Recognised as Colour

#FF1508

#FF1508
Red
Dark
Nearest: Red

#FF1508 is a red with RGB values 255, 21, 8 and HSL 3°, 100%, 52%. It is a dark colour, so black text on it reaches 5.4:1 contrast (AA for normal text). The nearest named colour is Red.

Colour values

#FF1508#FF1508

HEX#FF1508

RGBrgb(255, 21, 8)

RGB (0–1)1, 0.0824, 0.0314

RGB percentages100%, 8.2%, 3.1%

HSLhsl(3.2, 100%, 51.6%)

HSV / HSBhsv(3.2, 96.9%, 100%)

CMYK0%, 91.8%, 96.9%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,717,064

CSS custom property--colour: #FF1508;

Brightness & contrast

Relative luminance0.21814WCAG 2.x, 0 is black and 1 is white

Perceived brightness140.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.36:1

Contrast with white3.92:1WCAG normal text: Fail

Contrast with black5.36:1WCAG normal text: AA

Greyscale equivalent#464646

Inverted#00EAF7

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6F6100no red cones; affects about 1% of men; ΔE 85 from the original

Deuteranopia#A49100no green cones; the most common form, about 1% of men; ΔE 84.2 from the original

Tritanopia#FF001Bno blue cones; rare, and affects men and women equally; ΔE 6.5 from the original

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

Contrast with white, large text3.92:1WCAG large text: AA

Contrast with black, large text5.36:1WCAG large text: AAA

Named colours

Red · ΔE 2.4 Orange red · ΔE 11.8 Tomato · ΔE 29.3 Crimson · ΔE 33.5 Firebrick · ΔE 38.7 Coral · ΔE 40

Nearest named CSS colourRed (#FF0000)ΔE 2.43, a close match

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#08F2FF

Analogous#FF0877, #FF9008

Triadic#08FF15, #1508FF

Split complementary#08FF90, #0877FF

Tetradic#77FF08, #08F2FF, #9008FF

Tints, shades & saturation

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

Lighter +40%#FFD6D4

Lighter +30%#FFA6A1

Lighter +20%#FF766E

Lighter +10%#FF453B

Darker −10%#D40B00

Darker −20%#A10800

Darker −30%#6E0600

Darker −40%#3B0300

More saturated +25%#FF1508

Less saturated −25%#E03127

Channel breakdown

R255

G21

Red255 (100%)

Green21 (8.2%)

Blue8 (3.1%)

Hue3.16°

Saturation (HSL)100%

Lightness51.57%

Dominant channelRed

Hex per channelR FF · G 15 · B 08

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FF1508 (chemical formula)

Formula
28,667.982 g/mol
1509 atoms

FF1508 has a molar mass of 28,667.982 g/mol, made up of 1509 atoms across 1 element: 1509 × F.

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Molar mass

Molar mass28,667.982 g/mol

Total atoms per molecule1509

Distinct elements1

Mass of one molecule4.7604304 × 10^-20 g

Molecules per gram2.1006504 × 10^19

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 × 1509)28,667.982 g/mol, 100%

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Elements in this formula

Fluorine

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