Colour

#664F4B

#664F4B
Red
Dark
Nearest: Dim grey

#664F4B is a red with RGB values 102, 79, 75 and HSL 9°, 15%, 35%. It is a dark colour, so white text on it reaches 7.5:1 contrast (AAA for normal text). The nearest named colour is Dim grey.

Colour values

#664F4B#664F4B

HEX#664F4B

RGBrgb(102, 79, 75)

RGB (0–1)0.4, 0.3098, 0.2941

RGB percentages40%, 31%, 29.4%

HSLhsl(8.9, 15.3%, 34.7%)

HSV / HSBhsv(8.9, 26.5%, 40%)

CMYK0%, 22.5%, 26.5%, 60%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer6,704,971

CSS custom property--colour: #664F4B;

Brightness & contrast

Relative luminance0.08925WCAG 2.x, 0 is black and 1 is white

Perceived brightness86.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 7.54:1

Contrast with white7.54:1WCAG normal text: AAA

Contrast with black2.78:1WCAG normal text: Fail

Greyscale equivalent#545454

Inverted#99B0B4

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#54524Bno red cones; affects about 1% of men; ΔE 9.8 from the original

Deuteranopia#59564Bno green cones; the most common form, about 1% of men; ΔE 10 from the original

Tritanopia#6B4C4Eno blue cones; rare, and affects men and women equally; ΔE 4.9 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text7.54:1WCAG large text: AAA

Contrast with black, large text2.78:1WCAG large text: Fail

Named colours

Dim grey · ΔE 13.8 Gray · ΔE 20.8 Dark slate grey · ΔE 23.3 Slate grey · ΔE 26.2 Light slate grey · ΔE 28.7 Rosy brown · ΔE 28.9

Nearest named CSS colourDim grey (#696969)ΔE 13.8, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#4B6266

Analogous#664B54, #665D4B

Triadic#4B664F, #4F4B66

Split complementary#4B665D, #4B5566

Tetradic#54664B, #4B6266, #5D4B66

Tints, shades & saturation

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

Lighter +40%#C8B8B5

Lighter +30%#B39B97

Lighter +20%#9D7F7A

Lighter +10%#836661

Darker −10%#493835

Darker −20%#2B2120

Darker −30%#0E0B0A

Darker −40%#000000

More saturated +25%#7C3F35

Less saturated −25%#595959

Channel breakdown

R102

G79

B75

Red102 (40%)

Green79 (31%)

Blue75 (29.4%)

Hue8.89°

Saturation (HSL)15.25%

Lightness34.71%

Dominant channelRed

Hex per channelR 66 · G 4F · B 4B

Keep nerding

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

#664F4B

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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