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Recognised as Colour

#2B3D91

  • #2B3D91
  • Blue
  • Dark
  • Nearest: Dark slateblue

#2B3D91 is a blue with RGB values 43, 61, 145 and HSL 229°, 54%, 37%. It is a dark colour, so white text on it reaches 9.6:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#2B3D91#2B3D91
HEX#2B3D91
RGBrgb(43, 61, 145)
RGB (0–1)0.1686, 0.2392, 0.5686
RGB percentages16.9%, 23.9%, 56.9%
HSLhsl(229.4, 54.3%, 36.9%)
HSV / HSBhsv(229.4, 70.3%, 56.9%)
CMYK70.3%, 57.9%, 0%, 43.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,833,809
CSS custom property--colour: #2B3D91;

Brightness & contrast

Relative luminance0.05895WCAG 2.x, 0 is black and 1 is white
Perceived brightness71.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.64:1
Contrast with white9.64:1WCAG normal text: AAA
Contrast with black2.18:1WCAG normal text: Fail
Greyscale equivalent#3F3F3F
Inverted#D4C26E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#004A94no red cones; affects about 1% of men; ΔE 12.2 from the original
Deuteranopia#00408Fno green cones; the most common form, about 1% of men; ΔE 6.9 from the original
Tritanopia#005261no blue cones; rare, and affects men and women equally; ΔE 50.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text9.64:1WCAG large text: AAA
Contrast with black, large text2.18:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 7.6Midnight blue · ΔE 16.2Rebecca purple · ΔE 20.8Slate blue · ΔE 23Royal blue · ΔE 25.3Medium purple · ΔE 29.6
Nearest named CSS colourDark slateblue (#483D8B)ΔE 7.64, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#917F2B
Analogous#2B7091, #4C2B91
Triadic#912B3D, #3D912B
Split complementary#914C2B, #70912B
Tetradic#912B70, #917F2B, #2B914C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A4AFE4
Lighter +30%#7D8DD8
Lighter +20%#556ACD
Lighter +10%#374EB8
Darker −10%#1F2C6A
Darker −20%#141C42
Darker −30%#080B1B
Darker −40%#000000
More saturated +25%#142EA9
Less saturated −25%#434C7A

Channel breakdown

R43
G61
B145
Red43 (16.9%)
Green61 (23.9%)
Blue145 (56.9%)
Hue229.41°
Saturation (HSL)54.26%
Lightness36.86%
Dominant channelBlue
Hex per channelR 2B · G 3D · B 91

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Every value on this page was computed from “2b3d91” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.