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Recognised as Colour

#42AA91

  • #42AA91
  • Cyan
  • Dark
  • Nearest: Light seagreen

#42AA91 is a cyan with RGB values 66, 170, 145 and HSL 166°, 44%, 46%. It is a dark colour, so black text on it reaches 7.4:1 contrast (AAA for normal text). The nearest named colour is Light seagreen.

Colour values

#42AA91#42AA91
HEX#42AA91
RGBrgb(66, 170, 145)
RGB (0–1)0.2588, 0.6667, 0.5686
RGB percentages25.9%, 66.7%, 56.9%
HSLhsl(165.6, 44.1%, 46.3%)
HSV / HSBhsv(165.6, 61.2%, 66.7%)
CMYK61.2%, 0%, 14.7%, 33.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,369,041
CSS custom property--colour: #42AA91;

Brightness & contrast

Relative luminance0.31952WCAG 2.x, 0 is black and 1 is white
Perceived brightness143.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 7.39:1
Contrast with white2.84:1WCAG normal text: Fail
Contrast with black7.39:1WCAG normal text: AAA
Greyscale equivalent#929292
Inverted#BD556E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#A4A090no red cones; affects about 1% of men; ΔE 35.1 from the original
Deuteranopia#959593no green cones; the most common form, about 1% of men; ΔE 35.9 from the original
Tritanopia#00ACA3no blue cones; rare, and affects men and women equally; ΔE 10.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.84:1WCAG large text: Fail
Contrast with black, large text7.39:1WCAG large text: AAA

Named colours

Light seagreen · ΔE 10.7Medium aquamarine · ΔE 13.3Dark cyan · ΔE 18Medium turquoise · ΔE 18.4Cadetblue · ΔE 20.1Sea green · ΔE 20.2
Nearest named CSS colourLight seagreen (#20B2AA)ΔE 10.75, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#AA425B
Analogous#42AA5D, #428FAA
Triadic#9142AA, #AA9142
Split complementary#AA428F, #AA5D42
Tetradic#5D42AA, #AA425B, #8FAA42

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#CDEBE4
Lighter +30%#A8DDD0
Lighter +20%#83CFBD
Lighter +10%#5EC1A9
Darker −10%#348572
Darker −20%#256152
Darker −30%#173C33
Darker −40%#091714
More saturated +25%#25C7A0
Less saturated −25%#608C82

Channel breakdown

R66
G170
B145
Red66 (25.9%)
Green170 (66.7%)
Blue145 (56.9%)
Hue165.58°
Saturation (HSL)44.07%
Lightness46.27%
Dominant channelGreen
Hex per channelR 42 · G AA · B 91

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Every value on this page was computed from “42aa91” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.