Colour

#DD1D00

#DD1D00
Red
Dark
Nearest: Orange red

#DD1D00 is a red with RGB values 221, 29, 0 and HSL 8°, 100%, 43%. It is a dark colour, so white text on it reaches 4.9:1 contrast (AA for normal text). The nearest named colour is Orange red.

Colour values

#DD1D00#DD1D00

HEX#DD1D00

RGBrgb(221, 29, 0)

RGB (0–1)0.8667, 0.1137, 0

RGB percentages86.7%, 11.4%, 0%

HSLhsl(7.9, 100%, 43.3%)

HSV / HSBhsv(7.9, 100%, 86.7%)

CMYK0%, 86.9%, 100%, 13.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer14,490,880

CSS custom property--colour: #DD1D00;

Brightness & contrast

Relative luminance0.16251WCAG 2.x, 0 is black and 1 is white

Perceived brightness122.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 4.94:1

Contrast with white4.94:1WCAG normal text: AA

Contrast with black4.25:1WCAG normal text: Fail

Greyscale equivalent#444444

Inverted#22E2FF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#625600no red cones; affects about 1% of men; ΔE 74.9 from the original

Deuteranopia#8F7F00no green cones; the most common form, about 1% of men; ΔE 74.2 from the original

Tritanopia#F4001Cno blue cones; rare, and affects men and women equally; ΔE 10.9 from the original

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

Contrast with white, large text4.94:1WCAG large text: AAA

Contrast with black, large text4.25:1WCAG large text: AA

Named colours

Orange red · ΔE 13.2 Red · ΔE 14.5 Tomato · ΔE 23.3 Crimson · ΔE 27.2 Firebrick · ΔE 27.6 Dark red · ΔE 32.5

Nearest named CSS colourOrange red (#FF4500)ΔE 13.18, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#00C0DD

Analogous#DD0051, #DD8C00

Triadic#00DD1D, #1D00DD

Split complementary#00DD8B, #0052DD

Tetradic#51DD00, #00C0DD, #8B00DD

Tints, shades & saturation

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

Lighter +40%#FFB5AA

Lighter +30%#FF8977

Lighter +20%#FF5D44

Lighter +10%#FF3011

Darker −10%#AA1600

Darker −20%#771000

Darker −30%#440900

Darker −40%#110200

More saturated +25%#DD1D00

Less saturated −25%#C1311C

Channel breakdown

R221

G29

Red221 (86.7%)

Green29 (11.4%)

Blue0 (0%)

Hue7.87°

Saturation (HSL)100%

Lightness43.33%

Dominant channelRed

Hex per channelR DD · G 1D · B 00

Keep nerding

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

#DD1D00

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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