Recognised as Colour

#DF0040

#DF0040
Red
Dark
Nearest: Crimson

#DF0040 is a red with RGB values 223, 0, 64 and HSL 343°, 100%, 44%. It is a dark colour, so white text on it reaches 5:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#DF0040#DF0040

HEX#DF0040

RGBrgb(223, 0, 64)

RGB (0–1)0.8745, 0, 0.251

RGB percentages87.5%, 0%, 25.1%

HSLhsl(342.8, 100%, 43.7%)

HSV / HSBhsv(342.8, 100%, 87.5%)

CMYK0%, 100%, 71.3%, 12.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer14,614,592

CSS custom property--colour: #DF0040;

Brightness & contrast

Relative luminance0.16058WCAG 2.x, 0 is black and 1 is white

Perceived brightness123.8 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 4.99:1

Contrast with white4.99:1WCAG normal text: AA

Contrast with black4.21:1WCAG normal text: Fail

Greyscale equivalent#343434

Inverted#20FFBF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#5A5440no red cones; affects about 1% of men; ΔE 78 from the original

Deuteranopia#8B7E39no green cones; the most common form, about 1% of men; ΔE 78.5 from the original

Tritanopia#F50026no blue cones; rare, and affects men and women equally; ΔE 21.4 from the original

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

Contrast with white, large text4.99:1WCAG large text: AAA

Contrast with black, large text4.21:1WCAG large text: AA

Named colours

Crimson · ΔE 3.6 Firebrick · ΔE 20.5 Brown · ΔE 25.8 Tomato · ΔE 26.6 Indian red · ΔE 31 Dark red · ΔE 31.2

Nearest named CSS colourCrimson (#DC143C)ΔE 3.57, a close match

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#00DF9F

Analogous#DF00B0, #DF3000

Triadic#40DF00, #0040DF

Split complementary#00DF30, #00B0DF

Tetradic#B0DF00, #00DF9F, #3000DF

Tints, shades & saturation

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

Lighter +40%#FFACC4

Lighter +30%#FF799F

Lighter +20%#FF467B

Lighter +10%#FF1357

Darker −10%#AC0031

Darker −20%#790023

Darker −30%#460014

Darker −40%#130005

More saturated +25%#DF0040

Less saturated −25%#C31C4C

Channel breakdown

R223

B64

Red223 (87.5%)

Green0 (0%)

Blue64 (25.1%)

Hue342.78°

Saturation (HSL)100%

Lightness43.73%

Dominant channelRed

Hex per channelR DF · G 00 · B 40

Keep nerding

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

#DF0040

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

Nerdulate something else