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Recognised as Colour

#2B3039

  • #2B3039
  • Blue
  • Dark
  • Nearest: Dark slate grey

#2B3039 is a blue with RGB values 43, 48, 57 and HSL 219°, 14%, 20%. It is a dark colour, so white text on it reaches 13.3:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#2B3039#2B3039
HEX#2B3039
RGBrgb(43, 48, 57)
RGB (0–1)0.1686, 0.1882, 0.2235
RGB percentages16.9%, 18.8%, 22.4%
HSLhsl(218.6, 14%, 19.6%)
HSV / HSBhsv(218.6, 24.6%, 22.4%)
CMYK24.6%, 15.8%, 0%, 77.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,830,393
CSS custom property--colour: #2B3039;

Brightness & contrast

Relative luminance0.02923WCAG 2.x, 0 is black and 1 is white
Perceived brightness47.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.25:1
Contrast with white13.25:1WCAG normal text: AAA
Contrast with black1.58:1WCAG normal text: Fail
Greyscale equivalent#303030
Inverted#D4CFC6

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#2D3039no red cones; affects about 1% of men; ΔE 0.9 from the original
Deuteranopia#2C2F39no green cones; the most common form, about 1% of men; ΔE 1.2 from the original
Tritanopia#273233no blue cones; rare, and affects men and women equally; ΔE 6.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text13.25:1WCAG large text: AAA
Contrast with black, large text1.58:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 16.8Black · ΔE 20.8Dim grey · ΔE 25.5Slate grey · ΔE 33.4Gray · ΔE 34.5Light slate grey · ΔE 36.6
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 16.83, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#39342B
Analogous#2B3739, #2D2B39
Triadic#392B30, #30392B
Split complementary#392D2B, #37392B
Tetradic#392B37, #39342B, #2B392D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8A94A6
Lighter +30%#6D7990
Lighter +20%#576173
Lighter +10%#414856
Darker −10%#15181C
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#1F2C46
Less saturated −25%#323232

Channel breakdown

R43
G48
B57
Red43 (16.9%)
Green48 (18.8%)
Blue57 (22.4%)
Hue218.57°
Saturation (HSL)14%
Lightness19.61%
Dominant channelBlue
Hex per channelR 2B · G 30 · B 39

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Every value on this page was computed from “2b3039” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.