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Recognised as Colour

#18554A

  • #18554A
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#18554A is a cyan with RGB values 24, 85, 74 and HSL 169°, 56%, 21%. It is a dark colour, so white text on it reaches 8.6:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#18554A#18554A
HEX#18554A
RGBrgb(24, 85, 74)
RGB (0–1)0.0941, 0.3333, 0.2902
RGB percentages9.4%, 33.3%, 29%
HSLhsl(169.2, 56%, 21.4%)
HSV / HSBhsv(169.2, 71.8%, 33.3%)
CMYK71.8%, 0%, 12.9%, 66.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,594,698
CSS custom property--colour: #18554A;

Brightness & contrast

Relative luminance0.07186WCAG 2.x, 0 is black and 1 is white
Perceived brightness71 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.62:1
Contrast with white8.62:1WCAG normal text: AAA
Contrast with black2.44:1WCAG normal text: Fail
Greyscale equivalent#474747
Inverted#E7AAB5

Colour vision & accessibility

Protanopia#51504Ano red cones; affects about 1% of men; ΔE 21.7 from the original
Deuteranopia#49494Bno green cones; the most common form, about 1% of men; ΔE 22.8 from the original
Tritanopia#005652no blue cones; rare, and affects men and women equally; ΔE 4.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text8.62:1WCAG large text: AAA
Contrast with black, large text2.44:1WCAG large text: Fail

Named colours

Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 11.51, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

Complementary#551823
Analogous#18552C, #184155
Triadic#4A1855, #554A18
Split complementary#551841, #552C18
Tetradic#2C1855, #551823, #415518

Tints, shades & saturation

Lighter +40%#65D4C0
Lighter +30%#3EC8AF
Lighter +20%#2EA58F
Lighter +10%#237D6D
Darker −10%#0D2D27
Darker −20%#020505
Darker −30%#000000
Darker −40%#000000
More saturated +25%#0A6353
Less saturated −25%#264741

Channel breakdown

R24
G85
B74
Red24 (9.4%)
Green85 (33.3%)
Blue74 (29%)
Hue169.18°
Saturation (HSL)55.96%
Lightness21.37%
Dominant channelGreen
Hex per channelR 18 · G 55 · B 4A

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Every value on this page was computed from “18554a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.