029;

Brightness & contrast

Relative luminance0.25087WCAG 2.x, 0 is black and 1 is white

Perceived brightness148.5 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 6.02:1

Contrast with white3.49:1WCAG normal text: Fail

Contrast with black6.02:1WCAG normal text: AA

Greyscale equivalent#676767

Inverted#00BFD6

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#7C6E23no red cones; affects about 1% of men; ΔE 75.7 from the original

Deuteranopia#AB981Cno green cones; the most common form, about 1% of men; ΔE 75.7 from the original

Tritanopia#FF003Dno blue cones; rare, and affects men and women equally; ΔE 18.2 from the original

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

Contrast with white, large text3.49:1WCAG large text: AA

Contrast with black, large text6.02:1WCAG large text: AAA

Named colours

Orange red · ΔE 12.9 Red · ΔE 15.5 Tomato · ΔE 16.3 Crimson · ΔE 24.8 Coral · ΔE 27.9 Firebrick · ΔE 29.4

Nearest named CSS colourOrange red (#FF4500)ΔE 12.9, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#29E8FF

Analogous#FF297D, #FFAB29

Triadic#29FF40, #4029FF

Split complementary#29FFAB, #297DFF

Tetradic#7DFF29, #29E8FF, #AB29FF

Tints, shades & saturation

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

Lighter +40%#FFF6F5

Lighter +30%#FFC9C2

Lighter +20%#FF9B8F

Lighter +10%#FF6E5C

Darker −10%#F51A00

Darker −20%#C21500

Darker −30%#8F0F00

Darker −40%#5C0A00

More saturated +25%#FF4029

Less saturated −25%#E45544

Channel breakdown

R255

G64

B41

Red255 (100%)

Green64 (25.1%)

Blue41 (16.1%)

Hue6.45°

Saturation (HSL)100%

Lightness58.04%

Dominant channelRed

Hex per channelR FF · G 40 · B 29

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FF4029 (chemical formula)

Formula
76,561.94 g/mol
4030 atoms

FF4029 has a molar mass of 76,561.94 g/mol, made up of 4030 atoms across 1 element: 4030 × F.

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Molar mass

Molar mass76,561.94 g/mol

Total atoms per molecule4030

Distinct elements1

Mass of one molecule1.2713409 × 10^-19 g

Molecules per gram7.8657108 × 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

F100%

Fluorine (F × 4030)76,561.94 g/mol, 100%

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Elements in this formula

Fluorine

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