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Recognised as Colour

#18ADA3

  • #18ADA3
  • Cyan
  • Dark
  • Nearest: Light seagreen

#18ADA3 is a cyan with RGB values 24, 173, 163 and HSL 176°, 76%, 39%. It is a dark colour, so black text on it reaches 7.5:1 contrast (AAA for normal text). The nearest named colour is Light seagreen.

Colour values

#18ADA3#18ADA3
HEX#18ADA3
RGBrgb(24, 173, 163)
RGB (0–1)0.0941, 0.6784, 0.6392
RGB percentages9.4%, 67.8%, 63.9%
HSLhsl(176, 75.6%, 38.6%)
HSV / HSBhsv(176, 86.1%, 67.8%)
CMYK86.1%, 0%, 5.8%, 32.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,617,315
CSS custom property--colour: #18ADA3;

Brightness & contrast

Relative luminance0.32726WCAG 2.x, 0 is black and 1 is white
Perceived brightness144.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 7.55:1
Contrast with white2.78:1WCAG normal text: Fail
Contrast with black7.55:1WCAG normal text: AAA
Greyscale equivalent#8D8D8D
Inverted#E7525C

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#A3A3A3no red cones; affects about 1% of men; ΔE 38.4 from the original
Deuteranopia#9095A4no green cones; the most common form, about 1% of men; ΔE 39.4 from the original
Tritanopia#00B1AAno blue cones; rare, and affects men and women equally; ΔE 2.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.78:1WCAG large text: Fail
Contrast with black, large text7.55:1WCAG large text: AAA

Named colours

Light seagreen · ΔE 2.2Medium turquoise · ΔE 13.3Dark turquoise · ΔE 14.2Dark cyan · ΔE 14.3Medium aquamarine · ΔE 17.9Teal · ΔE 18.4
Nearest named CSS colourLight seagreen (#20B2AA)ΔE 2.21, below the just-noticeable difference
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#AD1822
Analogous#18AD59, #186CAD
Triadic#A318AD, #ADA318
Split complementary#AD186C, #AD5918
Tetradic#5918AD, #AD1822, #6DAD18

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9FF2EC
Lighter +30%#72ECE3
Lighter +20%#46E5DB
Lighter +10%#1EDACD
Darker −10%#128079
Darker −20%#0C534F
Darker −30%#052724
Darker −40%#000000
More saturated +25%#00C5B8
Less saturated −25%#31948E

Channel breakdown

R24
G173
B163
Red24 (9.4%)
Green173 (67.8%)
Blue163 (63.9%)
Hue175.97°
Saturation (HSL)75.63%
Lightness38.63%
Dominant channelGreen
Hex per channelR 18 · G AD · B A3

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Every value on this page was computed from “18ada3” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.