Recognised as Colour

#900D39

#900D39
Red
Dark
Nearest: Brown

#900D39 is a red with RGB values 144, 13, 57 and HSL 340°, 83%, 31%. It is a dark colour, so white text on it reaches 9.1:1 contrast (AAA for normal text). The nearest named colour is Brown.

Colour values

#900D39#900D39

HEX#900D39

RGBrgb(144, 13, 57)

RGB (0–1)0.5647, 0.051, 0.2235

RGB percentages56.5%, 5.1%, 22.4%

HSLhsl(339.8, 83.4%, 30.8%)

HSV / HSBhsv(339.8, 91%, 56.5%)

CMYK0%, 91%, 60.4%, 43.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer9,440,569

CSS custom property--colour: #900D39;

Brightness & contrast

Relative luminance0.06513WCAG 2.x, 0 is black and 1 is white

Perceived brightness81.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 9.12:1

Contrast with white9.12:1WCAG normal text: AAA

Contrast with black2.3:1WCAG normal text: Fail

Greyscale equivalent#2C2C2C

Inverted#6FF2C6

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#37383Ano red cones; affects about 1% of men; ΔE 54.3 from the original

Deuteranopia#585136no green cones; the most common form, about 1% of men; ΔE 54.5 from the original

Tritanopia#9E0023no blue cones; rare, and affects men and women equally; ΔE 18.2 from the original

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

Contrast with white, large text9.12:1WCAG large text: AAA

Contrast with black, large text2.3:1WCAG large text: Fail

Named colours

Brown · ΔE 20.5 Indian red · ΔE 26.2 Maroon · ΔE 27.4 Firebrick · ΔE 27.8 Dark red · ΔE 30 Pale violetred · ΔE 32.6

Nearest named CSS colourBrown (#A52A2A)ΔE 20.45, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#0D9064

Analogous#900D7A, #90230D

Triadic#39900D, #0D3990

Split complementary#0D9023, #0D7A90

Tetradic#7A900D, #0D9064, #230D90

Tints, shades & saturation

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

Lighter +40%#F376A0

Lighter +30%#EE4880

Lighter +20%#EA195F

Lighter +10%#BF114C

Darker −10%#610926

Darker −20%#320514

Darker −30%#040001

Darker −40%#000000

More saturated +25%#9D0035

Less saturated −25%#7C213F

Channel breakdown

R144

G13

B57

Red144 (56.5%)

Green13 (5.1%)

Blue57 (22.4%)

Hue339.85°

Saturation (HSL)83.44%

Lightness30.78%

Dominant channelRed

Hex per channelR 90 · G 0D · B 39

Keep nerding

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

#900D39

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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