Recognised as Colour

#66022B

#66022B
Red
Dark
Nearest: Brown

#66022B is a red with RGB values 102, 2, 43 and HSL 335°, 96%, 20%. It is a dark colour, so white text on it reaches 13.1:1 contrast (AAA for normal text). The nearest named colour is Brown.

Colour values

#66022B#66022B

HEX#66022B

RGBrgb(102, 2, 43)

RGB (0–1)0.4, 0.0078, 0.1686

RGB percentages40%, 0.8%, 16.9%

HSLhsl(335.4, 96.2%, 20.4%)

HSV / HSBhsv(335.4, 98%, 40%)

CMYK0%, 98%, 57.8%, 60%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer6,685,227

CSS custom property--colour: #66022B;

Brightness & contrast

Relative luminance0.03043WCAG 2.x, 0 is black and 1 is white

Perceived brightness57.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 13.06:1

Contrast with white13.06:1WCAG normal text: AAA

Contrast with black1.61:1WCAG normal text: Fail

Greyscale equivalent#1A1A1A

Inverted#99FDD4

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#22252Cno red cones; affects about 1% of men; ΔE 43.3 from the original

Deuteranopia#3B3729no green cones; the most common form, about 1% of men; ΔE 43.6 from the original

Tritanopia#700017no blue cones; rare, and affects men and women equally; ΔE 16.9 from the original

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

Contrast with white, large text13.06:1WCAG large text: AAA

Contrast with black, large text1.61:1WCAG large text: Fail

Named colours

Brown · ΔE 31.6 Maroon · ΔE 33.8 Indian red · ΔE 37.4 Dark red · ΔE 38 Firebrick · ΔE 40 Sienna · ΔE 40.7

Nearest named CSS colourBrown (#A52A2A)ΔE 31.61, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#02663D

Analogous#66025D, #660B02

Triadic#2B6602, #022B66

Split complementary#02660B, #025D66

Tetradic#5D6602, #02663D, #0B0266

Tints, shades & saturation

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

Lighter +40%#FB3989

Lighter +30%#FA076B

Lighter +20%#CA0455

Lighter +10%#980340

Darker −10%#340116

Darker −20%#020001

Darker −30%#000000

Darker −40%#000000

More saturated +25%#68002B

Less saturated −25%#590F2D

Channel breakdown

R102

B43

Red102 (40%)

Green2 (0.8%)

Blue43 (16.9%)

Hue335.4°

Saturation (HSL)96.15%

Lightness20.39%

Dominant channelRed

Hex per channelR 66 · G 02 · B 2B

Keep nerding

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

#66022B

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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