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Recognised as Colour

#3F665A

  • #3F665A
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#3F665A is a cyan with RGB values 63, 102, 90 and HSL 162°, 24%, 32%. It is a dark colour, so white text on it reaches 6.4:1 contrast (AA for normal text). The nearest named colour is Dark slate grey.

Colour values

#3F665A#3F665A
HEX#3F665A
RGBrgb(63, 102, 90)
RGB (0–1)0.2471, 0.4, 0.3529
RGB percentages24.7%, 40%, 35.3%
HSLhsl(161.5, 23.6%, 32.4%)
HSV / HSBhsv(161.5, 38.2%, 40%)
CMYK38.2%, 0%, 11.8%, 60%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,154,970
CSS custom property--colour: #3F665A;

Brightness & contrast

Relative luminance0.11298WCAG 2.x, 0 is black and 1 is white
Perceived brightness90.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.44:1
Contrast with white6.44:1WCAG normal text: AA
Contrast with black3.26:1WCAG normal text: Fail
Greyscale equivalent#5D5D5D
Inverted#C099A5

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#646159no red cones; affects about 1% of men; ΔE 16.7 from the original
Deuteranopia#5D5C5Bno green cones; the most common form, about 1% of men; ΔE 17.1 from the original
Tritanopia#346762no blue cones; rare, and affects men and women equally; ΔE 5.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text6.44:1WCAG large text: AAA
Contrast with black, large text3.26:1WCAG large text: AA

Named colours

Dark slate grey · ΔE 11.9Dim grey · ΔE 17.6Teal · ΔE 18.2Dark cyan · ΔE 21.6Gray · ΔE 21.7Slate grey · ΔE 23.4
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 11.91, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#663F4B
Analogous#3F6646, #3F5E66
Triadic#5A3F66, #665A3F
Split complementary#663F5E, #66463F
Tetradic#463F66, #663F4B, #5E663F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A8C9BF
Lighter +30%#88B6A8
Lighter +20%#69A291
Lighter +10%#528676
Darker −10%#2C463E
Darker −20%#182722
Darker −30%#050707
Darker −40%#000000
More saturated +25%#2A7B62
Less saturated −25%#525252

Channel breakdown

R63
G102
B90
Red63 (24.7%)
Green102 (40%)
Blue90 (35.3%)
Hue161.54°
Saturation (HSL)23.64%
Lightness32.35%
Dominant channelGreen
Hex per channelR 3F · G 66 · B 5A

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Every value on this page was computed from “3f665a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.