Colour

#FF556D

#FF556D
Red
Dark
Nearest: Crimson

#FF556D is a red with RGB values 255, 85, 109 and HSL 352°, 100%, 67%. It is a dark colour, so black text on it reaches 6.8:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#FF556D#FF556D

HEX#FF556D

RGBrgb(255, 85, 109)

RGB (0–1)1, 0.3333, 0.4275

RGB percentages100%, 33.3%, 42.7%

HSLhsl(351.5, 100%, 66.7%)

HSV / HSBhsv(351.5, 66.7%, 100%)

CMYK0%, 66.7%, 57.3%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,733,549

CSS custom property--colour: #FF556D;

Brightness & contrast

Relative luminance0.28861WCAG 2.x, 0 is black and 1 is white

Perceived brightness158.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 6.77:1

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

Contrast with black6.77:1WCAG normal text: AA

Greyscale equivalent#7B7B7B

Inverted#00AA92

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#807C6Dno red cones; affects about 1% of men; ΔE 69 from the original

Deuteranopia#AC9F69no green cones; the most common form, about 1% of men; ΔE 69.4 from the original

Tritanopia#FF2F5Fno blue cones; rare, and affects men and women equally; ΔE 11.9 from the original

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

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

Contrast with black, large text6.77:1WCAG large text: AAA

Named colours

Crimson · ΔE 17.9 Indian red · ΔE 22.1 Salmon · ΔE 22.2 Light coral · ΔE 23.8 Tomato · ΔE 24.4 Firebrick · ΔE 27.6

Nearest named CSS colourCrimson (#DC143C)ΔE 17.86, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#55FFE7

Analogous#FF55C2, #FF9255

Triadic#6DFF55, #556DFF

Split complementary#55FF92, #55C2FF

Tetradic#C2FF55, #55FFE7, #9255FF

Tints, shades & saturation

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

Lighter +40%#FFFFFF

Lighter +30%#FFEEF0

Lighter +20%#FFBBC5

Lighter +10%#FF8899

Darker −10%#FF2241

Darker −20%#EE0022

Darker −30%#BB001A

Darker −40%#880013

More saturated +25%#FF556D

Less saturated −25%#EA6A7C

Channel breakdown

R255

G85

B109

Red255 (100%)

Green85 (33.3%)

Blue109 (42.7%)

Hue351.53°

Saturation (HSL)100%

Lightness66.67%

Dominant channelRed

Hex per channelR FF · G 55 · B 6D

Keep nerding

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

#FF556D

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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