Recognised as Colour

#FF1D57

#FF1D57
Red
Dark
Nearest: Crimson

#FF1D57 is a red with RGB values 255, 29, 87 and HSL 345°, 100%, 56%. It is a dark colour, so black text on it reaches 5.6:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#FF1D57#FF1D57

HEX#FF1D57

RGBrgb(255, 29, 87)

RGB (0–1)1, 0.1137, 0.3412

RGB percentages100%, 11.4%, 34.1%

HSLhsl(344.6, 100%, 55.7%)

HSV / HSBhsv(344.6, 88.6%, 100%)

CMYK0%, 88.6%, 65.9%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,719,191

CSS custom property--colour: #FF1D57;

Brightness & contrast

Relative luminance0.22827WCAG 2.x, 0 is black and 1 is white

Perceived brightness144.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.57:1

Contrast with white3.77:1WCAG normal text: Fail

Contrast with black5.57:1WCAG normal text: AA

Greyscale equivalent#515151

Inverted#00E2A8

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6B6657no red cones; affects about 1% of men; ΔE 83.4 from the original

Deuteranopia#A19350no green cones; the most common form, about 1% of men; ΔE 84.1 from the original

Tritanopia#FF003Ano blue cones; rare, and affects men and women equally; ΔE 15.5 from the original

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

Contrast with white, large text3.77:1WCAG large text: AA

Contrast with black, large text5.57:1WCAG large text: AAA

Named colours

Crimson · ΔE 12.6 Tomato · ΔE 28.9 Firebrick · ΔE 29.7 Brown · ΔE 34.5 Deep pink · ΔE 34.8 Indian red · ΔE 35.3

Nearest named CSS colourCrimson (#DC143C)ΔE 12.58, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1DFFC5

Analogous#FF1DC8, #FF541D

Triadic#57FF1D, #1D57FF

Split complementary#1DFF54, #1DC8FF

Tetradic#C8FF1D, #1DFFC5, #541DFF

Tints, shades & saturation

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

Lighter +40%#FFE9EF

Lighter +30%#FFB6C9

Lighter +20%#FF83A3

Lighter +10%#FF507D

Darker −10%#E9003C

Darker −20%#B6002F

Darker −30%#830022

Darker −40%#500015

More saturated +25%#FF1D57

Less saturated −25%#E33965

Channel breakdown

R255

G29

B87

Red255 (100%)

Green29 (11.4%)

Blue87 (34.1%)

Hue344.6°

Saturation (HSL)100%

Lightness55.69%

Dominant channelRed

Hex per channelR FF · G 1D · B 57

Keep nerding

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

#FF1D57

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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