Colour

#FF0031

#FF0031
Red
Dark
Nearest: Red

#FF0031 is a red with RGB values 255, 0, 49 and HSL 348°, 100%, 50%. It is a dark colour, so black text on it reaches 5.3:1 contrast (AA for normal text). The nearest named colour is Red.

Colour values

#FF0031#FF0031

HEX#FF0031

RGBrgb(255, 0, 49)

RGB (0–1)1, 0, 0.1922

RGB percentages100%, 0%, 19.2%

HSLhsl(348.5, 100%, 50%)

HSV / HSBhsv(348.5, 100%, 100%)

CMYK0%, 100%, 80.8%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,711,729

CSS custom property--colour: #FF0031;

Brightness & contrast

Relative luminance0.21482WCAG 2.x, 0 is black and 1 is white

Perceived brightness140.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.3:1

Contrast with white3.96:1WCAG normal text: Fail

Contrast with black5.3:1WCAG normal text: AA

Greyscale equivalent#3A3A3A

Inverted#00FFCE

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6B602Fno red cones; affects about 1% of men; ΔE 86.6 from the original

Deuteranopia#A29124no green cones; the most common form, about 1% of men; ΔE 86.8 from the original

Tritanopia#FF001Fno blue cones; rare, and affects men and women equally; ΔE 8.7 from the original

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

Contrast with white, large text3.96:1WCAG large text: AA

Contrast with black, large text5.3:1WCAG large text: AAA

Named colours

Red · ΔE 18.3 Crimson · ΔE 19.3 Orange red · ΔE 24.2 Tomato · ΔE 24.6 Firebrick · ΔE 30.8 Coral · ΔE 38

Nearest named CSS colourRed (#FF0000)ΔE 18.33, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#00FFCE

Analogous#FF00B0, #FF4F00

Triadic#31FF00, #0031FF

Split complementary#00FF4F, #00B0FF

Tetradic#B0FF00, #00FFCE, #4F00FF

Tints, shades & saturation

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

Lighter +40%#FFCCD6

Lighter +30%#FF99AD

Lighter +20%#FF6683

Lighter +10%#FF335A

Darker −10%#CC0027

Darker −20%#99001D

Darker −30%#660014

Darker −40%#33000A

More saturated +25%#FF0031

Less saturated −25%#DF2045

Channel breakdown

R255

B49

Red255 (100%)

Green0 (0%)

Blue49 (19.2%)

Hue348.47°

Saturation (HSL)100%

Lightness50%

Dominant channelRed

Hex per channelR FF · G 00 · B 31

Keep nerding

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

#FF0031

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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