Recognised as Colour

#D81824

#D81824
Red
Dark
Nearest: Crimson

#D81824 is a red with RGB values 216, 24, 36 and HSL 356°, 80%, 47%. It is a dark colour, so white text on it reaches 5.2:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#D81824#D81824

HEX#D81824

RGBrgb(216, 24, 36)

RGB (0–1)0.8471, 0.0941, 0.1412

RGB percentages84.7%, 9.4%, 14.1%

HSLhsl(356.3, 80%, 47.1%)

HSV / HSBhsv(356.3, 88.9%, 84.7%)

CMYK0%, 88.9%, 83.3%, 15.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer14,161,956

CSS custom property--colour: #D81824;

Brightness & contrast

Relative luminance0.1538WCAG 2.x, 0 is black and 1 is white

Perceived brightness120.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.15:1

Contrast with white5.15:1WCAG normal text: AA

Contrast with black4.08:1WCAG normal text: Fail

Greyscale equivalent#424242

Inverted#27E7DB

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#5D5321no red cones; affects about 1% of men; ΔE 74 from the original

Deuteranopia#8A7B18no green cones; the most common form, about 1% of men; ΔE 73.9 from the original

Tritanopia#EE0021no 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 text5.15:1WCAG large text: AAA

Contrast with black, large text4.08:1WCAG large text: AA

Named colours

Crimson · ΔE 12.7 Firebrick · ΔE 16.7 Tomato · ΔE 19.3 Red · ΔE 25.1 Dark red · ΔE 25.6 Orange red · ΔE 25.6

Nearest named CSS colourCrimson (#DC143C)ΔE 12.66, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#18D8CC

Analogous#D81884, #D86C18

Triadic#24D818, #1824D8

Split complementary#18D86C, #1884D8

Tetradic#84D818, #18D8CC, #6C18D8

Tints, shades & saturation

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

Lighter +40%#F8C4C7

Lighter +30%#F3969C

Lighter +20%#EE6870

Lighter +10%#E93A45

Darker −10%#AA131C

Darker −20%#7C0E15

Darker −30%#4E090D

Darker −40%#200405

More saturated +25%#F0000F

Less saturated −25%#BA363E

Channel breakdown

R216

G24

B36

Red216 (84.7%)

Green24 (9.4%)

Blue36 (14.1%)

Hue356.25°

Saturation (HSL)80%

Lightness47.06%

Dominant channelRed

Hex per channelR D8 · G 18 · B 24

Keep nerding

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

#D81824

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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