Colour

#91101E

#91101E
Red
Dark
Nearest: Brown

#91101E is a red with RGB values 145, 16, 30 and HSL 353°, 80%, 32%. 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

#91101E#91101E

HEX#91101E

RGBrgb(145, 16, 30)

RGB (0–1)0.5686, 0.0627, 0.1176

RGB percentages56.9%, 6.3%, 11.8%

HSLhsl(353.5, 80.1%, 31.6%)

HSV / HSBhsv(353.5, 89%, 56.9%)

CMYK0%, 89%, 79.3%, 43.1%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer9,506,846

CSS custom property--colour: #91101E;

Brightness & contrast

Relative luminance0.06484WCAG 2.x, 0 is black and 1 is white

Perceived brightness80.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 9.14:1

Contrast with white9.14:1WCAG normal text: AAA

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

Greyscale equivalent#2C2C2C

Inverted#6EEFE1

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#3C371Dno red cones; affects about 1% of men; ΔE 54.8 from the original

Deuteranopia#5B5219no green cones; the most common form, about 1% of men; ΔE 54.8 from the original

Tritanopia#A00018no blue cones; rare, and affects men and women equally; ΔE 9.8 from the original

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

Contrast with white, large text9.14:1WCAG large text: AAA

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

Named colours

Brown · ΔE 7.1 Maroon · ΔE 10.7 Dark red · ΔE 12.5 Firebrick · ΔE 13.2 Indian red · ΔE 24.5 Sienna · ΔE 25.9

Nearest named CSS colourBrown (#A52A2A)ΔE 7.15, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#109183

Analogous#91105F, #914310

Triadic#1E9110, #101E91

Split complementary#109143, #105E91

Tetradic#5E9110, #109183, #421091

Tints, shades & saturation

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

Lighter +40%#F17C89

Lighter +30%#EC4E60

Lighter +20%#E62136

Lighter +10%#BF1528

Darker −10%#630B14

Darker −20%#35060B

Darker −30%#070101

Darker −40%#000000

More saturated +25%#A10011

Less saturated −25%#7D242E

Channel breakdown

R145

G16

B30

Red145 (56.9%)

Green16 (6.3%)

Blue30 (11.8%)

Hue353.49°

Saturation (HSL)80.12%

Lightness31.57%

Dominant channelRed

Hex per channelR 91 · G 10 · B 1E

Keep nerding

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#91101E

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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