Recognised as Colour

#90091D

#90091D
Red
Dark
Nearest: Brown

#90091D is a red with RGB values 144, 9, 29 and HSL 351°, 88%, 30%. It is a dark colour, so white text on it reaches 9.4:1 contrast (AAA for normal text). The nearest named colour is Brown.

Colour values

#90091D#90091D

HEX#90091D

RGBrgb(144, 9, 29)

RGB (0–1)0.5647, 0.0353, 0.1137

RGB percentages56.5%, 3.5%, 11.4%

HSLhsl(351.1, 88.2%, 30%)

HSV / HSBhsv(351.1, 93.8%, 56.5%)

CMYK0%, 93.8%, 79.9%, 43.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer9,439,517

CSS custom property--colour: #90091D;

Brightness & contrast

Relative luminance0.06213WCAG 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 9.36:1

Contrast with white9.36:1WCAG normal text: AAA

Contrast with black2.24:1WCAG normal text: Fail

Greyscale equivalent#272727

Inverted#6FF6E2

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#3A351Cno red cones; affects about 1% of men; ΔE 55.6 from the original

Deuteranopia#5A5017no green cones; the most common form, about 1% of men; ΔE 55.1 from the original

Tritanopia#9F0014no 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 text9.36:1WCAG large text: AAA

Contrast with black, large text2.24:1WCAG large text: Fail

Named colours

Brown · ΔE 8 Maroon · ΔE 10.8 Dark red · ΔE 12.6 Firebrick · ΔE 13.4 Indian red · ΔE 25.3 Crimson · ΔE 26.3

Nearest named CSS colourBrown (#A52A2A)ΔE 7.98, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#09907C

Analogous#900961, #903809

Triadic#1D9009, #091D90

Split complementary#099038, #096190

Tetradic#619009, #09907C, #380990

Tints, shades & saturation

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

Lighter +40%#F66F83

Lighter +30%#F33F5A

Lighter +20%#F00F30

Lighter +10%#C00C27

Darker −10%#600613

Darker −20%#30030A

Darker −30%#000000

Darker −40%#000000

More saturated +25%#990017

Less saturated −25%#7D1C2A

Channel breakdown

R144

B29

Red144 (56.5%)

Green9 (3.5%)

Blue29 (11.4%)

Hue351.11°

Saturation (HSL)88.24%

Lightness30%

Dominant channelRed

Hex per channelR 90 · G 09 · B 1D

Keep nerding

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

#90091D

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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