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Recognised as Colour

#66CA8B

  • #66CA8B
  • Green
  • Dark
  • Nearest: Medium seagreen

#66CA8B is a green with RGB values 102, 202, 139 and HSL 142°, 49%, 60%. It is a dark colour, so black text on it reaches 10.4:1 contrast (AAA for normal text). The nearest named colour is Medium seagreen.

Colour values

#66CA8B#66CA8B
HEX#66CA8B
RGBrgb(102, 202, 139)
RGB (0–1)0.4, 0.7922, 0.5451
RGB percentages40%, 79.2%, 54.5%
HSLhsl(142.2, 48.5%, 59.6%)
HSV / HSBhsv(142.2, 49.5%, 79.2%)
CMYK49.5%, 0%, 31.2%, 20.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,736,523
CSS custom property--colour: #66CA8B;

Brightness & contrast

Relative luminance0.4693WCAG 2.x, 0 is black and 1 is white
Perceived brightness171.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 10.39:1
Contrast with white2.02:1WCAG normal text: Fail
Contrast with black10.39:1WCAG normal text: AAA
Greyscale equivalent#B0B0B0
Inverted#993574

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#CABC87no red cones; affects about 1% of men; ΔE 40.9 from the original
Deuteranopia#BBB28Fno green cones; the most common form, about 1% of men; ΔE 41.1 from the original
Tritanopia#4EC8B9no blue cones; rare, and affects men and women equally; ΔE 26 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.02:1WCAG large text: Fail
Contrast with black, large text10.39:1WCAG large text: AAA

Named colours

Medium seagreen · ΔE 10.2Medium aquamarine · ΔE 15.3Light green · ΔE 19.1Dark seagreen · ΔE 20.3Aquamarine · ΔE 22.2Sea green · ΔE 23.1
Nearest named CSS colourMedium seagreen (#3CB371)ΔE 10.21, a distinctly different colour
Hue familygreen
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CA66A5
Analogous#73CA66, #66CABD
Triadic#8B66CA, #CA8B66
Split complementary#BD66CA, #CA6673
Tetradic#6673CA, #CA66A5, #CABD66

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FEFEFE
Lighter +30%#D8F1E1
Lighter +20%#B2E4C4
Lighter +10%#8CD7A8
Darker −10%#41BC6F
Darker −20%#349658
Darker −30%#277042
Darker −40%#1A4A2C
More saturated +25%#4CE484
Less saturated −25%#80B092

Channel breakdown

R102
G202
B139
Red102 (40%)
Green202 (79.2%)
Blue139 (54.5%)
Hue142.2°
Saturation (HSL)48.54%
Lightness59.61%
Dominant channelGreen
Hex per channelR 66 · G CA · B 8B

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Every value on this page was computed from “66ca8b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.