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Recognised as Colour

#42BC8B

  • #42BC8B
  • Cyan
  • Dark
  • Nearest: Medium seagreen

#42BC8B is a cyan with RGB values 66, 188, 139 and HSL 156°, 48%, 50%. It is a dark colour, so black text on it reaches 8.8:1 contrast (AAA for normal text). The nearest named colour is Medium seagreen.

Colour values

#42BC8B#42BC8B
HEX#42BC8B
RGBrgb(66, 188, 139)
RGB (0–1)0.2588, 0.7373, 0.5451
RGB percentages25.9%, 73.7%, 54.5%
HSLhsl(155.9, 48%, 49.8%)
HSV / HSBhsv(155.9, 64.9%, 73.7%)
CMYK64.9%, 0%, 26.1%, 26.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,373,643
CSS custom property--colour: #42BC8B;

Brightness & contrast

Relative luminance0.38989WCAG 2.x, 0 is black and 1 is white
Perceived brightness155.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 8.8:1
Contrast with white2.39:1WCAG normal text: Fail
Contrast with black8.8:1WCAG normal text: AAA
Greyscale equivalent#9F9F9F
Inverted#BD4374

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#B9AF88no red cones; affects about 1% of men; ΔE 43.3 from the original
Deuteranopia#A8A38Eno green cones; the most common form, about 1% of men; ΔE 43.7 from the original
Tritanopia#00BCAFno blue cones; rare, and affects men and women equally; ΔE 20 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.39:1WCAG large text: Fail
Contrast with black, large text8.8:1WCAG large text: AAA

Named colours

Medium seagreen · ΔE 10.3Medium aquamarine · ΔE 12Sea green · ΔE 18.8Dark seagreen · ΔE 22Turquoise · ΔE 22.9Light seagreen · ΔE 23
Nearest named CSS colourMedium seagreen (#3CB371)ΔE 10.27, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BC4273
Analogous#42BC4E, #42B0BC
Triadic#8B42BC, #BC8B42
Split complementary#BC42B0, #BC4E42
Tetradic#4E42BC, #BC4273, #B0BC42

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D9F1E7
Lighter +30%#B3E4D0
Lighter +20%#8DD7B9
Lighter +10%#67CAA2
Darker −10%#35966F
Darker −20%#277153
Darker −30%#1A4B37
Darker −40%#0D251B
More saturated +25%#22DC91
Less saturated −25%#629C85

Channel breakdown

R66
G188
B139
Red66 (25.9%)
Green188 (73.7%)
Blue139 (54.5%)
Hue155.9°
Saturation (HSL)48.03%
Lightness49.8%
Dominant channelGreen
Hex per channelR 42 · G BC · B 8B

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Every value on this page was computed from “42bc8b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.