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Recognised as Colour

#42CEAB

  • #42CEAB
  • Cyan
  • Dark
  • Nearest: Medium aquamarine

#42CEAB is a cyan with RGB values 66, 206, 171 and HSL 165°, 59%, 53%. It is a dark colour, so black text on it reaches 10.6:1 contrast (AAA for normal text). The nearest named colour is Medium aquamarine.

Colour values

#42CEAB#42CEAB
HEX#42CEAB
RGBrgb(66, 206, 171)
RGB (0–1)0.2588, 0.8078, 0.6706
RGB percentages25.9%, 80.8%, 67.1%
HSLhsl(165, 58.8%, 53.3%)
HSV / HSBhsv(165, 68%, 80.8%)
CMYK68%, 0%, 17%, 19.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,378,283
CSS custom property--colour: #42CEAB;

Brightness & contrast

Relative luminance0.48241WCAG 2.x, 0 is black and 1 is white
Perceived brightness171.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 10.65:1
Contrast with white1.97:1WCAG normal text: Fail
Contrast with black10.65:1WCAG normal text: AAA
Greyscale equivalent#AEAEAE
Inverted#BD3154

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#C8C1A9no red cones; affects about 1% of men; ΔE 44.5 from the original
Deuteranopia#B4B3ADno green cones; the most common form, about 1% of men; ΔE 44.9 from the original
Tritanopia#00D0C4no blue cones; rare, and affects men and women equally; ΔE 12.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text1.97:1WCAG large text: Fail
Contrast with black, large text10.65:1WCAG large text: AAA

Named colours

Medium aquamarine · ΔE 7.4Turquoise · ΔE 12.4Medium turquoise · ΔE 17.1Aquamarine · ΔE 17.3Light seagreen · ΔE 17.8Medium seagreen · ΔE 20.4
Nearest named CSS colourMedium aquamarine (#66CDAA)ΔE 7.41, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CE4265
Analogous#42CE65, #42ABCE
Triadic#AB42CE, #CEAB42
Split complementary#CE42AB, #CE6542
Tetradic#6542CE, #CE4265, #ABCE42

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E4F8F3
Lighter +30%#BCEEE1
Lighter +20%#93E3CF
Lighter +10%#6AD9BD
Darker −10%#2DB08F
Darker −20%#23876E
Darker −30%#185F4D
Darker −40%#0E362C
More saturated +25%#24ECBA
Less saturated −25%#60B09C

Channel breakdown

R66
G206
B171
Red66 (25.9%)
Green206 (80.8%)
Blue171 (67.1%)
Hue165°
Saturation (HSL)58.82%
Lightness53.33%
Dominant channelGreen
Hex per channelR 42 · G CE · B AB

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