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Recognised as Colour

#253CB9

  • #253CB9
  • Blue
  • Dark
  • Nearest: Slate blue

#253CB9 is a blue with RGB values 37, 60, 185 and HSL 231°, 67%, 44%. It is a dark colour, so white text on it reaches 8.7:1 contrast (AAA for normal text). The nearest named colour is Slate blue.

Colour values

#253CB9#253CB9
HEX#253CB9
RGBrgb(37, 60, 185)
RGB (0–1)0.1451, 0.2353, 0.7255
RGB percentages14.5%, 23.5%, 72.5%
HSLhsl(230.7, 66.7%, 43.5%)
HSV / HSBhsv(230.7, 80%, 72.5%)
CMYK80%, 67.6%, 0%, 27.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,440,377
CSS custom property--colour: #253CB9;

Brightness & contrast

Relative luminance0.07128WCAG 2.x, 0 is black and 1 is white
Perceived brightness80.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.66:1
Contrast with white8.66:1WCAG normal text: AAA
Contrast with black2.43:1WCAG normal text: Fail
Greyscale equivalent#404040
Inverted#DAC346

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0053BDno red cones; affects about 1% of men; ΔE 17.8 from the original
Deuteranopia#0044B7no green cones; the most common form, about 1% of men; ΔE 8.4 from the original
Tritanopia#005E75no blue cones; rare, and affects men and women equally; ΔE 71.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text8.66:1WCAG large text: AAA
Contrast with black, large text2.43:1WCAG large text: Fail

Named colours

Slate blue · ΔE 16.7Royal blue · ΔE 19.4Medium slateblue · ΔE 20.6Rebecca purple · ΔE 21.5Dark blue · ΔE 21.7Navy · ΔE 21.9
Nearest named CSS colourSlate blue (#6A5ACD)ΔE 16.71, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B9A225
Analogous#2586B9, #5825B9
Triadic#B9253C, #3CB925
Split complementary#B95825, #86B925
Tetradic#B92586, #B9A225, #25B958

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B9C2F1
Lighter +30%#8F9CE9
Lighter +20%#6477E0
Lighter +10%#3A52D7
Darker −10%#1D2E8F
Darker −20%#142064
Darker −30%#0C133A
Darker −40%#03050F
More saturated +25%#0929D5
Less saturated −25%#414F9D

Channel breakdown

R37
G60
B185
Red37 (14.5%)
Green60 (23.5%)
Blue185 (72.5%)
Hue230.68°
Saturation (HSL)66.67%
Lightness43.53%
Dominant channelBlue
Hex per channelR 25 · G 3C · B B9

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Every value on this page was computed from “253cb9” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.