Nerdulator> put something in

Recognised as Colour

#2F3439

  • #2F3439
  • Blue
  • Dark
  • Nearest: Dark slate grey

#2F3439 is a blue with RGB values 47, 52, 57 and HSL 210°, 10%, 20%. It is a dark colour, so white text on it reaches 12.6:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#2F3439#2F3439
HEX#2F3439
RGBrgb(47, 52, 57)
RGB (0–1)0.1843, 0.2039, 0.2235
RGB percentages18.4%, 20.4%, 22.4%
HSLhsl(210, 9.6%, 20.4%)
HSV / HSBhsv(210, 17.5%, 22.4%)
CMYK17.5%, 8.8%, 0%, 77.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,093,561
CSS custom property--colour: #2F3439;

Brightness & contrast

Relative luminance0.03356WCAG 2.x, 0 is black and 1 is white
Perceived brightness51.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.57:1
Contrast with white12.57:1WCAG normal text: AAA
Contrast with black1.67:1WCAG normal text: Fail
Greyscale equivalent#333333
Inverted#D0CBC6

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#323439no red cones; affects about 1% of men; ΔE 1.3 from the original
Deuteranopia#313339no green cones; the most common form, about 1% of men; ΔE 1.5 from the original
Tritanopia#2D3536no blue cones; rare, and affects men and women equally; ΔE 3.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text12.57:1WCAG large text: AAA
Contrast with black, large text1.67:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 14.7Black · ΔE 21.8Dim grey · ΔE 23.3Slate grey · ΔE 32.2Gray · ΔE 32.4Light slate grey · ΔE 35.3
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 14.65, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#39342F
Analogous#2F3939, #2F2F39
Triadic#392F34, #34392F
Split complementary#392F2F, #39392F
Tetradic#392F39, #39342F, #2F392F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#909AA4
Lighter +30%#74818D
Lighter +20%#5D6771
Lighter +10%#464E55
Darker −10%#181A1D
Darker −20%#010101
Darker −30%#000000
Darker −40%#000000
More saturated +25%#223446
Less saturated −25%#343434

Channel breakdown

R47
G52
B57
Red47 (18.4%)
Green52 (20.4%)
Blue57 (22.4%)
Hue210°
Saturation (HSL)9.62%
Lightness20.39%
Dominant channelBlue
Hex per channelR 2F · G 34 · B 39

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

Nerdulate something else

Nothing in mind? Surprise me · today’s page

Every value on this page was computed from “2f3439” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.