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Recognised as Colour

#66B8A2

  • #66B8A2
  • Cyan
  • Dark
  • Nearest: Medium aquamarine

#66B8A2 is a cyan with RGB values 102, 184, 162 and HSL 164°, 37%, 56%. It is a dark colour, so black text on it reaches 8.9:1 contrast (AAA for normal text). The nearest named colour is Medium aquamarine.

Colour values

#66B8A2#66B8A2
HEX#66B8A2
RGBrgb(102, 184, 162)
RGB (0–1)0.4, 0.7216, 0.6353
RGB percentages40%, 72.2%, 63.5%
HSLhsl(163.9, 36.6%, 56.1%)
HSV / HSBhsv(163.9, 44.6%, 72.2%)
CMYK44.6%, 0%, 12%, 27.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,731,938
CSS custom property--colour: #66B8A2;

Brightness & contrast

Relative luminance0.39714WCAG 2.x, 0 is black and 1 is white
Perceived brightness161.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 8.94:1
Contrast with white2.35:1WCAG normal text: Fail
Contrast with black8.94:1WCAG normal text: AAA
Greyscale equivalent#A5A5A5
Inverted#99475D

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#B3AFA1no red cones; affects about 1% of men; ΔE 29.7 from the original
Deuteranopia#A6A5A4no green cones; the most common form, about 1% of men; ΔE 30.7 from the original
Tritanopia#48BAB1no blue cones; rare, and affects men and women equally; ΔE 9.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.35:1WCAG large text: Fail
Contrast with black, large text8.94:1WCAG large text: AAA

Named colours

Medium aquamarine · ΔE 11.3Light seagreen · ΔE 12.6Medium turquoise · ΔE 15.7Dark seagreen · ΔE 16.3Cadetblue · ΔE 17.2Turquoise · ΔE 19.7
Nearest named CSS colourMedium aquamarine (#66CDAA)ΔE 11.35, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B8667C
Analogous#66B879, #66A5B8
Triadic#A266B8, #B8A266
Split complementary#B866A5, #B87966
Tetradic#7966B8, #B8667C, #A5B866

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#F1F9F7
Lighter +30%#CFE8E2
Lighter +20%#ACD8CC
Lighter +10%#89C8B7
Darker −10%#4AA189
Darker −20%#3A7E6C
Darker −30%#2A5B4E
Darker −40%#1A3830
More saturated +25%#4AD4AF
Less saturated −25%#829C95

Channel breakdown

R102
G184
B162
Red102 (40%)
Green184 (72.2%)
Blue162 (63.5%)
Hue163.9°
Saturation (HSL)36.61%
Lightness56.08%
Dominant channelGreen
Hex per channelR 66 · G B8 · B A2

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Every value on this page was computed from “66b8a2” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.