Recognised as Colour

#BC401B

#BC401B
Red
Dark
Nearest: Firebrick

#BC401B is a red with RGB values 188, 64, 27 and HSL 14°, 75%, 42%. It is a dark colour, so white text on it reaches 5.4:1 contrast (AA for normal text). The nearest named colour is Firebrick.

Colour values

#BC401B#BC401B

HEX#BC401B

RGBrgb(188, 64, 27)

RGB (0–1)0.7373, 0.251, 0.1059

RGB percentages73.7%, 25.1%, 10.6%

HSLhsl(13.8, 74.9%, 42.2%)

HSV / HSBhsv(13.8, 85.6%, 73.7%)

CMYK0%, 66%, 85.6%, 26.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,337,179

CSS custom property--colour: #BC401B;

Brightness & contrast

Relative luminance0.14437WCAG 2.x, 0 is black and 1 is white

Perceived brightness114.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.4:1

Contrast with white5.4:1WCAG normal text: AA

Contrast with black3.89:1WCAG normal text: Fail

Greyscale equivalent#585858

Inverted#43BFE4

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#645914no red cones; affects about 1% of men; ΔE 53.2 from the original

Deuteranopia#837414no green cones; the most common form, about 1% of men; ΔE 52.9 from the original

Tritanopia#CF1939no blue cones; rare, and affects men and women equally; ΔE 24 from the original

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

Contrast with white, large text5.4:1WCAG large text: AAA

Contrast with black, large text3.89:1WCAG large text: AA

Named colours

Firebrick · ΔE 13.5 Dark red · ΔE 18 Brown · ΔE 18.2 Chocolate · ΔE 18.5 Tomato · ΔE 19.9 Maroon · ΔE 21.4

Nearest named CSS colourFirebrick (#B22222)ΔE 13.5, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1B97BC

Analogous#BC1B47, #BC911B

Triadic#1BBC40, #401BBC

Split complementary#1BBC91, #1B46BC

Tetradic#46BC1B, #1B97BC, #911BBC

Tints, shades & saturation

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

Lighter +40%#F4BFAF

Lighter +30%#ED9B83

Lighter +20%#E77756

Lighter +10%#E0542A

Darker −10%#8F3115

Darker −20%#63220E

Darker −30%#361208

Darker −40%#0A0301

More saturated +25%#D73100

Less saturated −25%#A14F36

Channel breakdown

R188

G64

B27

Red188 (73.7%)

Green64 (25.1%)

Blue27 (10.6%)

Hue13.79°

Saturation (HSL)74.88%

Lightness42.16%

Dominant channelRed

Hex per channelR BC · G 40 · B 1B

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Harmonies

Lighter and darker

Similar named colours

Also reads as

BC401B (chemical formula)

Formula
4,838.031 g/mol
403 atoms

BC401B has a molar mass of 4,838.031 g/mol, made up of 403 atoms across 2 elements: 2 × B, 401 × C.

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Molar mass

Molar mass4,838.031 g/mol

Total atoms per molecule403

Distinct elements2

Mass of one molecule8.0337395 × 10^-21 g

Molecules per gram1.2447503 × 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

B0.4%

C99.6%

Boron (B × 2)21.62 g/mol, 0.447%

Carbon (C × 401)4,816.411 g/mol, 99.553%

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Elements in this formula

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