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Recognised as Colour

#284CB0

  • #284CB0
  • Blue
  • Dark
  • Nearest: Royal blue

#284CB0 is a blue with RGB values 40, 76, 176 and HSL 224°, 63%, 42%. It is a dark colour, so white text on it reaches 7.6:1 contrast (AAA for normal text). The nearest named colour is Royal blue.

Colour values

#284CB0#284CB0
HEX#284CB0
RGBrgb(40, 76, 176)
RGB (0–1)0.1569, 0.298, 0.6902
RGB percentages15.7%, 29.8%, 69%
HSLhsl(224.1, 63%, 42.4%)
HSV / HSBhsv(224.1, 77.3%, 69%)
CMYK77.3%, 56.8%, 0%, 31%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,641,072
CSS custom property--colour: #284CB0;

Brightness & contrast

Relative luminance0.08755WCAG 2.x, 0 is black and 1 is white
Perceived brightness86 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.63:1
Contrast with white7.63:1WCAG normal text: AAA
Contrast with black2.75:1WCAG normal text: Fail
Greyscale equivalent#4C4C4C
Inverted#D7B34F

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#005AB3no red cones; affects about 1% of men; ΔE 11.9 from the original
Deuteranopia#004DAEno green cones; the most common form, about 1% of men; ΔE 4.2 from the original
Tritanopia#006576no blue cones; rare, and affects men and women equally; ΔE 58.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.63:1WCAG large text: AAA
Contrast with black, large text2.75:1WCAG large text: Fail

Named colours

Royal blue · ΔE 15.1Slate blue · ΔE 15.7Dark slateblue · ΔE 15.8Rebecca purple · ΔE 21.6Midnight blue · ΔE 22.4Medium purple · ΔE 24.4
Nearest named CSS colourRoyal blue (#4169E1)ΔE 15.06, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B08C28
Analogous#2890B0, #4828B0
Triadic#B0284C, #4CB028
Split complementary#B04828, #90B028
Tetradic#B02890, #B08C28, #28B048

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B6C5EE
Lighter +30%#8CA4E5
Lighter +20%#6383DB
Lighter +10%#3962D2
Darker −10%#1F3A86
Darker −20%#15285D
Darker −30%#0C1633
Darker −40%#02040A
More saturated +25%#0D3FCB
Less saturated −25%#435995

Channel breakdown

R40
G76
B176
Red40 (15.7%)
Green76 (29.8%)
Blue176 (69%)
Hue224.12°
Saturation (HSL)62.96%
Lightness42.35%
Dominant channelBlue
Hex per channelR 28 · G 4C · B B0

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Every value on this page was computed from “284cb0” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.