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Colour

#2554B9

  • #2554B9
  • Blue
  • Dark
  • Nearest: Royal blue

#2554B9 is a blue with RGB values 37, 84, 185 and HSL 221°, 67%, 44%. It is a dark colour, so white text on it reaches 6.9:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#2554B9#2554B9
HEX#2554B9
RGBrgb(37, 84, 185)
RGB (0–1)0.1451, 0.3294, 0.7255
RGB percentages14.5%, 32.9%, 72.5%
HSLhsl(220.9, 66.7%, 43.5%)
HSV / HSBhsv(220.9, 80%, 72.5%)
CMYK80%, 54.6%, 0%, 27.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,446,521
CSS custom property--colour: #2554B9;

Brightness & contrast

Relative luminance0.10237WCAG 2.x, 0 is black and 1 is white
Perceived brightness91.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.89:1
Contrast with white6.89:1WCAG normal text: AA
Contrast with black3.05:1WCAG normal text: Fail
Greyscale equivalent#515151
Inverted#DAAB46

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0061BDno red cones; affects about 1% of men; ΔE 10.2 from the original
Deuteranopia#0054B7no green cones; the most common form, about 1% of men; ΔE 3.1 from the original
Tritanopia#006D7Eno blue cones; rare, and affects men and women equally; ΔE 58.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.89:1WCAG large text: AAA
Contrast with black, large text3.05:1WCAG large text: AA

Named colours

Royal blue · ΔE 13Slate blue · ΔE 16Dark slateblue · ΔE 17.9Medium purple · ΔE 23.8Rebecca purple · ΔE 24.4Dodgerblue · ΔE 24.8
Nearest named CSS colourRoyal blue (#4169E1)ΔE 12.98, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B98A25
Analogous#259EB9, #4025B9
Triadic#B92554, #54B925
Split complementary#B94025, #9EB925
Tetradic#B9259E, #B98A25, #25B940

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B9CBF1
Lighter +30%#8FABE9
Lighter +20%#648BE0
Lighter +10%#3A6CD7
Darker −10%#1D418F
Darker −20%#142D64
Darker −30%#0C1A3A
Darker −40%#03070F
More saturated +25%#094AD5
Less saturated −25%#415E9D

Channel breakdown

R37
G84
B185
Red37 (14.5%)
Green84 (32.9%)
Blue185 (72.5%)
Hue220.95°
Saturation (HSL)66.67%
Lightness43.53%
Dominant channelBlue
Hex per channelR 25 · G 54 · B B9

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Every value on this page was computed from “2554b9” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.