Recognised as Colour

#FB7573

#FB7573
Red
Dark
Nearest: Salmon

#FB7573 is a red with RGB values 251, 117, 115 and HSL 1°, 94%, 72%. It is a dark colour, so black text on it reaches 7.9:1 contrast (AAA for normal text). The nearest named colour is Salmon.

Colour values

#FB7573#FB7573

HEX#FB7573

RGBrgb(251, 117, 115)

RGB (0–1)0.9843, 0.4588, 0.451

RGB percentages98.4%, 45.9%, 45.1%

HSLhsl(0.9, 94.4%, 71.8%)

HSV / HSBhsv(0.9, 54.2%, 98.4%)

CMYK0%, 53.4%, 54.2%, 1.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,479,603

CSS custom property--colour: #FB7573;

Brightness & contrast

Relative luminance0.3447WCAG 2.x, 0 is black and 1 is white

Perceived brightness168.5 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 7.89:1

Contrast with white2.66:1WCAG normal text: Fail

Contrast with black7.89:1WCAG normal text: AAA

Greyscale equivalent#919191

Inverted#048A8C

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#958D72no red cones; affects about 1% of men; ΔE 54.1 from the original

Deuteranopia#B6A970no green cones; the most common form, about 1% of men; ΔE 55.1 from the original

Tritanopia#FF5F76no blue cones; rare, and affects men and women equally; ΔE 13 from the original

Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning

Contrast with white, large text2.66:1WCAG large text: Fail

Contrast with black, large text7.89:1WCAG large text: AAA

Named colours

Salmon · ΔE 6.8 Light coral · ΔE 10.5 Indian red · ΔE 14 Tomato · ΔE 21.7 Coral · ΔE 22.3 Light salmon · ΔE 23.3

Nearest named CSS colourSalmon (#FA8072)ΔE 6.8, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#73F9FB

Analogous#FB73B5, #FBB973

Triadic#73FB75, #7573FB

Split complementary#73FBB9, #73B5FB

Tetradic#B5FB73, #73F9FB, #B973FB

Tints, shades & saturation

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

Lighter +40%#FFFFFF

Lighter +30%#FFFFFF

Lighter +20%#FED7D6

Lighter +10%#FCA6A5

Darker −10%#FA4441

Darker −20%#F81310

Darker −30%#CF0906

Darker −40%#9D0705

More saturated +25%#FF716F

Less saturated −25%#E98685

Channel breakdown

R251

G117

B115

Red251 (98.4%)

Green117 (45.9%)

Blue115 (45.1%)

Hue0.88°

Saturation (HSL)94.44%

Lightness71.76%

Dominant channelRed

Hex per channelR FB · G 75 · B 73

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FB7573 (chemical formula)

Formula
81,883.128 g/mol
7574 atoms

FB7573 has a molar mass of 81,883.128 g/mol, made up of 7574 atoms across 2 elements: 1 × F, 7573 × B.

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Molar mass

Molar mass81,883.128 g/mol

Total atoms per molecule7574

Distinct elements2

Mass of one molecule1.3597013 × 10^-19 g

Molecules per gram7.3545563 × 10^18

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

F0%

B100%

Fluorine (F)18.998 g/mol, 0.023%

Boron (B × 7573)81,864.13 g/mol, 99.977%

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