Colour

#E90000

#E90000
Red
Dark
Nearest: Red

#E90000 is a red with RGB values 233, 0, 0 and HSL 0°, 100%, 46%. It is a dark colour, so white text on it reaches 4.7:1 contrast (AA for normal text). The nearest named colour is Red.

Colour values

#E90000#E90000

HEX#E90000

RGBrgb(233, 0, 0)

RGB (0–1)0.9137, 0, 0

RGB percentages91.4%, 0%, 0%

HSLhsl(0, 100%, 45.7%)

HSV / HSBhsv(0, 100%, 91.4%)

CMYK0%, 100%, 100%, 8.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer15,269,888

CSS custom property--colour: #E90000;

Brightness & contrast

Relative luminance0.17324WCAG 2.x, 0 is black and 1 is white

Perceived brightness127.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 4.7:1

Contrast with white4.7:1WCAG normal text: AA

Contrast with black4.46:1WCAG normal text: Fail

Greyscale equivalent#323232

Inverted#16FFFF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#635600no red cones; affects about 1% of men; ΔE 81.1 from the original

Deuteranopia#958300no green cones; the most common form, about 1% of men; ΔE 79.9 from the original

Tritanopia#FF000Dno blue cones; rare, and affects men and women equally; ΔE 7.2 from the original

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

Contrast with white, large text4.7:1WCAG large text: AAA

Contrast with black, large text4.46:1WCAG large text: AA

Named colours

Red · ΔE 8.3 Orange red · ΔE 12.9 Tomato · ΔE 27.2 Crimson · ΔE 29.5 Firebrick · ΔE 32.9 Coral · ΔE 38

Nearest named CSS colourRed (#FF0000)ΔE 8.27, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#00E9E9

Analogous#E90075, #E97500

Triadic#00E900, #0000E9

Split complementary#00E975, #0075E9

Tetradic#75E900, #00E9E9, #7500E9

Tints, shades & saturation

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

Lighter +40%#FFB6B6

Lighter +30%#FF8383

Lighter +20%#FF5050

Lighter +10%#FF1D1D

Darker −10%#B60000

Darker −20%#830000

Darker −30%#500000

Darker −40%#1D0000

More saturated +25%#E90000

Less saturated −25%#CC1D1D

Channel breakdown

R233

Red233 (91.4%)

Green0 (0%)

Blue0 (0%)

Hue0°

Saturation (HSL)100%

Lightness45.69%

Dominant channelRed

Hex per channelR E9 · G 00 · B 00

Keep nerding

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#E90000

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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