Recognised as Colour

#CFEF1B

#CFEF1B
Yellow
Light
Nearest: Yellow

#CFEF1B is a yellow with RGB values 207, 239, 27 and HSL 69°, 87%, 52%. It is a light colour, so black text on it reaches 16:1 contrast (AAA for normal text). The nearest named colour is Yellow.

Colour values

#CFEF1B#CFEF1B

HEX#CFEF1B

RGBrgb(207, 239, 27)

RGB (0–1)0.8118, 0.9373, 0.1059

RGB percentages81.2%, 93.7%, 10.6%

HSLhsl(69.1, 86.9%, 52.2%)

HSV / HSBhsv(69.1, 88.7%, 93.7%)

CMYK13.4%, 0%, 88.7%, 6.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer13,627,163

CSS custom property--colour: #CFEF1B;

Brightness & contrast

Relative luminance0.75078WCAG 2.x, 0 is black and 1 is white

Perceived brightness215.5 of 255ITU-R BT.601 weighting

Light or darkLight

Best text colour on this backgroundBlackcontrast 16.02:1

Contrast with white1.31:1WCAG normal text: Fail

Contrast with black16.02:1WCAG normal text: AAA

Greyscale equivalent#D9D9D9

Inverted#3010E4

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#FFE100no red cones; affects about 1% of men; ΔE 26.7 from the original

Deuteranopia#FCE139no green cones; the most common form, about 1% of men; ΔE 26.7 from the original

Tritanopia#DCE1CCno blue cones; rare, and affects men and women equally; ΔE 79.8 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text1.31:1WCAG large text: Fail

Contrast with black, large text16.02:1WCAG large text: AAA

Named colours

Yellow · ΔE 17.2 Green yellow · ΔE 19.5 Yellow green · ΔE 22.6 Gold · ΔE 31.6 Lawn green · ΔE 34.6 Chartreuse · ΔE 34.8

Nearest named CSS colourYellow (#FFFF00)ΔE 17.24, a distinctly different colour

Hue familyyellow

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#3B1BEF

Analogous#EFA51B, #65EF1B

Triadic#1BCFEF, #EF1BCF

Split complementary#1B65EF, #A51BEF

Tetradic#1BEFA5, #3B1BEF, #EF1B65

Tints, shades & saturation

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

Lighter +40%#F7FCDA

Lighter +30%#EDF9AA

Lighter +20%#E3F67A

Lighter +10%#D9F24B

Darker −10%#ADC90E

Darker −20%#84990B

Darker −30%#5B6A07

Darker −40%#323A04

More saturated +25%#DAFF0B

Less saturated −25%#BAD13A

Channel breakdown

R207

G239

B27

Red207 (81.2%)

Green239 (93.7%)

Blue27 (10.6%)

Hue69.06°

Saturation (HSL)86.89%

Lightness52.16%

Dominant channelGreen

Hex per channelR CF · G EF · B 1B

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Harmonies

Lighter and darker

Similar named colours

Also reads as

CFeF1B (chemical formula)

Formula
97.664 g/mol
4 atoms

CFeF1B has a molar mass of 97.664 g/mol, made up of 4 atoms across 4 elements: 1 × C, 1 × Fe, 1 × F, 1 × B.

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Molar mass

Molar mass97.664 g/mol

Total atoms per molecule4

Distinct elements4

Mass of one molecule1.6217489 × 10^-22 g

Molecules per gram6.1661828 × 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

C12.3%

Fe57.2%

F19.5%

B11.1%

Carbon (C)12.011 g/mol, 12.298%

Iron (Fe)55.845 g/mol, 57.181%

Fluorine (F)18.998 g/mol, 19.452%

Boron (B)10.81 g/mol, 11.069%

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