Recognised as Colour

#900D11

#900D11
Red
Dark
Nearest: Maroon

#900D11 is a red with RGB values 144, 13, 17 and HSL 358°, 83%, 31%. It is a dark colour, so white text on it reaches 9.3:1 contrast (AAA for normal text). The nearest named colour is Maroon.

Colour values

#900D11#900D11

HEX#900D11

RGBrgb(144, 13, 17)

RGB (0–1)0.5647, 0.051, 0.0667

RGB percentages56.5%, 5.1%, 6.7%

HSLhsl(358.2, 83.4%, 30.8%)

HSV / HSBhsv(358.2, 91%, 56.5%)

CMYK0%, 91%, 88.2%, 43.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer9,440,529

CSS custom property--colour: #900D11;

Brightness & contrast

Relative luminance0.06258WCAG 2.x, 0 is black and 1 is white

Perceived brightness79.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 9.33:1

Contrast with white9.33:1WCAG normal text: AAA

Contrast with black2.25:1WCAG normal text: Fail

Greyscale equivalent#292929

Inverted#6FF2EE

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#3C350Fno red cones; affects about 1% of men; ΔE 54.7 from the original

Deuteranopia#5B5008no green cones; the most common form, about 1% of men; ΔE 54.2 from the original

Tritanopia#9F0011no blue cones; rare, and affects men and women equally; ΔE 7.4 from the original

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

Contrast with white, large text9.33:1WCAG large text: AAA

Contrast with black, large text2.25:1WCAG large text: Fail

Named colours

Maroon · ΔE 5.6 Dark red · ΔE 5.7 Brown · ΔE 9.2 Firebrick · ΔE 10.7 Sienna · ΔE 25.3 Saddle brown · ΔE 25.7

Nearest named CSS colourMaroon (#800000)ΔE 5.59, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#0D908C

Analogous#900D52, #904B0D

Triadic#11900D, #0D1190

Split complementary#0D904B, #0D5290

Tetradic#52900D, #0D908C, #4B0D90

Tints, shades & saturation

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

Lighter +40%#F3767A

Lighter +30%#EE484D

Lighter +20%#EA191F

Lighter +10%#BF1117

Darker −10%#61090B

Darker −20%#320506

Darker −30%#040000

Darker −40%#000000

More saturated +25%#9D0005

Less saturated −25%#7C2123

Channel breakdown

R144

G13

B17

Red144 (56.5%)

Green13 (5.1%)

Blue17 (6.7%)

Hue358.17°

Saturation (HSL)83.44%

Lightness30.78%

Dominant channelRed

Hex per channelR 90 · G 0D · B 11

Keep nerding

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

#900D11

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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