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Recognised as Colour

#284BAA

  • #284BAA
  • Blue
  • Dark
  • Nearest: Dark slateblue

#284BAA is a blue with RGB values 40, 75, 170 and HSL 224°, 62%, 41%. It is a dark colour, so white text on it reaches 7.8:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#284BAA#284BAA
HEX#284BAA
RGBrgb(40, 75, 170)
RGB (0–1)0.1569, 0.2941, 0.6667
RGB percentages15.7%, 29.4%, 66.7%
HSLhsl(223.8, 61.9%, 41.2%)
HSV / HSBhsv(223.8, 76.5%, 66.7%)
CMYK76.5%, 55.9%, 0%, 33.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,640,810
CSS custom property--colour: #284BAA;

Brightness & contrast

Relative luminance0.08386WCAG 2.x, 0 is black and 1 is white
Perceived brightness84.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.84:1
Contrast with white7.84:1WCAG normal text: AAA
Contrast with black2.68:1WCAG normal text: Fail
Greyscale equivalent#4A4A4A
Inverted#D7B455

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0058ADno red cones; affects about 1% of men; ΔE 11.2 from the original
Deuteranopia#004CA8no green cones; the most common form, about 1% of men; ΔE 4.4 from the original
Tritanopia#006273no blue cones; rare, and affects men and women equally; ΔE 55.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.84:1WCAG large text: AAA
Contrast with black, large text2.68:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 13.7Royal blue · ΔE 17.4Slate blue · ΔE 17.7Midnight blue · ΔE 21.8Rebecca purple · ΔE 22.1Medium purple · ΔE 25.3
Nearest named CSS colourDark slateblue (#483D8B)ΔE 13.68, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#AA8728
Analogous#288CAA, #4628AA
Triadic#AA284B, #4BAA28
Split complementary#AA4628, #8CAA28
Tetradic#AA288C, #AA8728, #28AA46

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B1C1ED
Lighter +30%#88A1E3
Lighter +20%#5F80D9
Lighter +10%#355FD0
Darker −10%#1E3981
Darker −20%#152757
Darker −30%#0B142E
Darker −40%#010205
More saturated +25%#0E3FC4
Less saturated −25%#425790

Channel breakdown

R40
G75
B170
Red40 (15.7%)
Green75 (29.4%)
Blue170 (66.7%)
Hue223.85°
Saturation (HSL)61.9%
Lightness41.18%
Dominant channelBlue
Hex per channelR 28 · G 4B · B AA

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Every value on this page was computed from “284baa” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.