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Recognised as Colour

#2533BD

  • #2533BD
  • Blue
  • Dark
  • Nearest: Dark blue

#2533BD is a blue with RGB values 37, 51, 189 and HSL 234°, 67%, 44%. It is a dark colour, so white text on it reaches 9.2:1 contrast (AAA for normal text). The nearest named colour is Dark blue.

Colour values

#2533BD#2533BD
HEX#2533BD
RGBrgb(37, 51, 189)
RGB (0–1)0.1451, 0.2, 0.7412
RGB percentages14.5%, 20%, 74.1%
HSLhsl(234.5, 67.3%, 44.3%)
HSV / HSBhsv(234.5, 80.4%, 74.1%)
CMYK80.4%, 73%, 0%, 25.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,438,077
CSS custom property--colour: #2533BD;

Brightness & contrast

Relative luminance0.06435WCAG 2.x, 0 is black and 1 is white
Perceived brightness77.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.18:1
Contrast with white9.18:1WCAG normal text: AAA
Contrast with black2.29:1WCAG normal text: Fail
Greyscale equivalent#3A3A3A
Inverted#DACC42

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#004FC1no red cones; affects about 1% of men; ΔE 20.9 from the original
Deuteranopia#0040BBno green cones; the most common form, about 1% of men; ΔE 11.6 from the original
Tritanopia#005B75no blue cones; rare, and affects men and women equally; ΔE 77.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.18:1WCAG large text: AAA
Contrast with black, large text2.29:1WCAG large text: Fail

Named colours

Dark blue · ΔE 17.4Navy · ΔE 19.6Slate blue · ΔE 22.7Medium slateblue · ΔE 23.2Indigo · ΔE 23.2Rebecca purple · ΔE 25.9
Nearest named CSS colourDark blue (#00008B)ΔE 17.41, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BDAF25
Analogous#257FBD, #6325BD
Triadic#BD2533, #33BD25
Split complementary#BD6325, #7FBD25
Tetradic#BD257F, #BDAF25, #25BD63

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#BCC1F2
Lighter +30%#919AEA
Lighter +20%#6772E1
Lighter +10%#3C4BD9
Darker −10%#1D2792
Darker −20%#141C68
Darker −30%#0C103D
Darker −40%#040512
More saturated +25%#091CD9
Less saturated −25%#414AA1

Channel breakdown

R37
G51
B189
Red37 (14.5%)
Green51 (20%)
Blue189 (74.1%)
Hue234.47°
Saturation (HSL)67.26%
Lightness44.31%
Dominant channelBlue
Hex per channelR 25 · G 33 · B BD

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Every value on this page was computed from “2533bd” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.