Recognised as Colour

#F31E4B

#F31E4B
Red
Dark
Nearest: Crimson

#F31E4B is a red with RGB values 243, 30, 75 and HSL 347°, 90%, 54%. It is a dark colour, so black text on it reaches 5.1:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#F31E4B#F31E4B

HEX#F31E4B

RGBrgb(243, 30, 75)

RGB (0–1)0.9529, 0.1176, 0.2941

RGB percentages95.3%, 11.8%, 29.4%

HSLhsl(347.3, 89.9%, 53.5%)

HSV / HSBhsv(347.3, 87.7%, 95.3%)

CMYK0%, 87.7%, 69.1%, 4.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer15,933,003

CSS custom property--colour: #F31E4B;

Brightness & contrast

Relative luminance0.20491WCAG 2.x, 0 is black and 1 is white

Perceived brightness137.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.1:1

Contrast with white4.12:1WCAG normal text: Fail

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

Greyscale equivalent#4F4F4F

Inverted#0CE1B4

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#67614Bno red cones; affects about 1% of men; ΔE 80.4 from the original

Deuteranopia#9A8C44no green cones; the most common form, about 1% of men; ΔE 80.7 from the original

Tritanopia#FF0034no blue cones; rare, and affects men and women equally; ΔE 16 from the original

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

Contrast with white, large text4.12:1WCAG large text: AA

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

Named colours

Crimson · ΔE 7.4 Firebrick · ΔE 24.5 Tomato · ΔE 24.9 Brown · ΔE 30.1 Indian red · ΔE 32.6 Salmon · ΔE 34.1

Nearest named CSS colourCrimson (#DC143C)ΔE 7.37, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1EF3C6

Analogous#F31EB6, #F35C1E

Triadic#4BF31E, #1E4BF3

Split complementary#1EF35C, #1EB5F3

Tetradic#B5F31E, #1EF3C6, #5B1EF3

Tints, shades & saturation

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

Lighter +40%#FDE0E6

Lighter +30%#FBAFBF

Lighter +20%#F87F98

Lighter +10%#F64E72

Darker −10%#D30B35

Darker −20%#A20929

Darker −30%#72061D

Darker −40%#420311

More saturated +25%#FF1244

Less saturated −25%#D53C5C

Channel breakdown

R243

G30

B75

Red243 (95.3%)

Green30 (11.8%)

Blue75 (29.4%)

Hue347.32°

Saturation (HSL)89.87%

Lightness53.53%

Dominant channelRed

Hex per channelR F3 · G 1E · B 4B

Keep nerding

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

#F31E4B

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

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