Recognised as Colour

#FFBF57

#FFBF57
Orange
Light
Nearest: Goldenrod

#FFBF57 is a orange with RGB values 255, 191, 87 and HSL 37°, 100%, 67%. It is a light colour, so black text on it reaches 12.8:1 contrast (AAA for normal text). The nearest named colour is Goldenrod.

Colour values

#FFBF57#FFBF57

HEX#FFBF57

RGBrgb(255, 191, 87)

RGB (0–1)1, 0.749, 0.3412

RGB percentages100%, 74.9%, 34.1%

HSLhsl(37.1, 100%, 67.1%)

HSV / HSBhsv(37.1, 65.9%, 100%)

CMYK0%, 25.1%, 65.9%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,760,663

CSS custom property--colour: #FFBF57;

Brightness & contrast

Relative luminance0.5921WCAG 2.x, 0 is black and 1 is white

Perceived brightness204.3 of 255ITU-R BT.601 weighting

Light or darkLight

Best text colour on this backgroundBlackcontrast 12.84:1

Contrast with white1.64:1WCAG normal text: Fail

Contrast with black12.84:1WCAG normal text: AAA

Greyscale equivalent#C5C5C5

Inverted#0040A8

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#D7C14Cno red cones; affects about 1% of men; ΔE 18.8 from the original

Deuteranopia#E6D15Ano green cones; the most common form, about 1% of men; ΔE 19.6 from the original

Tritanopia#FFAEA8no blue cones; rare, and affects men and women equally; ΔE 47.6 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text1.64:1WCAG large text: Fail

Contrast with black, large text12.84:1WCAG large text: AAA

Named colours

Goldenrod · ΔE 14.5 Sandy brown · ΔE 18.2 Dark goldenrod · ΔE 22.6 Orange · ΔE 23 Peru · ΔE 24.5 Khaki · ΔE 27.9

Nearest named CSS colourGoldenrod (#DAA520)ΔE 14.5, a distinctly different colour

Hue familyorange

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#5797FF

Analogous#FF6B57, #EBFF57

Triadic#57FFBF, #BF57FF

Split complementary#57EBFF, #6B57FF

Tetradic#57FF6B, #5797FF, #FF57EB

Tints, shades & saturation

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

Lighter +40%#FFFFFF

Lighter +30%#FFF9F0

Lighter +20%#FFE6BD

Lighter +10%#FFD28A

Darker −10%#FFAC24

Darker −20%#F09500

Darker −30%#BD7500

Darker −40%#8A5500

More saturated +25%#FFBF57

Less saturated −25%#EABA6C

Channel breakdown

R255

G191

B87

Red255 (100%)

Green191 (74.9%)

Blue87 (34.1%)

Hue37.14°

Saturation (HSL)100%

Lightness67.06%

Dominant channelRed

Hex per channelR FF · G BF · B 57

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FFBF57 (chemical formula)

Formula
1,131.692 g/mol
60 atoms

FFBF57 has a molar mass of 1,131.692 g/mol, made up of 60 atoms across 2 elements: 59 × F, 1 × B.

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Molar mass

Molar mass1,131.692 g/mol

Total atoms per molecule60

Distinct elements2

Mass of one molecule1.8792188 × 10^-21 g

Molecules per gram5.3213602 × 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

F99%

B1%

Fluorine (F × 59)1,120.882 g/mol, 99.045%

Boron (B)10.81 g/mol, 0.955%

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