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Recognised as Colour

#18BC99

  • #18BC99
  • Cyan
  • Dark
  • Nearest: Medium aquamarine

#18BC99 is a cyan with RGB values 24, 188, 153 and HSL 167°, 77%, 42%. It is a dark colour, so black text on it reaches 8.7:1 contrast (AAA for normal text). The nearest named colour is Medium aquamarine.

Colour values

#18BC99#18BC99
HEX#18BC99
RGBrgb(24, 188, 153)
RGB (0–1)0.0941, 0.7373, 0.6
RGB percentages9.4%, 73.7%, 60%
HSLhsl(167.2, 77.4%, 41.6%)
HSV / HSBhsv(167.2, 87.2%, 73.7%)
CMYK87.2%, 0%, 18.6%, 26.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,621,145
CSS custom property--colour: #18BC99;

Brightness & contrast

Relative luminance0.38461WCAG 2.x, 0 is black and 1 is white
Perceived brightness153.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 8.69:1
Contrast with white2.42:1WCAG normal text: Fail
Contrast with black8.69:1WCAG normal text: AAA
Greyscale equivalent#979797
Inverted#E74366

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#B6AF97no red cones; affects about 1% of men; ΔE 46.1 from the original
Deuteranopia#A2A19Cno green cones; the most common form, about 1% of men; ΔE 46.8 from the original
Tritanopia#00BEB2no blue cones; rare, and affects men and women equally; ΔE 13.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.42:1WCAG large text: Fail
Contrast with black, large text8.69:1WCAG large text: AAA

Named colours

Medium aquamarine · ΔE 11.5Light seagreen · ΔE 16.5Turquoise · ΔE 17.1Medium seagreen · ΔE 17.8Medium turquoise · ΔE 19.9Dark turquoise · ΔE 22.6
Nearest named CSS colourMedium aquamarine (#66CDAA)ΔE 11.54, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BC183B
Analogous#18BC47, #188DBC
Triadic#9918BC, #BC9918
Split complementary#BC188D, #BC4718
Tetradic#4718BC, #BC183B, #8DBC18

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#ACF4E5
Lighter +30%#7EEFD7
Lighter +20%#51E9C8
Lighter +10%#24E3BA
Darker −10%#128F74
Darker −20%#0C624F
Darker −30%#07342B
Darker −40%#010706
More saturated +25%#00D4A7
Less saturated −25%#33A28A

Channel breakdown

R24
G188
B153
Red24 (9.4%)
Green188 (73.7%)
Blue153 (60%)
Hue167.2°
Saturation (HSL)77.36%
Lightness41.57%
Dominant channelGreen
Hex per channelR 18 · G BC · B 99

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Every value on this page was computed from “18bc99” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.