Recognised as Colour

#B10024

#B10024
Red
Dark
Nearest: Firebrick

#B10024 is a red with RGB values 177, 0, 36 and HSL 348°, 100%, 35%. It is a dark colour, so white text on it reaches 7.3:1 contrast (AAA for normal text). The nearest named colour is Firebrick.

Colour values

#B10024#B10024

HEX#B10024

RGBrgb(177, 0, 36)

RGB (0–1)0.6941, 0, 0.1412

RGB percentages69.4%, 0%, 14.1%

HSLhsl(347.8, 100%, 34.7%)

HSV / HSBhsv(347.8, 100%, 69.4%)

CMYK0%, 100%, 79.7%, 30.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,599,908

CSS custom property--colour: #B10024;

Brightness & contrast

Relative luminance0.09474WCAG 2.x, 0 is black and 1 is white

Perceived brightness97.5 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 7.25:1

Contrast with white7.25:1WCAG normal text: AAA

Contrast with black2.89:1WCAG normal text: Fail

Greyscale equivalent#282828

Inverted#4EFFDB

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#474123no red cones; affects about 1% of men; ΔE 66.4 from the original

Deuteranopia#6F631Cno green cones; the most common form, about 1% of men; ΔE 65.9 from the original

Tritanopia#C30015no blue cones; rare, and affects men and women equally; ΔE 14.1 from the original

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

Contrast with white, large text7.25:1WCAG large text: AAA

Contrast with black, large text2.89:1WCAG large text: Fail

Named colours

Firebrick · ΔE 7 Brown · ΔE 12.4 Crimson · ΔE 13.8 Dark red · ΔE 15.5 Maroon · ΔE 18.1 Indian red · ΔE 26.4

Nearest named CSS colourFirebrick (#B22222)ΔE 7, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#00B18D

Analogous#B1007D, #B13500

Triadic#24B100, #0024B1

Split complementary#00B135, #007DB1

Tetradic#7CB100, #00B18D, #3400B1

Tints, shades & saturation

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

Lighter +40%#FF7E98

Lighter +30%#FF4B70

Lighter +20%#FF1847

Lighter +10%#E4002E

Darker −10%#7E001A

Darker −20%#4B000F

Darker −30%#180005

Darker −40%#000000

More saturated +25%#B10024

Less saturated −25%#9B1631

Channel breakdown

R177

B36

Red177 (69.4%)

Green0 (0%)

Blue36 (14.1%)

Hue347.8°

Saturation (HSL)100%

Lightness34.71%

Dominant channelRed

Hex per channelR B1 · G 00 · B 24

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

B10024 (chemical formula)

Formula
108,359.44 g/mol
10024 atoms

B10024 has a molar mass of 108,359.44 g/mol, made up of 10024 atoms across 1 element: 10024 × B.

Open this reading on its own page →

Molar mass

Molar mass108,359.44 g/mol

Total atoms per molecule10024

Distinct elements1

Mass of one molecule1.7993508 × 10^-19 g

Molecules per gram5.5575599 × 10^18

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

B100%

Boron (B × 10024)108,359.44 g/mol, 100%

Keep nerding

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

Elements in this formula

Boron

Nerdulate something else

Nothing in mind? Surprise me · today’s page