Recognised as Colour

#BC151F

#BC151F
Red
Dark
Nearest: Firebrick

#BC151F is a red with RGB values 188, 21, 31 and HSL 356°, 80%, 41%. It is a dark colour, so white text on it reaches 6.4:1 contrast (AA for normal text). The nearest named colour is Firebrick.

Colour values

#BC151F#BC151F

HEX#BC151F

RGBrgb(188, 21, 31)

RGB (0–1)0.7373, 0.0824, 0.1216

RGB percentages73.7%, 8.2%, 12.2%

HSLhsl(356.4, 79.9%, 41%)

HSV / HSBhsv(356.4, 88.8%, 73.7%)

CMYK0%, 88.8%, 83.5%, 26.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,326,175

CSS custom property--colour: #BC151F;

Brightness & contrast

Relative luminance0.11327WCAG 2.x, 0 is black and 1 is white

Perceived brightness104.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.43:1

Contrast with white6.43:1WCAG normal text: AA

Contrast with black3.27:1WCAG normal text: Fail

Greyscale equivalent#393939

Inverted#43EAE0

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#51481Dno red cones; affects about 1% of men; ΔE 66.2 from the original

Deuteranopia#786B15no green cones; the most common form, about 1% of men; ΔE 66.5 from the original

Tritanopia#D0001Cno blue cones; rare, and affects men and women equally; ΔE 10.2 from the original

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

Contrast with white, large text6.43:1WCAG large text: AAA

Contrast with black, large text3.27:1WCAG large text: AA

Named colours

Firebrick · ΔE 6.6 Crimson · ΔE 13.8 Dark red · ΔE 16 Brown · ΔE 16 Maroon · ΔE 20.1 Tomato · ΔE 23

Nearest named CSS colourFirebrick (#B22222)ΔE 6.63, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#15BCB2

Analogous#BC1572, #BC5F15

Triadic#1FBC15, #151FBC

Split complementary#15BC5F, #1572BC

Tetradic#72BC15, #15BCB2, #5F15BC

Tints, shades & saturation

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

Lighter +40%#F5A8AC

Lighter +30%#F07A81

Lighter +20%#EB4C56

Lighter +10%#E61E2A

Darker −10%#8E1017

Darker −20%#600B10

Darker −30%#320608

Darker −40%#040101

More saturated +25%#D1000D

Less saturated −25%#A22F36

Channel breakdown

R188

G21

B31

Red188 (73.7%)

Green21 (8.2%)

Blue31 (12.2%)

Hue356.41°

Saturation (HSL)79.9%

Lightness40.98%

Dominant channelRed

Hex per channelR BC · G 15 · B 1F

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Harmonies

Lighter and darker

Similar named colours

Also reads as

BC151F (chemical formula)

Formula
1,843.469 g/mol
153 atoms

BC151F has a molar mass of 1,843.469 g/mol, made up of 153 atoms across 3 elements: 1 × B, 151 × C, 1 × F.

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Molar mass

Molar mass1,843.469 g/mol

Total atoms per molecule153

Distinct elements3

Mass of one molecule3.0611523 × 10^-21 g

Molecules per gram3.2667437 × 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

B0.6%

C98.4%

F1%

Boron (B)10.81 g/mol, 0.586%

Carbon (C × 151)1,813.661 g/mol, 98.383%

Fluorine (F)18.998 g/mol, 1.031%

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