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Recognised as Colour

#285AAC

  • #285AAC
  • Blue
  • Dark
  • Nearest: Dark slateblue

#285AAC is a blue with RGB values 40, 90, 172 and HSL 217°, 62%, 42%. It is a dark colour, so white text on it reaches 6.7:1 contrast (AA for normal text). The nearest named colour is Dark slateblue.

Colour values

#285AAC#285AAC
HEX#285AAC
RGBrgb(40, 90, 172)
RGB (0–1)0.1569, 0.3529, 0.6745
RGB percentages15.7%, 35.3%, 67.5%
HSLhsl(217.3, 62.3%, 41.6%)
HSV / HSBhsv(217.3, 76.7%, 67.5%)
CMYK76.7%, 47.7%, 0%, 32.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,644,652
CSS custom property--colour: #285AAC;

Brightness & contrast

Relative luminance0.10742WCAG 2.x, 0 is black and 1 is white
Perceived brightness92.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.67:1
Contrast with white6.67:1WCAG normal text: AA
Contrast with black3.15:1WCAG normal text: Fail
Greyscale equivalent#555555
Inverted#D7A553

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#2D63AFno red cones; affects about 1% of men; ΔE 5.9 from the original
Deuteranopia#0657AAno green cones; the most common form, about 1% of men; ΔE 2.8 from the original
Tritanopia#006D7Ano blue cones; rare, and affects men and women equally; ΔE 48.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.67:1WCAG large text: AAA
Contrast with black, large text3.15:1WCAG large text: AA

Named colours

Dark slateblue · ΔE 16.8Royal blue · ΔE 22.9Cornflower blue · ΔE 23.1Dodgerblue · ΔE 25.2Slate blue · ΔE 25.5Steel blue · ΔE 27.2
Nearest named CSS colourDark slateblue (#483D8B)ΔE 16.85, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#AC7A28
Analogous#289CAC, #3828AC
Triadic#AC285A, #5AAC28
Split complementary#AC3828, #9CAC28
Tetradic#AC289C, #AC7A28, #28AC38

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B3C9ED
Lighter +30%#89ACE4
Lighter +20%#608EDA
Lighter +10%#3771D0
Darker −10%#1E4483
Darker −20%#152F59
Darker −30%#0B1930
Darker −40%#020306
More saturated +25%#0D54C7
Less saturated −25%#436092

Channel breakdown

R40
G90
B172
Red40 (15.7%)
Green90 (35.3%)
Blue172 (67.5%)
Hue217.27°
Saturation (HSL)62.26%
Lightness41.57%
Dominant channelBlue
Hex per channelR 28 · G 5A · B AC

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Every value on this page was computed from “285aac” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.