Recognised as Colour

#FFCF19

#FFCF19
Yellow
Light
Nearest: Gold

#FFCF19 is a yellow with RGB values 255, 207, 25 and HSL 47°, 100%, 55%. It is a light colour, so black text on it reaches 14.2:1 contrast (AAA for normal text). The nearest named colour is Gold.

Colour values

#FFCF19#FFCF19

HEX#FFCF19

RGBrgb(255, 207, 25)

RGB (0–1)1, 0.8118, 0.098

RGB percentages100%, 81.2%, 9.8%

HSLhsl(47.5, 100%, 54.9%)

HSV / HSBhsv(47.5, 90.2%, 100%)

CMYK0%, 18.8%, 90.2%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,764,697

CSS custom property--colour: #FFCF19;

Brightness & contrast

Relative luminance0.65956WCAG 2.x, 0 is black and 1 is white

Perceived brightness211.3 of 255ITU-R BT.601 weighting

Light or darkLight

Best text colour on this backgroundBlackcontrast 14.19:1

Contrast with white1.48:1WCAG normal text: Fail

Contrast with black14.19:1WCAG normal text: AAA

Greyscale equivalent#CCCCCC

Inverted#0030E6

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#E8CC00no red cones; affects about 1% of men; ΔE 9.1 from the original

Deuteranopia#F4DA2Bno green cones; the most common form, about 1% of men; ΔE 10.4 from the original

Tritanopia#FFBCB1no blue cones; rare, and affects men and women equally; ΔE 70.9 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text1.48:1WCAG large text: Fail

Contrast with black, large text14.19:1WCAG large text: AAA

Named colours

Gold · ΔE 6.3 Goldenrod · ΔE 21 Orange · ΔE 24.1 Yellow · ΔE 29.2 Dark goldenrod · ΔE 33.6 Dark orange · ΔE 38.5

Nearest named CSS colourGold (#FFD700)ΔE 6.3, clearly different but related

Hue familyyellow

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1949FF

Analogous#FF5C19, #BCFF19

Triadic#19FFCF, #CF19FF

Split complementary#19BCFF, #5C19FF

Tetradic#19FF5C, #1949FF, #FF19BC

Tints, shades & saturation

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

Lighter +40%#FFFAE5

Lighter +30%#FFEFB2

Lighter +20%#FFE47F

Lighter +10%#FFDA4C

Darker −10%#E5B500

Darker −20%#B28D00

Darker −30%#7F6400

Darker −40%#4C3C00

More saturated +25%#FFCF19

Less saturated −25%#E2BE36

Channel breakdown

R255

G207

B25

Red255 (100%)

Green207 (81.2%)

Blue25 (9.8%)

Hue47.48°

Saturation (HSL)100%

Lightness54.9%

Dominant channelRed

Hex per channelR FF · G CF · B 19

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FFCF19 (chemical formula)

Formula
410.969 g/mol
22 atoms

FFCF19 has a molar mass of 410.969 g/mol, made up of 22 atoms across 2 elements: 21 × F, 1 × C.

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Molar mass

Molar mass410.969 g/mol

Total atoms per molecule22

Distinct elements2

Mass of one molecule6.8243008 × 10^-22 g

Molecules per gram1.4653516 × 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

F97.1%

C2.9%

Fluorine (F × 21)398.958 g/mol, 97.077%

Carbon (C)12.011 g/mol, 2.923%

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