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Recognised as Colour

#306FDE

  • #306FDE
  • Blue
  • Dark
  • Nearest: Royal blue

#306FDE is a blue with RGB values 48, 111, 222 and HSL 218°, 73%, 53%. It is a dark colour, so white text on it reaches 4.7:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#306FDE#306FDE
HEX#306FDE
RGBrgb(48, 111, 222)
RGB (0–1)0.1882, 0.4353, 0.8706
RGB percentages18.8%, 43.5%, 87.1%
HSLhsl(218.3, 72.5%, 52.9%)
HSV / HSBhsv(218.3, 78.4%, 87.1%)
CMYK78.4%, 50%, 0%, 12.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,174,366
CSS custom property--colour: #306FDE;

Brightness & contrast

Relative luminance0.17271WCAG 2.x, 0 is black and 1 is white
Perceived brightness116.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 4.71:1
Contrast with white4.71:1WCAG normal text: AA
Contrast with black4.45:1WCAG normal text: Fail
Greyscale equivalent#6A6A6A
Inverted#CF9021

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#297CE2no red cones; affects about 1% of men; ΔE 9 from the original
Deuteranopia#006CDCno green cones; the most common form, about 1% of men; ΔE 3 from the original
Tritanopia#008A9Cno blue cones; rare, and affects men and women equally; ΔE 62.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.71:1WCAG large text: AAA
Contrast with black, large text4.45:1WCAG large text: AA

Named colours

Royal blue · ΔE 7.5Dodgerblue · ΔE 14.4Slate blue · ΔE 17.6Cornflower blue · ΔE 21.2Medium slateblue · ΔE 22.2Medium purple · ΔE 22.2
Nearest named CSS colourRoyal blue (#4169E1)ΔE 7.52, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DE9F30
Analogous#30C6DE, #4830DE
Triadic#DE306F, #6FDE30
Split complementary#DE4830, #C6DE30
Tetradic#DE30C6, #DE9F30, #30DE48

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E0E9FA
Lighter +30%#B4CBF3
Lighter +20%#88ACEC
Lighter +10%#5C8EE5
Darker −10%#1E58BD
Darker −20%#174391
Darker −30%#102F65
Darker −40%#091A39
More saturated +25%#1267FC
Less saturated −25%#4E77C0

Channel breakdown

R48
G111
B222
Red48 (18.8%)
Green111 (43.5%)
Blue222 (87.1%)
Hue218.28°
Saturation (HSL)72.5%
Lightness52.94%
Dominant channelBlue
Hex per channelR 30 · G 6F · B DE

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Every value on this page was computed from “306fde” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.