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Colour

#3F554F

  • #3F554F
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#3F554F is a cyan with RGB values 63, 85, 79 and HSL 164°, 15%, 29%. It is a dark colour, so white text on it reaches 8:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#3F554F#3F554F
HEX#3F554F
RGBrgb(63, 85, 79)
RGB (0–1)0.2471, 0.3333, 0.3098
RGB percentages24.7%, 33.3%, 31%
HSLhsl(163.6, 14.9%, 29%)
HSV / HSBhsv(163.6, 25.9%, 33.3%)
CMYK25.9%, 0%, 7.1%, 66.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,150,607
CSS custom property--colour: #3F554F;

Brightness & contrast

Relative luminance0.08118WCAG 2.x, 0 is black and 1 is white
Perceived brightness78.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8:1
Contrast with white8:1WCAG normal text: AAA
Contrast with black2.62:1WCAG normal text: Fail
Greyscale equivalent#505050
Inverted#C0AAB0

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#53524Fno red cones; affects about 1% of men; ΔE 9.7 from the original
Deuteranopia#4F4F4Fno green cones; the most common form, about 1% of men; ΔE 9.9 from the original
Tritanopia#395653no blue cones; rare, and affects men and women equally; ΔE 3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text8:1WCAG large text: AAA
Contrast with black, large text2.62:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 5.7Dim grey · ΔE 14.2Gray · ΔE 21.7Slate grey · ΔE 23.1Teal · ΔE 25.3Light slate grey · ΔE 25.9
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 5.69, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#553F45
Analogous#3F5544, #3F5055
Triadic#4F3F55, #554F3F
Split complementary#553F50, #55443F
Tetradic#443F55, #553F45, #50553F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A4BCB5
Lighter +30%#87A69E
Lighter +20%#6A9085
Lighter +10%#55726A
Darker −10%#293834
Darker −20%#141A19
Darker −30%#000000
Darker −40%#000000
More saturated +25%#2D6757
Less saturated −25%#4A4A4A

Channel breakdown

R63
G85
B79
Red63 (24.7%)
Green85 (33.3%)
Blue79 (31%)
Hue163.64°
Saturation (HSL)14.86%
Lightness29.02%
Dominant channelGreen
Hex per channelR 3F · G 55 · B 4F

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Every value on this page was computed from “3f554f” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.