Recognised as Colour

#66190B

#66190B
Red
Dark
Nearest: Maroon

#66190B is a red with RGB values 102, 25, 11 and HSL 9°, 81%, 22%. It is a dark colour, so white text on it reaches 12.3:1 contrast (AAA for normal text). The nearest named colour is Maroon.

Colour values

#66190B#66190B

HEX#66190B

RGBrgb(102, 25, 11)

RGB (0–1)0.4, 0.098, 0.0431

RGB percentages40%, 9.8%, 4.3%

HSLhsl(9.2, 80.5%, 22.2%)

HSV / HSBhsv(9.2, 89.2%, 40%)

CMYK0%, 75.5%, 89.2%, 60%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer6,691,083

CSS custom property--colour: #66190B;

Brightness & contrast

Relative luminance0.03544WCAG 2.x, 0 is black and 1 is white

Perceived brightness59.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 12.29:1

Contrast with white12.29:1WCAG normal text: AAA

Contrast with black1.71:1WCAG normal text: Fail

Greyscale equivalent#282828

Inverted#99E6F4

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#302A08no red cones; affects about 1% of men; ΔE 36.8 from the original

Deuteranopia#433B07no green cones; the most common form, about 1% of men; ΔE 36.7 from the original

Tritanopia#710017no blue cones; rare, and affects men and women equally; ΔE 12.5 from the original

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

Contrast with white, large text12.29:1WCAG large text: AAA

Contrast with black, large text1.71:1WCAG large text: Fail

Named colours

Maroon · ΔE 17.8 Saddle brown · ΔE 21.2 Brown · ΔE 22.4 Dark red · ΔE 22.6 Sienna · ΔE 23.3 Firebrick · ΔE 29.6

Nearest named CSS colourMaroon (#800000)ΔE 17.81, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#0B5866

Analogous#660B2A, #66470B

Triadic#0B6619, #190B66

Split complementary#0B6647, #0B2A66

Tetradic#2B660B, #0B5866, #470B66

Tints, shades & saturation

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

Lighter +40%#EC6951

Lighter +30%#E74123

Lighter +20%#C23015

Lighter +10%#942410

Darker −10%#380E06

Darker −20%#0A0201

Darker −30%#000000

Darker −40%#000000

More saturated +25%#711100

Less saturated −25%#582319

Channel breakdown

R102

G25

B11

Red102 (40%)

Green25 (9.8%)

Blue11 (4.3%)

Hue9.23°

Saturation (HSL)80.53%

Lightness22.16%

Dominant channelRed

Hex per channelR 66 · G 19 · B 0B

Keep nerding

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#66190B

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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