Recognised as Colour

#CFE31B

#CFE31B
Yellow
Light
Nearest: Yellow

#CFE31B is a yellow with RGB values 207, 227, 27 and HSL 66°, 79%, 50%. It is a light colour, so black text on it reaches 14.7:1 contrast (AAA for normal text). The nearest named colour is Yellow.

Colour values

#CFE31B#CFE31B

HEX#CFE31B

RGBrgb(207, 227, 27)

RGB (0–1)0.8118, 0.8902, 0.1059

RGB percentages81.2%, 89%, 10.6%

HSLhsl(66, 78.7%, 49.8%)

HSV / HSBhsv(66, 88.1%, 89%)

CMYK8.8%, 0%, 88.1%, 11%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer13,624,091

CSS custom property--colour: #CFE31B;

Brightness & contrast

Relative luminance0.68283WCAG 2.x, 0 is black and 1 is white

Perceived brightness207.7 of 255ITU-R BT.601 weighting

Light or darkLight

Best text colour on this backgroundBlackcontrast 14.66:1

Contrast with white1.43:1WCAG normal text: Fail

Contrast with black14.66:1WCAG normal text: AAA

Greyscale equivalent#D0D0D0

Inverted#301CE4

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#F4D700no red cones; affects about 1% of men; ΔE 21.5 from the original

Deuteranopia#F2D935no green cones; the most common form, about 1% of men; ΔE 20.8 from the original

Tritanopia#DDD5C2no blue cones; rare, and affects men and women equally; ΔE 76.5 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text1.43:1WCAG large text: Fail

Contrast with black, large text14.66:1WCAG large text: AAA

Named colours

Yellow · ΔE 17.8 Yellow green · ΔE 20.8 Green yellow · ΔE 25.4 Gold · ΔE 26.3 Lawn green · ΔE 40.4 Chartreuse · ΔE 40.7

Nearest named CSS colourYellow (#FFFF00)ΔE 17.84, a distinctly different colour

Hue familyyellow

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#2F1BE3

Analogous#E3931B, #6BE31B

Triadic#1BCFE3, #E31BCF

Split complementary#1B6BE3, #931BE3

Tetradic#1BE393, #2F1BE3, #E31B6B

Tints, shades & saturation

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

Lighter +40%#F5F9D1

Lighter +30%#ECF4A3

Lighter +20%#E3EF75

Lighter +10%#D9E948

Darker −10%#A5B516

Darker −20%#7C8810

Darker −30%#525A0B

Darker −40%#292D05

More saturated +25%#E5FE00

Less saturated −25%#B6C33B

Channel breakdown

R207

G227

B27

Red207 (81.2%)

Green227 (89%)

Blue27 (10.6%)

Hue66°

Saturation (HSL)78.74%

Lightness49.8%

Dominant channelGreen

Hex per channelR CF · G E3 · B 1B

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Harmonies

Lighter and darker

Similar named colours

Also reads as

CFe31B (chemical formula)

Formula
1,754.016 g/mol
33 atoms

CFe31B has a molar mass of 1,754.016 g/mol, made up of 33 atoms across 3 elements: 1 × C, 31 × Fe, 1 × B.

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Molar mass

Molar mass1,754.016 g/mol

Total atoms per molecule33

Distinct elements3

Mass of one molecule2.9126121 × 10^-21 g

Molecules per gram3.4333443 × 10^20

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

C0.7%

Fe98.7%

B0.6%

Carbon (C)12.011 g/mol, 0.685%

Iron (Fe × 31)1,731.195 g/mol, 98.699%

Boron (B)10.81 g/mol, 0.616%

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