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Recognised as Colour

#2B5497

  • #2B5497
  • Blue
  • Dark
  • Nearest: Dark slateblue

#2B5497 is a blue with RGB values 43, 84, 151 and HSL 217°, 56%, 38%. It is a dark colour, so white text on it reaches 7.5:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#2B5497#2B5497
HEX#2B5497
RGBrgb(43, 84, 151)
RGB (0–1)0.1686, 0.3294, 0.5922
RGB percentages16.9%, 32.9%, 59.2%
HSLhsl(217.2, 55.7%, 38%)
HSV / HSBhsv(217.2, 71.5%, 59.2%)
CMYK71.5%, 44.4%, 0%, 40.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,839,703
CSS custom property--colour: #2B5497;

Brightness & contrast

Relative luminance0.09089WCAG 2.x, 0 is black and 1 is white
Perceived brightness85.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.45:1
Contrast with white7.45:1WCAG normal text: AAA
Contrast with black2.82:1WCAG normal text: Fail
Greyscale equivalent#505050
Inverted#D4AB68

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#335A9Ano red cones; affects about 1% of men; ΔE 3.3 from the original
Deuteranopia#205096no green cones; the most common form, about 1% of men; ΔE 2.8 from the original
Tritanopia#00646Eno blue cones; rare, and affects men and women equally; ΔE 41.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text7.45:1WCAG large text: AAA
Contrast with black, large text2.82:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 17.6Steel blue · ΔE 22.8Cornflower blue · ΔE 27.1Midnight blue · ΔE 31.5Royal blue · ΔE 31.9Dodgerblue · ΔE 32.3
Nearest named CSS colourDark slateblue (#483D8B)ΔE 17.64, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#976E2B
Analogous#2B8A97, #382B97
Triadic#972B54, #54972B
Split complementary#97382B, #8A972B
Tetradic#972B8A, #976E2B, #2B9738

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A8BFE6
Lighter +30%#80A3DB
Lighter +20%#5886D0
Lighter +10%#366ABF
Darker −10%#203E6F
Darker −20%#142848
Darker −30%#091220
Darker −40%#000000
More saturated +25%#134EAF
Less saturated −25%#435A7F

Channel breakdown

R43
G84
B151
Red43 (16.9%)
Green84 (32.9%)
Blue151 (59.2%)
Hue217.22°
Saturation (HSL)55.67%
Lightness38.04%
Dominant channelBlue
Hex per channelR 2B · G 54 · B 97

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Every value on this page was computed from “2b5497” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.