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Recognised as Colour

#18CCE3

  • #18CCE3
  • Cyan
  • Dark
  • Nearest: Dark turquoise

#18CCE3 is a cyan with RGB values 24, 204, 227 and HSL 187°, 81%, 49%. It is a dark colour, so black text on it reaches 10.8:1 contrast (AAA for normal text). The nearest named colour is Dark turquoise.

Colour values

#18CCE3#18CCE3
HEX#18CCE3
RGBrgb(24, 204, 227)
RGB (0–1)0.0941, 0.8, 0.8902
RGB percentages9.4%, 80%, 89%
HSLhsl(186.8, 80.9%, 49.2%)
HSV / HSBhsv(186.8, 89.4%, 89%)
CMYK89.4%, 10.1%, 0%, 11%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,625,315
CSS custom property--colour: #18CCE3;

Brightness & contrast

Relative luminance0.48926WCAG 2.x, 0 is black and 1 is white
Perceived brightness174.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 10.79:1
Contrast with white1.95:1WCAG normal text: Fail
Contrast with black10.79:1WCAG normal text: AAA
Greyscale equivalent#A7A7A7
Inverted#E7331C

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#B8C4E4no red cones; affects about 1% of men; ΔE 36 from the original
Deuteranopia#9FB2E3no green cones; the most common form, about 1% of men; ΔE 37.6 from the original
Tritanopia#00D6D3no blue cones; rare, and affects men and women equally; ΔE 16 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text1.95:1WCAG large text: Fail
Contrast with black, large text10.79:1WCAG large text: AAA

Named colours

Dark turquoise · ΔE 12Medium turquoise · ΔE 15.5Sky blue · ΔE 18.4Light seagreen · ΔE 19.9Turquoise · ΔE 22.9Light skyblue · ΔE 23
Nearest named CSS colourDark turquoise (#00CED1)ΔE 11.98, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#E32F18
Analogous#18E395, #1866E3
Triadic#E318CC, #CCE318
Split complementary#E31867, #E39518
Tetradic#9418E3, #E32F18, #67E318

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#CDF5FA
Lighter +30%#9FEBF5
Lighter +20%#71E2F0
Lighter +10%#43D8EB
Darker −10%#13A3B5
Darker −20%#0E7987
Darker −30%#095059
Darker −40%#04262B
More saturated +25%#00DFFB
Less saturated −25%#37B4C4

Channel breakdown

R24
G204
B227
Red24 (9.4%)
Green204 (80%)
Blue227 (89%)
Hue186.8°
Saturation (HSL)80.88%
Lightness49.22%
Dominant channelBlue
Hex per channelR 18 · G CC · B E3

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Every value on this page was computed from “18cce3” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.