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Recognised as Colour

#18C7DA

  • #18C7DA
  • Cyan
  • Dark
  • Nearest: Dark turquoise

#18C7DA is a cyan with RGB values 24, 199, 218 and HSL 186°, 80%, 47%. It is a dark colour, so black text on it reaches 10.2:1 contrast (AAA for normal text). The nearest named colour is Dark turquoise.

Colour values

#18C7DA#18C7DA
HEX#18C7DA
RGBrgb(24, 199, 218)
RGB (0–1)0.0941, 0.7804, 0.8549
RGB percentages9.4%, 78%, 85.5%
HSLhsl(185.9, 80.2%, 47.5%)
HSV / HSBhsv(185.9, 89%, 85.5%)
CMYK89%, 8.7%, 0%, 14.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,624,026
CSS custom property--colour: #18C7DA;

Brightness & contrast

Relative luminance0.46103WCAG 2.x, 0 is black and 1 is white
Perceived brightness169.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 10.22:1
Contrast with white2.05:1WCAG normal text: Fail
Contrast with black10.22:1WCAG normal text: AAA
Greyscale equivalent#A3A3A3
Inverted#E73825

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#B4BFDBno red cones; affects about 1% of men; ΔE 35.9 from the original
Deuteranopia#9DADDAno green cones; the most common form, about 1% of men; ΔE 38 from the original
Tritanopia#00D1CDno blue cones; rare, and affects men and women equally; ΔE 14.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.05:1WCAG large text: Fail
Contrast with black, large text10.22:1WCAG large text: AAA

Named colours

Dark turquoise · ΔE 10.2Medium turquoise · ΔE 13.6Light seagreen · ΔE 17.1Sky blue · ΔE 19.2Turquoise · ΔE 21.5Cadetblue · ΔE 22.8
Nearest named CSS colourDark turquoise (#00CED1)ΔE 10.19, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DA2B18
Analogous#18DA8C, #1866DA
Triadic#DA18C7, #C7DA18
Split complementary#DA1866, #DA8C18
Tetradic#8C18DA, #DA2B18, #66DA18

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C5F4F9
Lighter +30%#97EBF4
Lighter +20%#69E2EF
Lighter +10%#3CD8E9
Darker −10%#139DAC
Darker −20%#0E737E
Darker −30%#094950
Darker −40%#041F22
More saturated +25%#00DAF2
Less saturated −25%#36AFBC

Channel breakdown

R24
G199
B218
Red24 (9.4%)
Green199 (78%)
Blue218 (85.5%)
Hue185.88°
Saturation (HSL)80.17%
Lightness47.45%
Dominant channelBlue
Hex per channelR 18 · G C7 · B DA

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Every value on this page was computed from “18c7da” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.