Colour

#FF3755

#FF3755
Red
Dark
Nearest: Crimson

#FF3755 is a red with RGB values 255, 55, 85 and HSL 351°, 100%, 61%. It is a dark colour, so black text on it reaches 5.9:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#FF3755#FF3755

HEX#FF3755

RGBrgb(255, 55, 85)

RGB (0–1)1, 0.2157, 0.3333

RGB percentages100%, 21.6%, 33.3%

HSLhsl(351, 100%, 60.8%)

HSV / HSBhsv(351, 78.4%, 100%)

CMYK0%, 78.4%, 66.7%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,725,845

CSS custom property--colour: #FF3755;

Brightness & contrast

Relative luminance0.24648WCAG 2.x, 0 is black and 1 is white

Perceived brightness148.5 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.93:1

Contrast with white3.54:1WCAG normal text: Fail

Contrast with black5.93:1WCAG normal text: AA

Greyscale equivalent#646464

Inverted#00C8AA

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#746D55no red cones; affects about 1% of men; ΔE 78.3 from the original

Deuteranopia#A6974Fno green cones; the most common form, about 1% of men; ΔE 78.7 from the original

Tritanopia#FF0045no blue cones; rare, and affects men and women equally; ΔE 9.8 from the original

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

Contrast with white, large text3.54:1WCAG large text: AA

Contrast with black, large text5.93:1WCAG large text: AAA

Named colours

Crimson · ΔE 10.3 Tomato · ΔE 22.2 Firebrick · ΔE 25.8 Salmon · ΔE 30.8 Brown · ΔE 31 Indian red · ΔE 31

Nearest named CSS colourCrimson (#DC143C)ΔE 10.27, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#37FFE1

Analogous#FF37B9, #FF7D37

Triadic#55FF37, #3755FF

Split complementary#37FF7D, #37B9FF

Tetradic#B9FF37, #37FFE1, #7D37FF

Tints, shades & saturation

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

Lighter +40%#FFFFFF

Lighter +30%#FFD0D7

Lighter +20%#FF9DAC

Lighter +10%#FF6A80

Darker −10%#FF042A

Darker −20%#D0001F

Darker −30%#9D0018

Darker −40%#6A0010

More saturated +25%#FF3755

Less saturated −25%#E65067

Channel breakdown

R255

G55

B85

Red255 (100%)

Green55 (21.6%)

Blue85 (33.3%)

Hue351°

Saturation (HSL)100%

Lightness60.78%

Dominant channelRed

Hex per channelR FF · G 37 · B 55

Keep nerding

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

#FF3755

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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