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Colour

#305EA5

  • #305EA5
  • Blue
  • Dark
  • Nearest: Dark slateblue

#305EA5 is a blue with RGB values 48, 94, 165 and HSL 216°, 55%, 42%. It is a dark colour, so white text on it reaches 6.4:1 contrast (AA for normal text). The nearest named colour is Dark slateblue.

Colour values

#305EA5#305EA5
HEX#305EA5
RGBrgb(48, 94, 165)
RGB (0–1)0.1882, 0.3686, 0.6471
RGB percentages18.8%, 36.9%, 64.7%
HSLhsl(216.4, 54.9%, 41.8%)
HSV / HSBhsv(216.4, 70.9%, 64.7%)
CMYK70.9%, 43%, 0%, 35.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,169,957
CSS custom property--colour: #305EA5;

Brightness & contrast

Relative luminance0.1135WCAG 2.x, 0 is black and 1 is white
Perceived brightness94.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.42:1
Contrast with white6.42:1WCAG normal text: AA
Contrast with black3.27:1WCAG normal text: Fail
Greyscale equivalent#595959
Inverted#CFA15A

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3C64A8no red cones; affects about 1% of men; ΔE 3.3 from the original
Deuteranopia#285AA4no green cones; the most common form, about 1% of men; ΔE 2.7 from the original
Tritanopia#006E79no blue cones; rare, and affects men and women equally; ΔE 42.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text6.42:1WCAG large text: AAA
Contrast with black, large text3.27:1WCAG large text: AA

Named colours

Dark slateblue · ΔE 19.6Steel blue · ΔE 20.8Cornflower blue · ΔE 22.7Dodgerblue · ΔE 28.1Royal blue · ΔE 29.4Slate blue · ΔE 31.4
Nearest named CSS colourDark slateblue (#483D8B)ΔE 19.61, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A57730
Analogous#3099A5, #3C30A5
Triadic#A5305E, #5EA530
Split complementary#A53D30, #99A530
Tetradic#A53099, #A57730, #30A53D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B7CBEA
Lighter +30%#8FAFDF
Lighter +20%#6892D3
Lighter +10%#4076C8
Darker −10%#25477D
Darker −20%#193156
Darker −30%#0E1A2E
Darker −40%#020407
More saturated +25%#1558C0
Less saturated −25%#4B648A

Channel breakdown

R48
G94
B165
Red48 (18.8%)
Green94 (36.9%)
Blue165 (64.7%)
Hue216.41°
Saturation (HSL)54.93%
Lightness41.76%
Dominant channelBlue
Hex per channelR 30 · G 5E · B A5

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Every value on this page was computed from “305ea5” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.