Recognised as Colour

#FB473C

#FB473C
Red
Dark
Nearest: Tomato

#FB473C is a red with RGB values 251, 71, 60 and HSL 3°, 96%, 61%. It is a dark colour, so black text on it reaches 6.1:1 contrast (AA for normal text). The nearest named colour is Tomato.

Colour values

#FB473C#FB473C

HEX#FB473C

RGBrgb(251, 71, 60)

RGB (0–1)0.9843, 0.2784, 0.2353

RGB percentages98.4%, 27.8%, 23.5%

HSLhsl(3.5, 96%, 61%)

HSV / HSBhsv(3.5, 76.1%, 98.4%)

CMYK0%, 71.7%, 76.1%, 1.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,467,772

CSS custom property--colour: #FB473C;

Brightness & contrast

Relative luminance0.25342WCAG 2.x, 0 is black and 1 is white

Perceived brightness149 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 6.07:1

Contrast with white3.46:1WCAG normal text: Fail

Contrast with black6.07:1WCAG normal text: AA

Greyscale equivalent#6C6C6C

Inverted#04B8C3

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#7D7139no red cones; affects about 1% of men; ΔE 72.3 from the original

Deuteranopia#A99835no green cones; the most common form, about 1% of men; ΔE 72.7 from the original

Tritanopia#FF0046no blue cones; rare, and affects men and women equally; ΔE 17.7 from the original

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

Contrast with white, large text3.46:1WCAG large text: AA

Contrast with black, large text6.07:1WCAG large text: AAA

Named colours

Tomato · ΔE 10.3 Crimson · ΔE 17.2 Orange red · ΔE 22.2 Firebrick · ΔE 23.3 Coral · ΔE 23.8 Red · ΔE 24.6

Nearest named CSS colourTomato (#FF6347)ΔE 10.31, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#3CF0FB

Analogous#FB3C91, #FBA63C

Triadic#3CFB47, #473CFB

Split complementary#3CFBA6, #3C91FB

Tetradic#91FB3C, #3CF0FB, #A63CFB

Tints, shades & saturation

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

Lighter +40%#FFFFFF

Lighter +30%#FED4D2

Lighter +20%#FDA5A0

Lighter +10%#FC766E

Darker −10%#FA180A

Darker −20%#CD1004

Darker −30%#9B0C03

Darker −40%#690802

More saturated +25%#FF4338

Less saturated −25%#E25D55

Channel breakdown

R251

G71

B60

Red251 (98.4%)

Green71 (27.8%)

Blue60 (23.5%)

Hue3.46°

Saturation (HSL)95.98%

Lightness60.98%

Dominant channelRed

Hex per channelR FB · G 47 · B 3C

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FB473C (chemical formula)

Formula
5,144.139 g/mol
475 atoms

FB473C has a molar mass of 5,144.139 g/mol, made up of 475 atoms across 3 elements: 1 × F, 473 × B, 1 × C.

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Molar mass

Molar mass5,144.139 g/mol

Total atoms per molecule475

Distinct elements3

Mass of one molecule8.5420438 × 10^-21 g

Molecules per gram1.17068 × 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

F0.4%

B99.4%

C0.2%

Fluorine (F)18.998 g/mol, 0.369%

Boron (B × 473)5,113.13 g/mol, 99.397%

Carbon (C)12.011 g/mol, 0.233%

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