Recognised as Colour

#BF1B3F

#BF1B3F
Red
Dark
Nearest: Crimson

#BF1B3F is a red with RGB values 191, 27, 63 and HSL 347°, 75%, 43%. It is a dark colour, so white text on it reaches 6.1:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#BF1B3F#BF1B3F

HEX#BF1B3F

RGBrgb(191, 27, 63)

RGB (0–1)0.749, 0.1059, 0.2471

RGB percentages74.9%, 10.6%, 24.7%

HSLhsl(346.8, 75.2%, 42.7%)

HSV / HSBhsv(346.8, 85.9%, 74.9%)

CMYK0%, 85.9%, 67%, 25.1%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,524,351

CSS custom property--colour: #BF1B3F;

Brightness & contrast

Relative luminance0.12219WCAG 2.x, 0 is black and 1 is white

Perceived brightness108.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.1:1

Contrast with white6.1:1WCAG normal text: AA

Contrast with black3.44:1WCAG normal text: Fail

Greyscale equivalent#404040

Inverted#40E4C0

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#504C3Fno red cones; affects about 1% of men; ΔE 65.8 from the original

Deuteranopia#786E3Ano green cones; the most common form, about 1% of men; ΔE 66.6 from the original

Tritanopia#D2002Cno blue cones; rare, and affects men and women equally; ΔE 17.3 from the original

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

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

Contrast with black, large text3.44:1WCAG large text: AA

Named colours

Crimson · ΔE 14.1 Brown · ΔE 15 Firebrick · ΔE 15.6 Indian red · ΔE 21.3 Dark red · ΔE 24.9 Maroon · ΔE 25.9

Nearest named CSS colourCrimson (#DC143C)ΔE 14.11, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1BBF9B

Analogous#BF1B91, #BF491B

Triadic#3FBF1B, #1B3FBF

Split complementary#1BBF49, #1B91BF

Tetradic#91BF1B, #1BBF9B, #491BBF

Tints, shades & saturation

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

Lighter +40%#F4B2C0

Lighter +30%#EE859C

Lighter +20%#E75978

Lighter +10%#E12C54

Darker −10%#921530

Darker −20%#660E22

Darker −30%#390813

Darker −40%#0C0204

More saturated +25%#DA0030

Less saturated −25%#A4364E

Channel breakdown

R191

G27

B63

Red191 (74.9%)

Green27 (10.6%)

Blue63 (24.7%)

Hue346.83°

Saturation (HSL)75.23%

Lightness42.75%

Dominant channelRed

Hex per channelR BF · G 1B · B 3F

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

Harmonies

Lighter and darker

Similar named colours

Also reads as

BF1B3F (chemical formula)

Formula
81.236 g/mol
6 atoms

BF1B3F has a molar mass of 81.236 g/mol, made up of 6 atoms across 2 elements: 4 × B, 2 × F.

Open this reading on its own page →

Molar mass

Molar mass81.236 g/mol

Total atoms per molecule6

Distinct elements2

Mass of one molecule1.3489555 × 10^-22 g

Molecules per gram7.4131429 × 10^21

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

B53.2%

F46.8%

Boron (B × 4)43.24 g/mol, 53.228%

Fluorine (F × 2)37.996 g/mol, 46.772%

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

Elements in this formula

Nerdulate something else

Nothing in mind? Surprise me · today’s page