Recognised as Colour

#BF2520

#BF2520
Red
Dark
Nearest: Firebrick

#BF2520 is a red with RGB values 191, 37, 32 and HSL 2°, 71%, 44%. It is a dark colour, so white text on it reaches 6:1 contrast (AA for normal text). The nearest named colour is Firebrick.

Colour values

#BF2520#BF2520

HEX#BF2520

RGBrgb(191, 37, 32)

RGB (0–1)0.749, 0.1451, 0.1255

RGB percentages74.9%, 14.5%, 12.5%

HSLhsl(1.9, 71.3%, 43.7%)

HSV / HSBhsv(1.9, 83.2%, 74.9%)

CMYK0%, 80.6%, 83.2%, 25.1%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,526,880

CSS custom property--colour: #BF2520;

Brightness & contrast

Relative luminance0.12504WCAG 2.x, 0 is black and 1 is white

Perceived brightness108.8 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6:1

Contrast with white6:1WCAG normal text: AA

Contrast with black3.5:1WCAG normal text: Fail

Greyscale equivalent#454545

Inverted#40DADF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#574E1Dno red cones; affects about 1% of men; ΔE 63.9 from the original

Deuteranopia#7D6F17no green cones; the most common form, about 1% of men; ΔE 63.5 from the original

Tritanopia#D30026no blue cones; rare, and affects men and women equally; ΔE 11.4 from the original

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

Contrast with white, large text6:1WCAG large text: AAA

Contrast with black, large text3.5:1WCAG large text: AA

Named colours

Firebrick · ΔE 6.3 Brown · ΔE 15.7 Crimson · ΔE 15.8 Dark red · ΔE 16 Maroon · ΔE 20.2 Tomato · ΔE 20.6

Nearest named CSS colourFirebrick (#B22222)ΔE 6.3, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#20BABF

Analogous#BF206A, #BF7520

Triadic#20BF25, #2520BF

Split complementary#20BF74, #206BBF

Tetradic#6ABF20, #20BABF, #7420BF

Tints, shades & saturation

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

Lighter +40%#F3BAB8

Lighter +30%#EC8F8C

Lighter +20%#E46561

Lighter +10%#DD3A35

Darker −10%#931D19

Darker −20%#681411

Darker −30%#3C0C0A

Darker −40%#100303

More saturated +25%#DB0B04

Less saturated −25%#A33F3C

Channel breakdown

R191

G37

B32

Red191 (74.9%)

Green37 (14.5%)

Blue32 (12.5%)

Hue1.89°

Saturation (HSL)71.3%

Lightness43.73%

Dominant channelRed

Hex per channelR BF · G 25 · B 20

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Harmonies

Lighter and darker

Similar named colours

Also reads as

BF2520 (chemical formula)

Formula
47,885.77 g/mol
2521 atoms

BF2520 has a molar mass of 47,885.77 g/mol, made up of 2521 atoms across 2 elements: 1 × B, 2520 × F.

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Molar mass

Molar mass47,885.77 g/mol

Total atoms per molecule2521

Distinct elements2

Mass of one molecule7.9516192 × 10^-20 g

Molecules per gram1.2576055 × 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

B0%

F100%

Boron (B)10.81 g/mol, 0.023%

Fluorine (F × 2520)47,874.96 g/mol, 99.977%

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