Colour

#18EFD8

#18EFD8
Cyan
Light
Nearest: Turquoise

#18EFD8 is a cyan with RGB values 24, 239, 216 and HSL 174°, 87%, 52%. It is a light colour, so black text on it reaches 14.4:1 contrast (AAA for normal text). The nearest named colour is Turquoise.

Colour values

#18EFD8#18EFD8

HEX#18EFD8

RGBrgb(24, 239, 216)

RGB (0–1)0.0941, 0.9373, 0.8471

RGB percentages9.4%, 93.7%, 84.7%

HSLhsl(173.6, 87%, 51.6%)

HSV / HSBhsv(173.6, 90%, 93.7%)

CMYK90%, 0%, 9.6%, 6.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer1,634,264

CSS custom property--colour: #18EFD8;

Brightness & contrast

Relative luminance0.66885WCAG 2.x, 0 is black and 1 is white

Perceived brightness197.5 of 255ITU-R BT.601 weighting

Light or darkLight

Best text colour on this backgroundBlackcontrast 14.38:1

Contrast with white1.46:1WCAG normal text: Fail

Contrast with black14.38:1WCAG normal text: AAA

Greyscale equivalent#C0C0C0

Inverted#E71027

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#E3E0D7no red cones; affects about 1% of men; ΔE 51.6 from the original

Deuteranopia#CACEDAno green cones; the most common form, about 1% of men; ΔE 52.7 from the original

Tritanopia#00F4E8no blue cones; rare, and affects men and women equally; ΔE 6.2 from the original

Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning

Contrast with white, large text1.46:1WCAG large text: Fail

Contrast with black, large text14.38:1WCAG large text: AAA

Named colours

Turquoise · ΔE 8.8 Aqua · ΔE 13.7 Cyan · ΔE 13.7 Aquamarine · ΔE 14.9 Medium turquoise · ΔE 17.7 Dark turquoise · ΔE 19.1

Nearest named CSS colourTurquoise (#40E0D0)ΔE 8.76, clearly different but related

Hue familycyan

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#EF182F

Analogous#18EF6C, #189BEF

Triadic#D818EF, #EFD818

Split complementary#EF189A, #EF6C18

Tetradic#6C18EF, #EF182F, #9BEF18

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#D7FCF8

Lighter +30%#A7F9F0

Lighter +20%#77F6E8

Lighter +10%#48F2E0

Darker −10%#0EC6B3

Darker −20%#0A9788

Darker −30%#07675D

Darker −40%#043732

More saturated +25%#08FFE5

Less saturated −25%#37D0C0

Channel breakdown

R24

G239

B216

Red24 (9.4%)

Green239 (93.7%)

Blue216 (84.7%)

Hue173.58°

Saturation (HSL)87.04%

Lightness51.57%

Dominant channelGreen

Hex per channelR 18 · G EF · B D8

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

#18EFD8

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

Nerdulate something else