Recognised as Colour

#FB4C75

#FB4C75
Red
Dark
Nearest: Crimson

#FB4C75 is a red with RGB values 251, 76, 117 and HSL 346°, 96%, 64%. It is a dark colour, so black text on it reaches 6.4:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#FB4C75#FB4C75

HEX#FB4C75

RGBrgb(251, 76, 117)

RGB (0–1)0.9843, 0.298, 0.4588

RGB percentages98.4%, 29.8%, 45.9%

HSLhsl(345.9, 95.6%, 64.1%)

HSV / HSBhsv(345.9, 69.7%, 98.4%)

CMYK0%, 69.7%, 53.4%, 1.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,469,109

CSS custom property--colour: #FB4C75;

Brightness & contrast

Relative luminance0.26962WCAG 2.x, 0 is black and 1 is white

Perceived brightness154.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 6.39:1

Contrast with white3.29:1WCAG normal text: Fail

Contrast with black6.39:1WCAG normal text: AA

Greyscale equivalent#747474

Inverted#04B38A

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#787776no red cones; affects about 1% of men; ΔE 70.5 from the original

Deuteranopia#A59B71no green cones; the most common form, about 1% of men; ΔE 71.8 from the original

Tritanopia#FF245Dno blue cones; rare, and affects men and women equally; ΔE 14.5 from the original

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

Contrast with white, large text3.29:1WCAG large text: AA

Contrast with black, large text6.39:1WCAG large text: AAA

Named colours

Crimson · ΔE 21.2 Indian red · ΔE 24.9 Light coral · ΔE 26.7 Deep pink · ΔE 27.4 Salmon · ΔE 27.7 Pale violetred · ΔE 27.8

Nearest named CSS colourCrimson (#DC143C)ΔE 21.22, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#4CFBD2

Analogous#FB4CCD, #FB7A4C

Triadic#75FB4C, #4C75FB

Split complementary#4CFB7A, #4CCDFB

Tetradic#CDFB4C, #4CFBD2, #7A4CFB

Tints, shades & saturation

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

Lighter +40%#FFFFFF

Lighter +30%#FEE2E8

Lighter +20%#FDB0C2

Lighter +10%#FC7E9B

Darker −10%#FA1A4F

Darker −20%#DC0537

Darker −30%#AA042B

Darker −40%#78031E

More saturated +25%#FF4873

Less saturated −25%#E46381

Channel breakdown

R251

G76

B117

Red251 (98.4%)

Green76 (29.8%)

Blue117 (45.9%)

Hue345.94°

Saturation (HSL)95.63%

Lightness64.12%

Dominant channelRed

Hex per channelR FB · G 4C · B 75

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FB4C75 (chemical formula)

Formula
963.063 g/mol
80 atoms

FB4C75 has a molar mass of 963.063 g/mol, made up of 80 atoms across 3 elements: 1 × F, 4 × B, 75 × C.

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Molar mass

Molar mass963.063 g/mol

Total atoms per molecule80

Distinct elements3

Mass of one molecule1.5992037 × 10^-21 g

Molecules per gram6.253112 × 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

F2%

B4.5%

C93.5%

Fluorine (F)18.998 g/mol, 1.973%

Boron (B × 4)43.24 g/mol, 4.49%

Carbon (C × 75)900.825 g/mol, 93.537%

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