Recognised as Colour

#E42742

#E42742
Red
Dark
Nearest: Crimson

#E42742 is a red with RGB values 228, 39, 66 and HSL 351°, 78%, 52%. It is a dark colour, so black text on it reaches 4.7:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#E42742#E42742

HEX#E42742

RGBrgb(228, 39, 66)

RGB (0–1)0.8941, 0.1529, 0.2588

RGB percentages89.4%, 15.3%, 25.9%

HSLhsl(351.4, 77.8%, 52.4%)

HSV / HSBhsv(351.4, 82.9%, 89.4%)

CMYK0%, 82.9%, 71.1%, 10.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer14,952,258

CSS custom property--colour: #E42742;

Brightness & contrast

Relative luminance0.18338WCAG 2.x, 0 is black and 1 is white

Perceived brightness130.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 4.67:1

Contrast with white4.5:1WCAG normal text: Fail

Contrast with black4.67:1WCAG normal text: AA

Greyscale equivalent#515151

Inverted#1BD8BD

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#645D41no red cones; affects about 1% of men; ΔE 74.4 from the original

Deuteranopia#93853Cno green cones; the most common form, about 1% of men; ΔE 74.6 from the original

Tritanopia#FB0034no blue cones; rare, and affects men and women equally; ΔE 16.2 from the original

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

Contrast with white, large text4.5:1WCAG large text: AA

Contrast with black, large text4.67:1WCAG large text: AAA

Named colours

Crimson · ΔE 3.1 Firebrick · ΔE 18 Tomato · ΔE 21.3 Brown · ΔE 23.9 Indian red · ΔE 27.8 Dark red · ΔE 29.8

Nearest named CSS colourCrimson (#DC143C)ΔE 3.09, a close match

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#27E4C9

Analogous#E427A0, #E46B27

Triadic#42E427, #2742E4

Split complementary#27E46B, #27A1E4

Tetradic#A0E427, #27E4C9, #6B27E4

Tints, shades & saturation

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

Lighter +40%#FBDCE1

Lighter +30%#F5AFB9

Lighter +20%#EF8291

Lighter +10%#EA546A

Darker −10%#C01830

Darker −20%#931225

Darker −30%#650D19

Darker −40%#38070E

More saturated +25%#FF0C2F

Less saturated −25%#C64558

Channel breakdown

R228

G39

B66

Red228 (89.4%)

Green39 (15.3%)

Blue66 (25.9%)

Hue351.43°

Saturation (HSL)77.78%

Lightness52.35%

Dominant channelRed

Hex per channelR E4 · G 27 · B 42

Keep nerding

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

#E42742

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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