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Recognised as Colour

#17646B

  • #17646B
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#17646B is a cyan with RGB values 23, 100, 107 and HSL 185°, 65%, 25%. It is a dark colour, so white text on it reaches 6.8:1 contrast (AA for normal text). The nearest named colour is Dark slate grey.

Colour values

#17646B#17646B
HEX#17646B
RGBrgb(23, 100, 107)
RGB (0–1)0.0902, 0.3922, 0.4196
RGB percentages9%, 39.2%, 42%
HSLhsl(185, 64.6%, 25.5%)
HSV / HSBhsv(185, 78.5%, 42%)
CMYK78.5%, 6.5%, 0%, 58%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,533,035
CSS custom property--colour: #17646B;

Brightness & contrast

Relative luminance0.10358WCAG 2.x, 0 is black and 1 is white
Perceived brightness85.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.84:1
Contrast with white6.84:1WCAG normal text: AA
Contrast with black3.07:1WCAG normal text: Fail
Greyscale equivalent#545454
Inverted#E89B94

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5B606Cno red cones; affects about 1% of men; ΔE 20.9 from the original
Deuteranopia#50576Bno green cones; the most common form, about 1% of men; ΔE 22 from the original
Tritanopia#006866no blue cones; rare, and affects men and women equally; ΔE 7.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.84:1WCAG large text: AAA
Contrast with black, large text3.07:1WCAG large text: AA

Named colours

Dark slate grey · ΔE 12.8Teal · ΔE 13.5Dark cyan · ΔE 17.6Slate grey · ΔE 22.7Cadetblue · ΔE 22.9Dim grey · ΔE 23.2
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 12.76, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#6B1E17
Analogous#176B48, #173A6B
Triadic#6B1764, #646B17
Split complementary#6B173A, #6B4817
Tetradic#48176B, #6B1E17, #3A6B17

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#6ED6E0
Lighter +30%#44CBD7
Lighter +20%#29B2BF
Lighter +10%#208B95
Darker −10%#0E3D41
Darker −20%#051617
Darker −30%#000000
Darker −40%#000000
More saturated +25%#07727B
Less saturated −25%#27565B

Channel breakdown

R23
G100
B107
Red23 (9%)
Green100 (39.2%)
Blue107 (42%)
Hue185°
Saturation (HSL)64.62%
Lightness25.49%
Dominant channelBlue
Hex per channelR 17 · G 64 · B 6B

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Every value on this page was computed from “17646b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.