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Recognised as Colour

#3B4347

  • #3B4347
  • Blue
  • Dark
  • Nearest: Dark slate grey

#3B4347 is a blue with RGB values 59, 67, 71 and HSL 200°, 9%, 25%. It is a dark colour, so white text on it reaches 10.1:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#3B4347#3B4347
HEX#3B4347
RGBrgb(59, 67, 71)
RGB (0–1)0.2314, 0.2627, 0.2784
RGB percentages23.1%, 26.3%, 27.8%
HSLhsl(200, 9.2%, 25.5%)
HSV / HSBhsv(200, 16.9%, 27.8%)
CMYK16.9%, 5.6%, 0%, 72.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,883,847
CSS custom property--colour: #3B4347;

Brightness & contrast

Relative luminance0.05399WCAG 2.x, 0 is black and 1 is white
Perceived brightness65.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.1:1
Contrast with white10.1:1WCAG normal text: AAA
Contrast with black2.08:1WCAG normal text: Fail
Greyscale equivalent#424242
Inverted#C4BCB8

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#414347no red cones; affects about 1% of men; ΔE 2.6 from the original
Deuteranopia#3F4147no green cones; the most common form, about 1% of men; ΔE 2.9 from the original
Tritanopia#384444no blue cones; rare, and affects men and women equally; ΔE 3.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text10.1:1WCAG large text: AAA
Contrast with black, large text2.08:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 10Dim grey · ΔE 17.1Slate grey · ΔE 26Gray · ΔE 26.1Black · ΔE 28.2Light slate grey · ΔE 29.1
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 10.04, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#473F3B
Analogous#3B4745, #3B3D47
Triadic#473B43, #43473B
Split complementary#473B3D, #47453B
Tetradic#453B47, #473F3B, #3D473B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9FAAAF
Lighter +30%#839198
Lighter +20%#69787F
Lighter +10%#525D63
Darker −10%#24292B
Darker −20%#0D0E0F
Darker −30%#000000
Darker −40%#000000
More saturated +25%#2B4857
Less saturated −25%#414141

Channel breakdown

R59
G67
B71
Red59 (23.1%)
Green67 (26.3%)
Blue71 (27.8%)
Hue200°
Saturation (HSL)9.23%
Lightness25.49%
Dominant channelBlue
Hex per channelR 3B · G 43 · B 47

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Every value on this page was computed from “3b4347” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.