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Recognised as Colour

#18A9BC

  • #18A9BC
  • Cyan
  • Dark
  • Nearest: Cadetblue

#18A9BC is a cyan with RGB values 24, 169, 188 and HSL 187°, 77%, 42%. It is a dark colour, so black text on it reaches 7.4:1 contrast (AAA for normal text). The nearest named colour is Cadetblue.

Colour values

#18A9BC#18A9BC
HEX#18A9BC
RGBrgb(24, 169, 188)
RGB (0–1)0.0941, 0.6627, 0.7373
RGB percentages9.4%, 66.3%, 73.7%
HSLhsl(187, 77.4%, 41.6%)
HSV / HSBhsv(187, 87.2%, 73.7%)
CMYK87.2%, 10.1%, 0%, 26.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,616,316
CSS custom property--colour: #18A9BC;

Brightness & contrast

Relative luminance0.32201WCAG 2.x, 0 is black and 1 is white
Perceived brightness144.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 7.44:1
Contrast with white2.82:1WCAG normal text: Fail
Contrast with black7.44:1WCAG normal text: AAA
Greyscale equivalent#8C8C8C
Inverted#E75643

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#98A2BDno red cones; affects about 1% of men; ΔE 31 from the original
Deuteranopia#8493BCno green cones; the most common form, about 1% of men; ΔE 32.7 from the original
Tritanopia#00B2AFno blue cones; rare, and affects men and women equally; ΔE 14.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.82:1WCAG large text: Fail
Contrast with black, large text7.44:1WCAG large text: AAA

Named colours

Cadetblue · ΔE 15.2Dark cyan · ΔE 15.8Light seagreen · ΔE 16.5Dark turquoise · ΔE 17.8Teal · ΔE 19Medium turquoise · ΔE 19.8
Nearest named CSS colourCadetblue (#5F9EA0)ΔE 15.24, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BC2B18
Analogous#18BC7D, #1857BC
Triadic#BC18A9, #A9BC18
Split complementary#BC1857, #BC7D18
Tetradic#7D18BC, #BC2B18, #57BC18

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#ACECF4
Lighter +30%#7EE2EF
Lighter +20%#51D7E9
Lighter +10%#24CDE3
Darker −10%#12808F
Darker −20%#0C5862
Darker −30%#072F34
Darker −40%#010607
More saturated +25%#00BBD4
Less saturated −25%#3395A2

Channel breakdown

R24
G169
B188
Red24 (9.4%)
Green169 (66.3%)
Blue188 (73.7%)
Hue186.95°
Saturation (HSL)77.36%
Lightness41.57%
Dominant channelBlue
Hex per channelR 18 · G A9 · B BC

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Every value on this page was computed from “18a9bc” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.