Recognised as Colour

#F61900

#F61900
Red
Dark
Nearest: Red

#F61900 is a red with RGB values 246, 25, 0 and HSL 6°, 100%, 48%. It is a dark colour, so black text on it reaches 5.1:1 contrast (AA for normal text). The nearest named colour is Red.

Colour values

#F61900#F61900

HEX#F61900

RGBrgb(246, 25, 0)

RGB (0–1)0.9647, 0.098, 0

RGB percentages96.5%, 9.8%, 0%

HSLhsl(6.1, 100%, 48.2%)

HSV / HSBhsv(6.1, 100%, 96.5%)

CMYK0%, 89.8%, 100%, 3.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,128,256

CSS custom property--colour: #F61900;

Brightness & contrast

Relative luminance0.20288WCAG 2.x, 0 is black and 1 is white

Perceived brightness135.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.06:1

Contrast with white4.15:1WCAG normal text: Fail

Contrast with black5.06:1WCAG normal text: AA

Greyscale equivalent#464646

Inverted#09E6FF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6C5E00no red cones; affects about 1% of men; ΔE 82.2 from the original

Deuteranopia#9F8D00no green cones; the most common form, about 1% of men; ΔE 81.5 from the original

Tritanopia#FF001Bno blue cones; rare, and affects men and women equally; ΔE 8 from the original

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

Contrast with white, large text4.15:1WCAG large text: AA

Contrast with black, large text5.06:1WCAG large text: AAA

Named colours

Red · ΔE 4.8 Orange red · ΔE 10.1 Tomato · ΔE 28.1 Crimson · ΔE 32.8 Firebrick · ΔE 36.7 Coral · ΔE 38.4

Nearest named CSS colourRed (#FF0000)ΔE 4.8, a close match

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#00DDF6

Analogous#F60062, #F69400

Triadic#00F619, #1900F6

Split complementary#00F694, #0062F6

Tetradic#62F600, #00DDF6, #9400F6

Tints, shades & saturation

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

Lighter +40%#FFC9C3

Lighter +30%#FF9B90

Lighter +20%#FF6D5D

Lighter +10%#FF402A

Darker −10%#C31400

Darker −20%#900F00

Darker −30%#5D0900

Darker −40%#2A0400

More saturated +25%#F61900

Less saturated −25%#D7321F

Channel breakdown

R246

G25

Red246 (96.5%)

Green25 (9.8%)

Blue0 (0%)

Hue6.1°

Saturation (HSL)100%

Lightness48.24%

Dominant channelRed

Hex per channelR F6 · G 19 · B 00

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Harmonies

Lighter and darker

Similar named colours

Also reads as

F61900 (chemical formula)

Formula
1,175,976.2 g/mol
61900 atoms

F61900 has a molar mass of 1,175,976.2 g/mol, made up of 61900 atoms across 1 element: 61900 × F.

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Molar mass

Molar mass1,175,976.2 g/mol

Total atoms per molecule61900

Distinct elements1

Mass of one molecule1.9527544 × 10^-18 g

Molecules per gram5.1209716 × 10^17

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 × 61900)1,175,976.2 g/mol, 100%

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Elements in this formula

Fluorine

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