Recognised as Colour

#66B8B7

#66B8B7
Cyan
Dark
Nearest: Cadetblue

#66B8B7 is a cyan with RGB values 102, 184, 183 and HSL 179°, 37%, 56%. It is a dark colour, so black text on it reaches 9.1:1 contrast (AAA for normal text). The nearest named colour is Cadetblue.

Colour values

#66B8B7#66B8B7

HEX#66B8B7

RGBrgb(102, 184, 183)

RGB (0–1)0.4, 0.7216, 0.7176

RGB percentages40%, 72.2%, 71.8%

HSLhsl(179.3, 36.6%, 56.1%)

HSV / HSBhsv(179.3, 44.6%, 72.2%)

CMYK44.6%, 0%, 0.5%, 27.8%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer6,731,959

CSS custom property--colour: #66B8B7;

Brightness & contrast

Relative luminance0.40525WCAG 2.x, 0 is black and 1 is white

Perceived brightness163.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 9.1:1

Contrast with white2.31:1WCAG normal text: Fail

Contrast with black9.1:1WCAG normal text: AAA

Greyscale equivalent#A6A6A6

Inverted#994748

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#AFB1B7no red cones; affects about 1% of men; ΔE 26.1 from the original

Deuteranopia#A0A6B8no green cones; the most common form, about 1% of men; ΔE 27 from the original

Tritanopia#3CBCB7no blue cones; rare, and affects men and women equally; ΔE 10 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text2.31:1WCAG large text: Fail

Contrast with black, large text9.1:1WCAG large text: AAA

Named colours

Cadetblue · ΔE 10.3 Light seagreen · ΔE 13 Medium turquoise · ΔE 14.1 Dark turquoise · ΔE 17 Dark cyan · ΔE 18.5 Powder blue · ΔE 19.7

Nearest named CSS colourCadetblue (#5F9EA0)ΔE 10.3, a distinctly different colour

Hue familycyan

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#B86667

Analogous#66B88E, #6690B8

Triadic#B766B8, #B8B766

Split complementary#B86690, #B88E66

Tetradic#8E66B8, #B86667, #90B866

Tints, shades & saturation

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

Lighter +40%#F1F9F9

Lighter +30%#CFE8E8

Lighter +20%#ACD8D8

Lighter +10%#89C8C7

Darker −10%#4AA19F

Darker −20%#3A7E7D

Darker −30%#2A5B5A

Darker −40%#1A3838

More saturated +25%#4AD4D2

Less saturated −25%#829C9C

Channel breakdown

R102

G184

B183

Red102 (40%)

Green184 (72.2%)

Blue183 (71.8%)

Hue179.27°

Saturation (HSL)36.61%

Lightness56.08%

Dominant channelGreen

Hex per channelR 66 · G B8 · B B7

Keep nerding

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

#66B8B7

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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