Recognised as Colour

#E4004B

#E4004B
Red
Dark
Nearest: Crimson

#E4004B is a red with RGB values 228, 0, 75 and HSL 340°, 100%, 45%. It is a dark colour, so white text on it reaches 4.8:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#E4004B#E4004B

HEX#E4004B

RGBrgb(228, 0, 75)

RGB (0–1)0.8941, 0, 0.2941

RGB percentages89.4%, 0%, 29.4%

HSLhsl(340.3, 100%, 44.7%)

HSV / HSBhsv(340.3, 100%, 89.4%)

CMYK0%, 100%, 67.1%, 10.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer14,942,283

CSS custom property--colour: #E4004B;

Brightness & contrast

Relative luminance0.17002WCAG 2.x, 0 is black and 1 is white

Perceived brightness127.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 4.77:1

Contrast with white4.77:1WCAG normal text: AA

Contrast with black4.4:1WCAG normal text: Fail

Greyscale equivalent#363636

Inverted#1BFFB4

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#5B574Bno red cones; affects about 1% of men; ΔE 79.2 from the original

Deuteranopia#8E8145no green cones; the most common form, about 1% of men; ΔE 79.4 from the original

Tritanopia#FB002Cno blue cones; rare, and affects men and women equally; ΔE 24.8 from the original

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

Contrast with white, large text4.77:1WCAG large text: AAA

Contrast with black, large text4.4:1WCAG large text: AA

Named colours

Crimson · ΔE 8.5 Firebrick · ΔE 24.2 Brown · ΔE 28.1 Tomato · ΔE 30 Indian red · ΔE 31.2 Deep pink · ΔE 34.3

Nearest named CSS colourCrimson (#DC143C)ΔE 8.54, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#00E499

Analogous#E400BD, #E42700

Triadic#4BE400, #004BE4

Split complementary#00E427, #00BDE4

Tetradic#BDE400, #00E499, #2700E4

Tints, shades & saturation

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

Lighter +40%#FFB1CB

Lighter +30%#FF7EA8

Lighter +20%#FF4B86

Lighter +10%#FF1864

Darker −10%#B1003A

Darker −20%#7E0029

Darker −30%#4B0019

Darker −40%#180008

More saturated +25%#E4004B

Less saturated −25%#C81C55

Channel breakdown

R228

B75

Red228 (89.4%)

Green0 (0%)

Blue75 (29.4%)

Hue340.26°

Saturation (HSL)100%

Lightness44.71%

Dominant channelRed

Hex per channelR E4 · G 00 · B 4B

Keep nerding

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

#E4004B

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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