Recognised as Colour

#FACF21

#FACF21
Yellow
Light
Nearest: Gold

#FACF21 is a yellow with RGB values 250, 207, 33 and HSL 48°, 96%, 55%. It is a light colour, so black text on it reaches 14:1 contrast (AAA for normal text). The nearest named colour is Gold.

Colour values

#FACF21#FACF21

HEX#FACF21

RGBrgb(250, 207, 33)

RGB (0–1)0.9804, 0.8118, 0.1294

RGB percentages98%, 81.2%, 12.9%

HSLhsl(48.1, 95.6%, 55.5%)

HSV / HSBhsv(48.1, 86.8%, 98%)

CMYK0%, 17.2%, 86.8%, 2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,437,025

CSS custom property--colour: #FACF21;

Brightness & contrast

Relative luminance0.65059WCAG 2.x, 0 is black and 1 is white

Perceived brightness209.7 of 255ITU-R BT.601 weighting

Light or darkLight

Best text colour on this backgroundBlackcontrast 14.01:1

Contrast with white1.5:1WCAG normal text: Fail

Contrast with black14.01:1WCAG normal text: AAA

Greyscale equivalent#CCCCCC

Inverted#0530DE

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#E7CC00no red cones; affects about 1% of men; ΔE 7.7 from the original

Deuteranopia#F2D831no green cones; the most common form, about 1% of men; ΔE 8.2 from the original

Tritanopia#FFBDB1no blue cones; rare, and affects men and women equally; ΔE 69.1 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text1.5:1WCAG large text: Fail

Contrast with black, large text14.01:1WCAG large text: AAA

Named colours

Gold · ΔE 7.1 Goldenrod · ΔE 20 Orange · ΔE 25.5 Yellow · ΔE 28.7 Dark goldenrod · ΔE 32.6 Khaki · ΔE 37.6

Nearest named CSS colourGold (#FFD700)ΔE 7.06, clearly different but related

Hue familyyellow

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#214CFA

Analogous#FA6321, #B9FA21

Triadic#21FACF, #CF21FA

Split complementary#21B9FA, #6321FA

Tetradic#21FA62, #214CFA, #FA21B8

Tints, shades & saturation

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

Lighter +40%#FEFAE9

Lighter +30%#FDEFB7

Lighter +20%#FCE585

Lighter +10%#FBDA53

Darker −10%#E3B705

Darker −20%#B18F04

Darker −30%#7F6703

Darker −40%#4D3E02

More saturated +25%#FFD21C

Less saturated −25%#DEBE3D

Channel breakdown

R250

G207

B33

Red250 (98%)

Green207 (81.2%)

Blue33 (12.9%)

Hue48.11°

Saturation (HSL)95.59%

Lightness55.49%

Dominant channelRed

Hex per channelR FA · G CF · B 21

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FAcF21 (chemical formula)

Formula
644.956 g/mol
23 atoms

FAcF21 has a molar mass of 644.956 g/mol, made up of 23 atoms across 2 elements: 22 × F, 1 × Ac.

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Molar mass

Molar mass644.956 g/mol

Total atoms per molecule23

Distinct elements2

Mass of one molecule1.0709746 × 10^-21 g

Molecules per gram9.3372893 × 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

F64.8%

Ac35.2%

Fluorine (F × 22)417.956 g/mol, 64.804%

Actinium (Ac)227 g/mol, 35.196%

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