Colour

#E23737

#E23737
Red
Dark
Nearest: Crimson

#E23737 is a red with RGB values 226, 55, 55 and HSL 0°, 75%, 55%. It is a dark colour, so black text on it reaches 4.8:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#E23737#E23737

HEX#E23737

RGBrgb(226, 55, 55)

RGB (0–1)0.8863, 0.2157, 0.2157

RGB percentages88.6%, 21.6%, 21.6%

HSLhsl(0, 74.7%, 55.1%)

HSV / HSBhsv(0, 75.7%, 88.6%)

CMYK0%, 75.7%, 75.7%, 11.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer14,825,271

CSS custom property--colour: #E23737;

Brightness & contrast

Relative luminance0.19177WCAG 2.x, 0 is black and 1 is white

Perceived brightness131.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 4.84:1

Contrast with white4.34:1WCAG normal text: Fail

Contrast with black4.84:1WCAG normal text: AA

Greyscale equivalent#5B5B5B

Inverted#1DC8C8

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6B6235no red cones; affects about 1% of men; ΔE 69.9 from the original

Deuteranopia#968730no green cones; the most common form, about 1% of men; ΔE 69.9 from the original

Tritanopia#F9003Ano blue cones; rare, and affects men and women equally; ΔE 15.2 from the original

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

Contrast with white, large text4.34:1WCAG large text: AA

Contrast with black, large text4.84:1WCAG large text: AAA

Named colours

Crimson · ΔE 10.6 Tomato · ΔE 14.2 Firebrick · ΔE 15 Brown · ΔE 22.6 Coral · ΔE 26 Dark red · ΔE 26.5

Nearest named CSS colourCrimson (#DC143C)ΔE 10.61, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#37E2E2

Analogous#E2378D, #E28D37

Triadic#37E237, #3737E2

Split complementary#37E28D, #378DE2

Tetradic#8DE237, #37E2E2, #8D37E2

Tints, shades & saturation

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

Lighter +40%#FCE9E9

Lighter +30%#F5BDBD

Lighter +20%#EF9090

Lighter +10%#E86464

Darker −10%#C91D1D

Darker −20%#9C1717

Darker −30%#701010

Darker −40%#430A0A

More saturated +25%#FF1A1A

Less saturated −25%#C55454

Channel breakdown

R226

G55

B55

Red226 (88.6%)

Green55 (21.6%)

Blue55 (21.6%)

Hue0°

Saturation (HSL)74.67%

Lightness55.1%

Dominant channelRed

Hex per channelR E2 · G 37 · B 37

Keep nerding

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

#E23737

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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