Recognised as Colour

#FF242B

#FF242B
Red
Dark
Nearest: Red

#FF242B is a red with RGB values 255, 36, 43 and HSL 358°, 100%, 57%. It is a dark colour, so black text on it reaches 5.5:1 contrast (AA for normal text). The nearest named colour is Red.

Colour values

#FF242B#FF242B

HEX#FF242B

RGBrgb(255, 36, 43)

RGB (0–1)1, 0.1412, 0.1686

RGB percentages100%, 14.1%, 16.9%

HSLhsl(358.1, 100%, 57.1%)

HSV / HSBhsv(358.1, 85.9%, 100%)

CMYK0%, 85.9%, 83.1%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,720,939

CSS custom property--colour: #FF242B;

Brightness & contrast

Relative luminance0.22696WCAG 2.x, 0 is black and 1 is white

Perceived brightness142.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.54:1

Contrast with white3.79:1WCAG normal text: Fail

Contrast with black5.54:1WCAG normal text: AA

Greyscale equivalent#535353

Inverted#00DBD4

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#716527no red cones; affects about 1% of men; ΔE 82.9 from the original

Deuteranopia#A5931Dno green cones; the most common form, about 1% of men; ΔE 82.7 from the original

Tritanopia#FF002Bno blue cones; rare, and affects men and women equally; ΔE 4.2 from the original

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

Contrast with white, large text3.79:1WCAG large text: AA

Contrast with black, large text5.54:1WCAG large text: AAA

Named colours

Red · ΔE 14.5 Orange red · ΔE 18.4 Tomato · ΔE 21.4 Crimson · ΔE 21.8 Firebrick · ΔE 30.3 Coral · ΔE 34.3

Nearest named CSS colourRed (#FF0000)ΔE 14.5, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#24FFF8

Analogous#FF2499, #FF8A24

Triadic#2BFF24, #242BFF

Split complementary#24FF8B, #2499FF

Tetradic#99FF24, #24FFF8, #8A24FF

Tints, shades & saturation

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

Lighter +40%#FFF0F0

Lighter +30%#FFBDBF

Lighter +20%#FF8A8E

Lighter +10%#FF575C

Darker −10%#F00008

Darker −20%#BD0006

Darker −30%#8A0004

Darker −40%#570003

More saturated +25%#FF242B

Less saturated −25%#E43F45

Channel breakdown

R255

G36

B43

Red255 (100%)

Green36 (14.1%)

Blue43 (16.9%)

Hue358.08°

Saturation (HSL)100%

Lightness57.06%

Dominant channelRed

Hex per channelR FF · G 24 · B 2B

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

FF242B (chemical formula)

Formula
4,627.324 g/mol
244 atoms

FF242B has a molar mass of 4,627.324 g/mol, made up of 244 atoms across 2 elements: 243 × F, 1 × B.

Open this reading on its own page →

Molar mass

Molar mass4,627.324 g/mol

Total atoms per molecule244

Distinct elements2

Mass of one molecule7.6838523 × 10^-21 g

Molecules per gram1.3014305 × 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

F99.8%

B0.2%

Fluorine (F × 243)4,616.514 g/mol, 99.766%

Boron (B)10.81 g/mol, 0.234%

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