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Recognised as Colour

#185B59

  • #185B59
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#185B59 is a cyan with RGB values 24, 91, 89 and HSL 178°, 58%, 23%. It is a dark colour, so white text on it reaches 7.8:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#185B59#185B59
HEX#185B59
RGBrgb(24, 91, 89)
RGB (0–1)0.0941, 0.3569, 0.349
RGB percentages9.4%, 35.7%, 34.9%
HSLhsl(178.2, 58.3%, 22.5%)
HSV / HSBhsv(178.2, 73.6%, 35.7%)
CMYK73.6%, 0%, 2.2%, 64.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,596,249
CSS custom property--colour: #185B59;

Brightness & contrast

Relative luminance0.08398WCAG 2.x, 0 is black and 1 is white
Perceived brightness77 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.84:1
Contrast with white7.84:1WCAG normal text: AAA
Contrast with black2.68:1WCAG normal text: Fail
Greyscale equivalent#4D4D4D
Inverted#E7A4A6

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#555659no red cones; affects about 1% of men; ΔE 21.3 from the original
Deuteranopia#4B4F5Ano green cones; the most common form, about 1% of men; ΔE 21.9 from the original
Tritanopia#005E5Ano blue cones; rare, and affects men and women equally; ΔE 3.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text7.84:1WCAG large text: AAA
Contrast with black, large text2.68:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 9.8Teal · ΔE 16.1Dark cyan · ΔE 20.4Dim grey · ΔE 23.4Cadetblue · ΔE 26.5Slate grey · ΔE 26.5
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 9.77, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#5B181A
Analogous#185B37, #183C5B
Triadic#59185B, #5B5918
Split complementary#5B183B, #5B3718
Tetradic#38185B, #5B181A, #3C5B18

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#68D7D4
Lighter +30%#40CCC8
Lighter +20%#2DACA8
Lighter +10%#238380
Darker −10%#0D3332
Darker −20%#030A0A
Darker −30%#000000
Darker −40%#000000
More saturated +25%#0A6967
Less saturated −25%#264D4B

Channel breakdown

R24
G91
B89
Red24 (9.4%)
Green91 (35.7%)
Blue89 (34.9%)
Hue178.21°
Saturation (HSL)58.26%
Lightness22.55%
Dominant channelGreen
Hex per channelR 18 · G 5B · B 59

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Every value on this page was computed from “185b59” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.