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Recognised as Colour

#577AC2

  • #577AC2
  • Blue
  • Dark
  • Nearest: Cornflower blue

#577AC2 is a blue with RGB values 87, 122, 194 and HSL 220°, 47%, 55%. It is a dark colour, so black text on it reaches 5:1 contrast (AA for normal text). The nearest named colour is Cornflower blue.

Colour values

#577AC2#577AC2
HEX#577AC2
RGBrgb(87, 122, 194)
RGB (0–1)0.3412, 0.4784, 0.7608
RGB percentages34.1%, 47.8%, 76.1%
HSLhsl(220.4, 46.7%, 55.1%)
HSV / HSBhsv(220.4, 55.2%, 76.1%)
CMYK55.2%, 37.1%, 0%, 23.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,733,058
CSS custom property--colour: #577AC2;

Brightness & contrast

Relative luminance0.1984WCAG 2.x, 0 is black and 1 is white
Perceived brightness123.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.97:1
Contrast with white4.23:1WCAG normal text: Fail
Contrast with black4.97:1WCAG normal text: AA
Greyscale equivalent#787878
Inverted#A8853D

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5D80C5no red cones; affects about 1% of men; ΔE 3.1 from the original
Deuteranopia#5077C0no green cones; the most common form, about 1% of men; ΔE 1.7 from the original
Tritanopia#168A95no blue cones; rare, and affects men and women equally; ΔE 43.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text4.23:1WCAG large text: AA
Contrast with black, large text4.97:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 12.9Steel blue · ΔE 15.9Dodgerblue · ΔE 23.3Dark slateblue · ΔE 27Medium purple · ΔE 29.4Royal blue · ΔE 29.8
Nearest named CSS colourCornflower blue (#6495ED)ΔE 12.94, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#C29F57
Analogous#57AFC2, #6A57C2
Triadic#C2577A, #7AC257
Split complementary#C26A57, #AFC257
Tetradic#C257AF, #C29F57, #57C26A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#EDF0F8
Lighter +30%#C7D3EB
Lighter +20%#A2B5DD
Lighter +10%#7C98D0
Darker −10%#3D60A9
Darker −20%#304B83
Darker −30%#22365E
Darker −40%#152038
More saturated +25%#3A70DF
Less saturated −25%#7484A5

Channel breakdown

R87
G122
B194
Red87 (34.1%)
Green122 (47.8%)
Blue194 (76.1%)
Hue220.37°
Saturation (HSL)46.72%
Lightness55.1%
Dominant channelBlue
Hex per channelR 57 · G 7A · B C2

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Every value on this page was computed from “577ac2” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.