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Recognised as Colour

#2F4040

  • #2F4040
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#2F4040 is a cyan with RGB values 47, 64, 64 and HSL 180°, 15%, 22%. It is a dark colour, so white text on it reaches 10.9:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#2F4040#2F4040
HEX#2F4040
RGBrgb(47, 64, 64)
RGB (0–1)0.1843, 0.251, 0.251
RGB percentages18.4%, 25.1%, 25.1%
HSLhsl(180, 15.3%, 21.8%)
HSV / HSBhsv(180, 26.6%, 25.1%)
CMYK26.6%, 0%, 0%, 74.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,096,640
CSS custom property--colour: #2F4040;

Brightness & contrast

Relative luminance0.04641WCAG 2.x, 0 is black and 1 is white
Perceived brightness59.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.89:1
Contrast with white10.89:1WCAG normal text: AAA
Contrast with black1.93:1WCAG normal text: Fail
Greyscale equivalent#3C3C3C
Inverted#D0BFBF

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3E3E40no red cones; affects about 1% of men; ΔE 7.3 from the original
Deuteranopia#3A3C40no green cones; the most common form, about 1% of men; ΔE 6.9 from the original
Tritanopia#294140no blue cones; rare, and affects men and women equally; ΔE 2.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text10.89:1WCAG large text: AAA
Contrast with black, large text1.93:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 7.6Dim grey · ΔE 20Black · ΔE 26.7Slate grey · ΔE 28.8Gray · ΔE 28.8Light slate grey · ΔE 31.8
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 7.6, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#402F2F
Analogous#2F4038, #2F3840
Triadic#402F40, #40402F
Split complementary#402F38, #40382F
Tetradic#382F40, #402F2F, #38402F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8FACAC
Lighter +30%#719797
Lighter +20%#5A7B7B
Lighter +10%#455D5D
Darker −10%#192323
Darker −20%#040505
Darker −30%#000000
Darker −40%#000000
More saturated +25%#214E4E
Less saturated −25%#383838

Channel breakdown

R47
G64
B64
Red47 (18.4%)
Green64 (25.1%)
Blue64 (25.1%)
Hue180°
Saturation (HSL)15.32%
Lightness21.76%
Dominant channelGreen and Blue
Hex per channelR 2F · G 40 · B 40

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Every value on this page was computed from “2f4040” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.