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Recognised as Colour

#285A73

  • #285A73
  • Blue
  • Dark
  • Nearest: Dark slate grey

#285A73 is a blue with RGB values 40, 90, 115 and HSL 200°, 48%, 30%. It is a dark colour, so white text on it reaches 7.5:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#285A73#285A73
HEX#285A73
RGBrgb(40, 90, 115)
RGB (0–1)0.1569, 0.3529, 0.451
RGB percentages15.7%, 35.3%, 45.1%
HSLhsl(200, 48.4%, 30.4%)
HSV / HSBhsv(200, 65.2%, 45.1%)
CMYK65.2%, 21.7%, 0%, 54.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,644,595
CSS custom property--colour: #285A73;

Brightness & contrast

Relative luminance0.09001WCAG 2.x, 0 is black and 1 is white
Perceived brightness82.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.5:1
Contrast with white7.5:1WCAG normal text: AAA
Contrast with black2.8:1WCAG normal text: Fail
Greyscale equivalent#515151
Inverted#D7A58C

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#4E5974no red cones; affects about 1% of men; ΔE 11.6 from the original
Deuteranopia#435173no green cones; the most common form, about 1% of men; ΔE 12.7 from the original
Tritanopia#006162no blue cones; rare, and affects men and women equally; ΔE 19 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text7.5:1WCAG large text: AAA
Contrast with black, large text2.8:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 16.5Slate grey · ΔE 20Steel blue · ΔE 21.4Light slate grey · ΔE 22.4Dim grey · ΔE 22.6Teal · ΔE 26.1
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 16.53, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#734128
Analogous#287367, #283573
Triadic#73285A, #5A7328
Split complementary#732835, #736728
Tetradic#662873, #734128, #357328

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8FC0D8
Lighter +30%#69AACB
Lighter +20%#4395BE
Lighter +10%#357899
Darker −10%#1B3C4D
Darker −20%#0E1F27
Darker −30%#010101
Darker −40%#000000
More saturated +25%#156086
Less saturated −25%#3B5460

Channel breakdown

R40
G90
B115
Red40 (15.7%)
Green90 (35.3%)
Blue115 (45.1%)
Hue200°
Saturation (HSL)48.39%
Lightness30.39%
Dominant channelBlue
Hex per channelR 28 · G 5A · B 73

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Every value on this page was computed from “285a73” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.