Colour

#D90021

#D90021
Red
Dark
Nearest: Crimson

#D90021 is a red with RGB values 217, 0, 33 and HSL 351°, 100%, 43%. It is a dark colour, so white text on it reaches 5.3:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#D90021#D90021

HEX#D90021

RGBrgb(217, 0, 33)

RGB (0–1)0.851, 0, 0.1294

RGB percentages85.1%, 0%, 12.9%

HSLhsl(350.9, 100%, 42.5%)

HSV / HSBhsv(350.9, 100%, 85.1%)

CMYK0%, 100%, 84.8%, 14.9%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer14,221,345

CSS custom property--colour: #D90021;

Brightness & contrast

Relative luminance0.14862WCAG 2.x, 0 is black and 1 is white

Perceived brightness119.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.29:1

Contrast with white5.29:1WCAG normal text: AA

Contrast with black3.97:1WCAG normal text: Fail

Greyscale equivalent#313131

Inverted#26FFDE

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#5A501Eno red cones; affects about 1% of men; ΔE 76.8 from the original

Deuteranopia#897A13no green cones; the most common form, about 1% of men; ΔE 76.7 from the original

Tritanopia#F00016no blue cones; rare, and affects men and women equally; ΔE 12.9 from the original

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

Contrast with white, large text5.29:1WCAG large text: AAA

Contrast with black, large text3.97:1WCAG large text: AA

Named colours

Crimson · ΔE 13.5 Firebrick · ΔE 19.1 Tomato · ΔE 21.5 Red · ΔE 23.4 Orange red · ΔE 25.3 Dark red · ΔE 27.3

Nearest named CSS colourCrimson (#DC143C)ΔE 13.51, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#00D9B8

Analogous#D9008E, #D94B00

Triadic#21D900, #0021D9

Split complementary#00D94B, #008ED9

Tetradic#8ED900, #00D9B8, #4B00D9

Tints, shades & saturation

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

Lighter +40%#FFA6B4

Lighter +30%#FF7388

Lighter +20%#FF405D

Lighter +10%#FF0D32

Darker −10%#A60019

Darker −20%#730011

Darker −30%#40000A

Darker −40%#0D0002

More saturated +25%#D90021

Less saturated −25%#BE1B34

Channel breakdown

R217

B33

Red217 (85.1%)

Green0 (0%)

Blue33 (12.9%)

Hue350.88°

Saturation (HSL)100%

Lightness42.55%

Dominant channelRed

Hex per channelR D9 · G 00 · B 21

Keep nerding

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

#D90021

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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