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Recognised as Colour

#37A18D

  • #37A18D
  • Cyan
  • Dark
  • Nearest: Light seagreen

#37A18D is a cyan with RGB values 55, 161, 141 and HSL 169°, 49%, 42%. It is a dark colour, so black text on it reaches 6.6:1 contrast (AA for normal text). The nearest named colour is Light seagreen.

Colour values

#37A18D#37A18D
HEX#37A18D
RGBrgb(55, 161, 141)
RGB (0–1)0.2157, 0.6314, 0.5529
RGB percentages21.6%, 63.1%, 55.3%
HSLhsl(168.7, 49.1%, 42.4%)
HSV / HSBhsv(168.7, 65.8%, 63.1%)
CMYK65.8%, 0%, 12.4%, 36.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,645,837
CSS custom property--colour: #37A18D;

Brightness & contrast

Relative luminance0.28225WCAG 2.x, 0 is black and 1 is white
Perceived brightness135.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.65:1
Contrast with white3.16:1WCAG normal text: Fail
Contrast with black6.65:1WCAG normal text: AA
Greyscale equivalent#898989
Inverted#C85E72

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#9B978Cno red cones; affects about 1% of men; ΔE 34.8 from the original
Deuteranopia#8B8C8Fno green cones; the most common form, about 1% of men; ΔE 35.4 from the original
Tritanopia#00A39Bno blue cones; rare, and affects men and women equally; ΔE 7.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.16:1WCAG large text: AA
Contrast with black, large text6.65:1WCAG large text: AAA

Named colours

Light seagreen · ΔE 10.1Dark cyan · ΔE 13.9Teal · ΔE 16.7Medium aquamarine · ΔE 17.3Cadetblue · ΔE 17.8Medium turquoise · ΔE 19.7
Nearest named CSS colourLight seagreen (#20B2AA)ΔE 10.07, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A1374B
Analogous#37A158, #3780A1
Triadic#8D37A1, #A18D37
Split complementary#A13780, #A15837
Tetradic#5837A1, #A1374B, #80A137

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#BCE8E0
Lighter +30%#96DBCE
Lighter +20%#70CEBC
Lighter +10%#4AC1AB
Darker −10%#2A7B6C
Darker −20%#1D554A
Darker −30%#102F29
Darker −40%#030908
More saturated +25%#1CBC9E
Less saturated −25%#52867C

Channel breakdown

R55
G161
B141
Red55 (21.6%)
Green161 (63.1%)
Blue141 (55.3%)
Hue168.68°
Saturation (HSL)49.07%
Lightness42.35%
Dominant channelGreen
Hex per channelR 37 · G A1 · B 8D

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Every value on this page was computed from “37a18d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.