Recognised as Colour

#FB2020

#FB2020
Red
Dark
Nearest: Red

#FB2020 is a red with RGB values 251, 32, 32 and HSL 0°, 96%, 55%. It is a dark colour, so black text on it reaches 5.3:1 contrast (AA for normal text). The nearest named colour is Red.

Colour values

#FB2020#FB2020

HEX#FB2020

RGBrgb(251, 32, 32)

RGB (0–1)0.9843, 0.1255, 0.1255

RGB percentages98.4%, 12.5%, 12.5%

HSLhsl(0, 96.5%, 55.5%)

HSV / HSBhsv(0, 87.3%, 98.4%)

CMYK0%, 87.3%, 87.3%, 1.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,457,760

CSS custom property--colour: #FB2020;

Brightness & contrast

Relative luminance0.21647WCAG 2.x, 0 is black and 1 is white

Perceived brightness139.8 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.33:1

Contrast with white3.94:1WCAG normal text: Fail

Contrast with black5.33:1WCAG normal text: AA

Greyscale equivalent#4F4F4F

Inverted#04DFDF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6F621Bno red cones; affects about 1% of men; ΔE 82.3 from the original

Deuteranopia#A2900Bno green cones; the most common form, about 1% of men; ΔE 82.2 from the original

Tritanopia#FF0026no blue cones; rare, and affects men and women equally; ΔE 5 from the original

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

Contrast with white, large text3.94:1WCAG large text: AA

Contrast with black, large text5.33:1WCAG large text: AAA

Named colours

Red · ΔE 10.9 Orange red · ΔE 15.1 Tomato · ΔE 22.9 Crimson · ΔE 24.9 Firebrick · ΔE 31.6 Coral · ΔE 35.1

Nearest named CSS colourRed (#FF0000)ΔE 10.87, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#20FBFB

Analogous#FB208E, #FB8E20

Triadic#20FB20, #2020FB

Split complementary#20FB8E, #208EFB

Tetradic#8EFB20, #20FBFB, #8E20FB

Tints, shades & saturation

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

Lighter +40%#FFE8E8

Lighter +30%#FEB6B6

Lighter +20%#FD8484

Lighter +10%#FC5252

Darker −10%#E40404

Darker −20%#B20303

Darker −30%#800202

Darker −40%#4E0101

More saturated +25%#FF1C1C

Less saturated −25%#DF3C3C

Channel breakdown

R251

G32

B32

Red251 (98.4%)

Green32 (12.5%)

Blue32 (12.5%)

Hue0°

Saturation (HSL)96.48%

Lightness55.49%

Dominant channelRed

Hex per channelR FB · G 20 · B 20

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FB2020 (chemical formula)

Formula
21,855.198 g/mol
2021 atoms

FB2020 has a molar mass of 21,855.198 g/mol, made up of 2021 atoms across 2 elements: 1 × F, 2020 × B.

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Molar mass

Molar mass21,855.198 g/mol

Total atoms per molecule2021

Distinct elements2

Mass of one molecule3.629141 × 10^-20 g

Molecules per gram2.755473 × 10^19

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

F0.1%

B99.9%

Fluorine (F)18.998 g/mol, 0.087%

Boron (B × 2020)21,836.2 g/mol, 99.913%

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Elements in this formula

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