Recognised as Colour

#90172D

#90172D
Red
Dark
Nearest: Brown

#90172D is a red with RGB values 144, 23, 45 and HSL 349°, 72%, 33%. It is a dark colour, so white text on it reaches 9:1 contrast (AAA for normal text). The nearest named colour is Brown.

Colour values

#90172D#90172D

HEX#90172D

RGBrgb(144, 23, 45)

RGB (0–1)0.5647, 0.0902, 0.1765

RGB percentages56.5%, 9%, 17.6%

HSLhsl(349.1, 72.5%, 32.7%)

HSV / HSBhsv(349.1, 84%, 56.5%)

CMYK0%, 84%, 68.7%, 43.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer9,443,117

CSS custom property--colour: #90172D;

Brightness & contrast

Relative luminance0.06732WCAG 2.x, 0 is black and 1 is white

Perceived brightness82.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 8.95:1

Contrast with white8.95:1WCAG normal text: AAA

Contrast with black2.35:1WCAG normal text: Fail

Greyscale equivalent#323232

Inverted#6FE8D2

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#3D392Dno red cones; affects about 1% of men; ΔE 51.9 from the original

Deuteranopia#5B5229no green cones; the most common form, about 1% of men; ΔE 52.2 from the original

Tritanopia#9F0021no blue cones; rare, and affects men and women equally; ΔE 13 from the original

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

Contrast with white, large text8.95:1WCAG large text: AAA

Contrast with black, large text2.35:1WCAG large text: Fail

Named colours

Brown · ΔE 12.2 Maroon · ΔE 18.9 Firebrick · ΔE 20.4 Dark red · ΔE 21.5 Indian red · ΔE 22.8 Sienna · ΔE 28.3

Nearest named CSS colourBrown (#A52A2A)ΔE 12.25, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#17907A

Analogous#90176A, #903D17

Triadic#2D9017, #172D90

Split complementary#17903D, #176A90

Tetradic#6A9017, #17907A, #3D1790

Tints, shades & saturation

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

Lighter +40%#EC8799

Lighter +30%#E55B74

Lighter +20%#DE2F4F

Lighter +10%#BC1E3B

Darker −10%#64101F

Darker −20%#380912

Darker −30%#0C0204

Darker −40%#000000

More saturated +25%#A50220

Less saturated −25%#7B2C3A

Channel breakdown

R144

G23

B45

Red144 (56.5%)

Green23 (9%)

Blue45 (17.6%)

Hue349.09°

Saturation (HSL)72.46%

Lightness32.75%

Dominant channelRed

Hex per channelR 90 · G 17 · B 2D

Keep nerding

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

#90172D

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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