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Recognised as Colour

#3FA580

  • #3FA580
  • Cyan
  • Dark
  • Nearest: Sea green

#3FA580 is a cyan with RGB values 63, 165, 128 and HSL 158°, 45%, 45%. It is a dark colour, so black text on it reaches 6.9:1 contrast (AA for normal text). The nearest named colour is Sea green.

Colour values

#3FA580#3FA580
HEX#3FA580
RGBrgb(63, 165, 128)
RGB (0–1)0.2471, 0.6471, 0.502
RGB percentages24.7%, 64.7%, 50.2%
HSLhsl(158.2, 44.7%, 44.7%)
HSV / HSBhsv(158.2, 61.8%, 64.7%)
CMYK61.8%, 0%, 22.4%, 35.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,171,136
CSS custom property--colour: #3FA580;

Brightness & contrast

Relative luminance0.29526WCAG 2.x, 0 is black and 1 is white
Perceived brightness138 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.91:1
Contrast with white3.04:1WCAG normal text: Fail
Contrast with black6.91:1WCAG normal text: AA
Greyscale equivalent#8D8D8D
Inverted#C05A7F

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#A29A7Eno red cones; affects about 1% of men; ΔE 37.2 from the original
Deuteranopia#939082no green cones; the most common form, about 1% of men; ΔE 37.2 from the original
Tritanopia#00A59Bno blue cones; rare, and affects men and women equally; ΔE 15.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.04:1WCAG large text: AA
Contrast with black, large text6.91:1WCAG large text: AAA

Named colours

Sea green · ΔE 13.6Medium aquamarine · ΔE 14.6Medium seagreen · ΔE 17.3Light seagreen · ΔE 17.5Dark seagreen · ΔE 19.8Dark cyan · ΔE 23
Nearest named CSS colourSea green (#2E8B57)ΔE 13.63, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A53F64
Analogous#3FA54D, #3F97A5
Triadic#803FA5, #A5803F
Split complementary#A53F97, #A54D3F
Tetradic#4D3FA5, #A53F64, #97A53F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C7E9DD
Lighter +30%#A2DBC6
Lighter +20%#7DCDB0
Lighter +10%#58BF9A
Darker −10%#318063
Darker −20%#235B47
Darker −30%#15362A
Darker −40%#07110D
More saturated +25%#23C288
Less saturated −25%#5C8978

Channel breakdown

R63
G165
B128
Red63 (24.7%)
Green165 (64.7%)
Blue128 (50.2%)
Hue158.24°
Saturation (HSL)44.74%
Lightness44.71%
Dominant channelGreen
Hex per channelR 3F · G A5 · B 80

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Every value on this page was computed from “3fa580” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.