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Recognised as Colour

#254FBB

  • #254FBB
  • Blue
  • Dark
  • Nearest: Royal blue

#254FBB is a blue with RGB values 37, 79, 187 and HSL 223°, 67%, 44%. It is a dark colour, so white text on it reaches 7.2:1 contrast (AAA for normal text). The nearest named colour is Royal blue.

Colour values

#254FBB#254FBB
HEX#254FBB
RGBrgb(37, 79, 187)
RGB (0–1)0.1451, 0.3098, 0.7333
RGB percentages14.5%, 31%, 73.3%
HSLhsl(223.2, 67%, 43.9%)
HSV / HSBhsv(223.2, 80.2%, 73.3%)
CMYK80.2%, 57.8%, 0%, 26.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,445,243
CSS custom property--colour: #254FBB;

Brightness & contrast

Relative luminance0.09573WCAG 2.x, 0 is black and 1 is white
Perceived brightness89.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.21:1
Contrast with white7.21:1WCAG normal text: AAA
Contrast with black2.91:1WCAG normal text: Fail
Greyscale equivalent#4E4E4E
Inverted#DAB044

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#005EBFno red cones; affects about 1% of men; ΔE 11.8 from the original
Deuteranopia#0051B9no green cones; the most common form, about 1% of men; ΔE 4.3 from the original
Tritanopia#006A7Dno blue cones; rare, and affects men and women equally; ΔE 61.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.21:1WCAG large text: AAA
Contrast with black, large text2.91:1WCAG large text: Fail

Named colours

Royal blue · ΔE 11.6Slate blue · ΔE 13.6Dark slateblue · ΔE 19.9Medium slateblue · ΔE 22Rebecca purple · ΔE 22.4Medium purple · ΔE 23.7
Nearest named CSS colourRoyal blue (#4169E1)ΔE 11.62, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BB9125
Analogous#259ABB, #4625BB
Triadic#BB254F, #4FBB25
Split complementary#BB4625, #9ABB25
Tetradic#BB259A, #BB9125, #25BB46

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#BBCAF1
Lighter +30%#90A9E9
Lighter +20%#6588E1
Lighter +10%#3B67D8
Darker −10%#1D3D90
Darker −20%#142B66
Darker −30%#0C193B
Darker −40%#030711
More saturated +25%#0943D7
Less saturated −25%#415B9F

Channel breakdown

R37
G79
B187
Red37 (14.5%)
Green79 (31%)
Blue187 (73.3%)
Hue223.2°
Saturation (HSL)66.96%
Lightness43.92%
Dominant channelBlue
Hex per channelR 25 · G 4F · B BB

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Every value on this page was computed from “254fbb” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.