Colour

#FF1743

#FF1743
Red
Dark
Nearest: Crimson

#FF1743 is a red with RGB values 255, 23, 67 and HSL 349°, 100%, 55%. It is a dark colour, so black text on it reaches 5.5:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#FF1743#FF1743

HEX#FF1743

RGBrgb(255, 23, 67)

RGB (0–1)1, 0.0902, 0.2627

RGB percentages100%, 9%, 26.3%

HSLhsl(348.6, 100%, 54.5%)

HSV / HSBhsv(348.6, 91%, 100%)

CMYK0%, 91%, 73.7%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,717,635

CSS custom property--colour: #FF1743;

Brightness & contrast

Relative luminance0.22278WCAG 2.x, 0 is black and 1 is white

Perceived brightness142.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.46:1

Contrast with white3.85:1WCAG normal text: Fail

Contrast with black5.46:1WCAG normal text: AA

Greyscale equivalent#4C4C4C

Inverted#00E8BC

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6C6442no red cones; affects about 1% of men; ΔE 84.9 from the original

Deuteranopia#A2923Ano green cones; the most common form, about 1% of men; ΔE 84.8 from the original

Tritanopia#FF002Eno blue cones; rare, and affects men and women equally; ΔE 10.8 from the original

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

Contrast with white, large text3.85:1WCAG large text: AA

Contrast with black, large text5.46:1WCAG large text: AAA

Named colours

Crimson · ΔE 12.8 Tomato · ΔE 23.9 Red · ΔE 27.5 Firebrick · ΔE 28.1 Orange red · ΔE 31.6 Brown · ΔE 35.4

Nearest named CSS colourCrimson (#DC143C)ΔE 12.76, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#17FFD3

Analogous#FF17B7, #FF5F17

Triadic#43FF17, #1743FF

Split complementary#17FF5F, #17B7FF

Tetradic#B7FF17, #17FFD3, #5F17FF

Tints, shades & saturation

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

Lighter +40%#FFE3E8

Lighter +30%#FFB0BF

Lighter +20%#FF7D96

Lighter +10%#FF4A6C

Darker −10%#E3002B

Darker −20%#B00021

Darker −30%#7D0018

Darker −40%#4A000E

More saturated +25%#FF1743

Less saturated −25%#E23455

Channel breakdown

R255

G23

B67

Red255 (100%)

Green23 (9%)

Blue67 (26.3%)

Hue348.62°

Saturation (HSL)100%

Lightness54.51%

Dominant channelRed

Hex per channelR FF · G 17 · B 43

Keep nerding

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

#FF1743

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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