Colour

#901D23

#901D23
Red
Dark
Nearest: Brown

#901D23 is a red with RGB values 144, 29, 35 and HSL 357°, 66%, 34%. It is a dark colour, so white text on it reaches 8.8:1 contrast (AAA for normal text). The nearest named colour is Brown.

Colour values

#901D23#901D23

HEX#901D23

RGBrgb(144, 29, 35)

RGB (0–1)0.5647, 0.1137, 0.1373

RGB percentages56.5%, 11.4%, 13.7%

HSLhsl(356.9, 66.5%, 33.9%)

HSV / HSBhsv(356.9, 79.9%, 56.5%)

CMYK0%, 79.9%, 75.7%, 43.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer9,444,643

CSS custom property--colour: #901D23;

Brightness & contrast

Relative luminance0.06929WCAG 2.x, 0 is black and 1 is white

Perceived brightness82.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 8.8:1

Contrast with white8.8:1WCAG normal text: AAA

Contrast with black2.39:1WCAG normal text: Fail

Greyscale equivalent#363636

Inverted#6FE2DC

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#403B22no red cones; affects about 1% of men; ΔE 51 from the original

Deuteranopia#5D531Fno green cones; the most common form, about 1% of men; ΔE 50.5 from the original

Tritanopia#9F0021no blue cones; rare, and affects men and women equally; ΔE 10.5 from the original

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

Contrast with white, large text8.8:1WCAG large text: AAA

Contrast with black, large text2.39:1WCAG large text: Fail

Named colours

Brown · ΔE 7.3 Maroon · ΔE 12.7 Dark red · ΔE 15.2 Firebrick · ΔE 15.7 Indian red · ΔE 22.4 Sienna · ΔE 23.2

Nearest named CSS colourBrown (#A52A2A)ΔE 7.32, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1D908A

Analogous#901D5D, #90511D

Triadic#23901D, #1D2390

Split complementary#1D9051, #1D5D90

Tetradic#5D901D, #1D908A, #501D90

Tints, shades & saturation

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

Lighter +40%#E99095

Lighter +30%#E0666C

Lighter +20%#D83B44

Lighter +10%#BA262D

Darker −10%#661419

Darker −20%#3B0C0E

Darker −30%#110304

Darker −40%#000000

More saturated +25%#A60710

Less saturated −25%#7A3336

Channel breakdown

R144

G29

B35

Red144 (56.5%)

Green29 (11.4%)

Blue35 (13.7%)

Hue356.87°

Saturation (HSL)66.47%

Lightness33.92%

Dominant channelRed

Hex per channelR 90 · G 1D · B 23

Keep nerding

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

#901D23

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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