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Recognised as Colour

#2F4240

  • #2F4240
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#2F4240 is a cyan with RGB values 47, 66, 64 and HSL 174°, 17%, 22%. It is a dark colour, so white text on it reaches 10.6:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#2F4240#2F4240
HEX#2F4240
RGBrgb(47, 66, 64)
RGB (0–1)0.1843, 0.2588, 0.251
RGB percentages18.4%, 25.9%, 25.1%
HSLhsl(173.7, 16.8%, 22.2%)
HSV / HSBhsv(173.7, 28.8%, 25.9%)
CMYK28.8%, 0%, 3%, 74.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,097,152
CSS custom property--colour: #2F4240;

Brightness & contrast

Relative luminance0.04871WCAG 2.x, 0 is black and 1 is white
Perceived brightness60.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.64:1
Contrast with white10.64:1WCAG normal text: AAA
Contrast with black1.97:1WCAG normal text: Fail
Greyscale equivalent#3E3E3E
Inverted#D0BDBF

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#404040no red cones; affects about 1% of men; ΔE 8.2 from the original
Deuteranopia#3C3D40no green cones; the most common form, about 1% of men; ΔE 8.4 from the original
Tritanopia#294341no blue cones; rare, and affects men and women equally; ΔE 2.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text10.64:1WCAG large text: AAA
Contrast with black, large text1.97:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 6.6Dim grey · ΔE 19.8Black · ΔE 27.6Gray · ΔE 28.4Slate grey · ΔE 28.7Teal · ΔE 31.1
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 6.62, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#422F31
Analogous#2F4237, #2F3A42
Triadic#402F42, #42402F
Split complementary#422F3A, #42372F
Tetradic#372F42, #422F31, #3B422F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8EAFAB
Lighter +30%#709A95
Lighter +20%#597E7A
Lighter +10%#44605D
Darker −10%#1A2423
Darker −20%#050606
Darker −30%#000000
Darker −40%#000000
More saturated +25%#21504B
Less saturated −25%#393939

Channel breakdown

R47
G66
B64
Red47 (18.4%)
Green66 (25.9%)
Blue64 (25.1%)
Hue173.68°
Saturation (HSL)16.81%
Lightness22.16%
Dominant channelGreen
Hex per channelR 2F · G 42 · B 40

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Every value on this page was computed from “2f4240” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.