Recognised as Colour

#DE0000

#DE0000
Red
Dark
Nearest: Red

#DE0000 is a red with RGB values 222, 0, 0 and HSL 0°, 100%, 44%. It is a dark colour, so white text on it reaches 5.1:1 contrast (AA for normal text). The nearest named colour is Red.

Colour values

#DE0000#DE0000

HEX#DE0000

RGBrgb(222, 0, 0)

RGB (0–1)0.8706, 0, 0

RGB percentages87.1%, 0%, 0%

HSLhsl(0, 100%, 43.5%)

HSV / HSBhsv(0, 100%, 87.1%)

CMYK0%, 100%, 100%, 12.9%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer14,548,992

CSS custom property--colour: #DE0000;

Brightness & contrast

Relative luminance0.1553WCAG 2.x, 0 is black and 1 is white

Perceived brightness121.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.11:1

Contrast with white5.11:1WCAG normal text: AA

Contrast with black4.11:1WCAG normal text: Fail

Greyscale equivalent#2F2F2F

Inverted#21FFFF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#5E5200no red cones; affects about 1% of men; ΔE 78.4 from the original

Deuteranopia#8D7D00no green cones; the most common form, about 1% of men; ΔE 77.6 from the original

Tritanopia#F5000Bno blue cones; rare, and affects men and women equally; ΔE 7.7 from the original

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

Contrast with white, large text5.11:1WCAG large text: AAA

Contrast with black, large text4.11:1WCAG large text: AA

Named colours

Red · ΔE 12.5 Orange red · ΔE 14.7 Tomato · ΔE 25.6 Crimson · ΔE 27 Firebrick · ΔE 29 Dark red · ΔE 33.9

Nearest named CSS colourRed (#FF0000)ΔE 12.46, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#00DEDE

Analogous#DE006F, #DE6F00

Triadic#00DE00, #0000DE

Split complementary#00DE6F, #006FDE

Tetradic#6FDE00, #00DEDE, #6F00DE

Tints, shades & saturation

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

Lighter +40%#FFABAB

Lighter +30%#FF7878

Lighter +20%#FF4545

Lighter +10%#FF1212

Darker −10%#AB0000

Darker −20%#780000

Darker −30%#450000

Darker −40%#120000

More saturated +25%#DE0000

Less saturated −25%#C21C1C

Channel breakdown

R222

Red222 (87.1%)

Green0 (0%)

Blue0 (0%)

Hue0°

Saturation (HSL)100%

Lightness43.53%

Dominant channelRed

Hex per channelR DE · G 00 · B 00

Keep nerding

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

#DE0000

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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