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Colour

#2D3139

  • #2D3139
  • Blue
  • Dark
  • Nearest: Dark slate grey

#2D3139 is a blue with RGB values 45, 49, 57 and HSL 220°, 12%, 20%. It is a dark colour, so white text on it reaches 13:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#2D3139#2D3139
HEX#2D3139
RGBrgb(45, 49, 57)
RGB (0–1)0.1765, 0.1922, 0.2235
RGB percentages17.6%, 19.2%, 22.4%
HSLhsl(220, 11.8%, 20%)
HSV / HSBhsv(220, 21.1%, 22.4%)
CMYK21.1%, 14%, 0%, 77.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,961,721
CSS custom property--colour: #2D3139;

Brightness & contrast

Relative luminance0.0305WCAG 2.x, 0 is black and 1 is white
Perceived brightness48.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.04:1
Contrast with white13.04:1WCAG normal text: AAA
Contrast with black1.61:1WCAG normal text: Fail
Greyscale equivalent#313131
Inverted#D2CEC6

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#2F3139no red cones; affects about 1% of men; ΔE 0.9 from the original
Deuteranopia#2D3039no green cones; the most common form, about 1% of men; ΔE 0.9 from the original
Tritanopia#2A3334no blue cones; rare, and affects men and women equally; ΔE 5.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text13.04:1WCAG large text: AAA
Contrast with black, large text1.61:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 16.5Black · ΔE 21Dim grey · ΔE 24.8Slate grey · ΔE 33.1Gray · ΔE 33.8Light slate grey · ΔE 36.2
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 16.46, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#39352D
Analogous#2D3739, #2F2D39
Triadic#392D31, #31392D
Split complementary#392F2D, #37392D
Tetradic#392D37, #39352D, #2D392F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8D95A5
Lighter +30%#717B8F
Lighter +20%#5A6272
Lighter +10%#444A56
Darker −10%#17191C
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#202D46
Less saturated −25%#333333

Channel breakdown

R45
G49
B57
Red45 (17.6%)
Green49 (19.2%)
Blue57 (22.4%)
Hue220°
Saturation (HSL)11.76%
Lightness20%
Dominant channelBlue
Hex per channelR 2D · G 31 · B 39

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Every value on this page was computed from “2d3139” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.