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Recognised as Colour

#2F5BB9

  • #2F5BB9
  • Blue
  • Dark
  • Nearest: Royal blue

#2F5BB9 is a blue with RGB values 47, 91, 185 and HSL 221°, 59%, 45%. It is a dark colour, so white text on it reaches 6.3:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#2F5BB9#2F5BB9
HEX#2F5BB9
RGBrgb(47, 91, 185)
RGB (0–1)0.1843, 0.3569, 0.7255
RGB percentages18.4%, 35.7%, 72.5%
HSLhsl(220.9, 59.5%, 45.5%)
HSV / HSBhsv(220.9, 74.6%, 72.5%)
CMYK74.6%, 50.8%, 0%, 27.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,103,673
CSS custom property--colour: #2F5BB9;

Brightness & contrast

Relative luminance0.11589WCAG 2.x, 0 is black and 1 is white
Perceived brightness97.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.33:1
Contrast with white6.33:1WCAG normal text: AA
Contrast with black3.32:1WCAG normal text: Fail
Greyscale equivalent#585858
Inverted#D0A446

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#2166BCno red cones; affects about 1% of men; ΔE 8.6 from the original
Deuteranopia#005AB7no green cones; the most common form, about 1% of men; ΔE 4 from the original
Tritanopia#007281no blue cones; rare, and affects men and women equally; ΔE 55 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.33:1WCAG large text: AAA
Contrast with black, large text3.32:1WCAG large text: AA

Named colours

Royal blue · ΔE 15.6Dark slateblue · ΔE 17.3Slate blue · ΔE 18.8Dodgerblue · ΔE 22.6Cornflower blue · ΔE 23.6Medium purple · ΔE 23.9
Nearest named CSS colourRoyal blue (#4169E1)ΔE 15.6, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B98D2F
Analogous#2FA0B9, #482FB9
Triadic#B92F5B, #5BB92F
Split complementary#B9482F, #A0B92F
Tetradic#B92FA0, #B98D2F, #2FB948

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C4D2F0
Lighter +30%#9BB3E6
Lighter +20%#7394DB
Lighter +10%#4A75D1
Darker −10%#254790
Darker −20%#1A3368
Darker −30%#101F3F
Darker −40%#060B16
More saturated +25%#1250D6
Less saturated −25%#4C669C

Channel breakdown

R47
G91
B185
Red47 (18.4%)
Green91 (35.7%)
Blue185 (72.5%)
Hue220.87°
Saturation (HSL)59.48%
Lightness45.49%
Dominant channelBlue
Hex per channelR 2F · G 5B · B B9

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Every value on this page was computed from “2f5bb9” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.