Colour

#DD001B

#DD001B
Red
Dark
Nearest: Crimson

#DD001B is a red with RGB values 221, 0, 27 and HSL 353°, 100%, 43%. It is a dark colour, so white text on it reaches 5.1:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#DD001B#DD001B

HEX#DD001B

RGBrgb(221, 0, 27)

RGB (0–1)0.8667, 0, 0.1059

RGB percentages86.7%, 0%, 10.6%

HSLhsl(352.7, 100%, 43.3%)

HSV / HSBhsv(352.7, 100%, 86.7%)

CMYK0%, 100%, 87.8%, 13.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer14,483,483

CSS custom property--colour: #DD001B;

Brightness & contrast

Relative luminance0.15451WCAG 2.x, 0 is black and 1 is white

Perceived brightness121.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.13:1

Contrast with white5.13:1WCAG normal text: AA

Contrast with black4.09:1WCAG normal text: Fail

Greyscale equivalent#313131

Inverted#22FFE4

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#5C5217no red cones; affects about 1% of men; ΔE 78.3 from the original

Deuteranopia#8C7C07no green cones; the most common form, about 1% of men; ΔE 77.5 from the original

Tritanopia#F40014no blue cones; rare, and affects men and women equally; ΔE 11.1 from the original

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

Contrast with white, large text5.13:1WCAG large text: AAA

Contrast with black, large text4.09:1WCAG large text: AA

Named colours

Crimson · ΔE 17.4 Red · ΔE 19.4 Orange red · ΔE 21.7 Tomato · ΔE 21.9 Firebrick · ΔE 22.2 Dark red · ΔE 29.5

Nearest named CSS colourCrimson (#DC143C)ΔE 17.41, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#00DDC2

Analogous#DD0089, #DD5400

Triadic#1BDD00, #001BDD

Split complementary#00DD54, #008ADD

Tetradic#89DD00, #00DDC2, #5400DD

Tints, shades & saturation

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

Lighter +40%#FFAAB4

Lighter +30%#FF7788

Lighter +20%#FF445B

Lighter +10%#FF112E

Darker −10%#AA0015

Darker −20%#77000F

Darker −30%#440008

Darker −40%#110002

More saturated +25%#DD001B

Less saturated −25%#C11C30

Channel breakdown

R221

B27

Red221 (86.7%)

Green0 (0%)

Blue27 (10.6%)

Hue352.67°

Saturation (HSL)100%

Lightness43.33%

Dominant channelRed

Hex per channelR DD · G 00 · B 1B

Keep nerding

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#DD001B

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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