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Colour

#2A3148

  • #2A3148
  • Blue
  • Dark
  • Nearest: Dark slate grey

#2A3148 is a blue with RGB values 42, 49, 72 and HSL 226°, 26%, 22%. It is a dark colour, so white text on it reaches 12.9:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#2A3148#2A3148
HEX#2A3148
RGBrgb(42, 49, 72)
RGB (0–1)0.1647, 0.1922, 0.2824
RGB percentages16.5%, 19.2%, 28.2%
HSLhsl(226, 26.3%, 22.4%)
HSV / HSBhsv(226, 41.7%, 28.2%)
CMYK41.7%, 31.9%, 0%, 71.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,765,128
CSS custom property--colour: #2A3148;

Brightness & contrast

Relative luminance0.03157WCAG 2.x, 0 is black and 1 is white
Perceived brightness50.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.87:1
Contrast with white12.87:1WCAG normal text: AAA
Contrast with black1.63:1WCAG normal text: Fail
Greyscale equivalent#313131
Inverted#D5CEB7

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#293349no red cones; affects about 1% of men; ΔE 1.5 from the original
Deuteranopia#273147no green cones; the most common form, about 1% of men; ΔE 1.4 from the original
Tritanopia#213639no blue cones; rare, and affects men and women equally; ΔE 15.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text12.87:1WCAG large text: AAA
Contrast with black, large text1.63:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 22Black · ΔE 26Dim grey · ΔE 28.5Slate grey · ΔE 33.1Light slate grey · ΔE 36Dark slateblue · ΔE 36.3
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 22.04, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#48412A
Analogous#2A4048, #322A48
Triadic#482A31, #31482A
Split complementary#48322A, #40482A
Tetradic#482A40, #48412A, #2A4832

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8692B8
Lighter +30%#6674A5
Lighter +20%#505D88
Lighter +10%#3D4768
Darker −10%#171B28
Darker −20%#040508
Darker −30%#000000
Darker −40%#000000
More saturated +25%#1C2956
Less saturated −25%#38393A

Channel breakdown

R42
G49
B72
Red42 (16.5%)
Green49 (19.2%)
Blue72 (28.2%)
Hue226°
Saturation (HSL)26.32%
Lightness22.35%
Dominant channelBlue
Hex per channelR 2A · G 31 · B 48

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Every value on this page was computed from “2a3148” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.