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Recognised as Colour

#305AFF

  • #305AFF
  • Blue
  • Dark
  • Nearest: Medium slateblue

#305AFF is a blue with RGB values 48, 90, 255 and HSL 228°, 100%, 59%. It is a dark colour, so white text on it reaches 5.2:1 contrast (AA for normal text). The nearest named colour is Medium slateblue.

Colour values

#305AFF#305AFF
HEX#305AFF
RGBrgb(48, 90, 255)
RGB (0–1)0.1882, 0.3529, 1
RGB percentages18.8%, 35.3%, 100%
HSLhsl(227.8, 100%, 59.4%)
HSV / HSBhsv(227.8, 81.2%, 100%)
CMYK81.2%, 64.7%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,169,023
CSS custom property--colour: #305AFF;

Brightness & contrast

Relative luminance0.15161WCAG 2.x, 0 is black and 1 is white
Perceived brightness113.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.21:1
Contrast with white5.21:1WCAG normal text: AA
Contrast with black4.03:1WCAG normal text: Fail
Greyscale equivalent#5D5D5D
Inverted#CFA500

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0077FFno red cones; affects about 1% of men; ΔE 23.7 from the original
Deuteranopia#0063FCno green cones; the most common form, about 1% of men; ΔE 9.3 from the original
Tritanopia#0087A5no blue cones; rare, and affects men and women equally; ΔE 88.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.21:1WCAG large text: AAA
Contrast with black, large text4.03:1WCAG large text: AA

Named colours

Medium slateblue · ΔE 21.2Royal blue · ΔE 27.3Blue violet · ΔE 27.6Slate blue · ΔE 28.9Medium blue · ΔE 31.3Dark orchid · ΔE 32.6
Nearest named CSS colourMedium slateblue (#7B68EE)ΔE 21.22, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FFD530
Analogous#30C2FF, #6E30FF
Triadic#FF305A, #5AFF30
Split complementary#FF6E30, #C1FF30
Tetradic#FF30C2, #FFD530, #30FF6E

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FCFDFF
Lighter +30%#C9D4FF
Lighter +20%#96ABFF
Lighter +10%#6383FF
Darker −10%#0033FC
Darker −20%#0029C9
Darker −30%#001E96
Darker −40%#001463
More saturated +25%#305AFF
Less saturated −25%#4A69E5

Channel breakdown

R48
G90
B255
Red48 (18.8%)
Green90 (35.3%)
Blue255 (100%)
Hue227.83°
Saturation (HSL)100%
Lightness59.41%
Dominant channelBlue
Hex per channelR 30 · G 5A · B FF

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Every value on this page was computed from “305aff” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.