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Recognised as Colour

#577DD6

  • #577DD6
  • Blue
  • Dark
  • Nearest: Cornflower blue

#577DD6 is a blue with RGB values 87, 125, 214 and HSL 222°, 61%, 59%. It is a dark colour, so black text on it reaches 5.3:1 contrast (AA for normal text). The nearest named colour is Cornflower blue.

Colour values

#577DD6#577DD6
HEX#577DD6
RGBrgb(87, 125, 214)
RGB (0–1)0.3412, 0.4902, 0.8392
RGB percentages34.1%, 49%, 83.9%
HSLhsl(222, 60.8%, 59%)
HSV / HSBhsv(222, 59.3%, 83.9%)
CMYK59.3%, 41.6%, 0%, 16.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,733,846
CSS custom property--colour: #577DD6;

Brightness & contrast

Relative luminance0.21549WCAG 2.x, 0 is black and 1 is white
Perceived brightness129.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.31:1
Contrast with white3.96:1WCAG normal text: Fail
Contrast with black5.31:1WCAG normal text: AA
Greyscale equivalent#7B7B7B
Inverted#A88229

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5686D9no red cones; affects about 1% of men; ΔE 5.8 from the original
Deuteranopia#447BD4no green cones; the most common form, about 1% of men; ΔE 3.5 from the original
Tritanopia#00919Fno blue cones; rare, and affects men and women equally; ΔE 52.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.96:1WCAG large text: AA
Contrast with black, large text5.31:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 9.4Dodgerblue · ΔE 15.2Royal blue · ΔE 20.8Medium purple · ΔE 23.2Steel blue · ΔE 25Slate blue · ΔE 25.2
Nearest named CSS colourCornflower blue (#6495ED)ΔE 9.43, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#D6B057
Analogous#57BDD6, #7057D6
Triadic#D6577D, #7DD657
Split complementary#D67157, #BDD657
Tetradic#D657BD, #D6B057, #57D670

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FBFCFE
Lighter +30%#D2DCF4
Lighter +20%#A9BCEA
Lighter +10%#809DE0
Darker −10%#315EC9
Darker −20%#274BA0
Darker −30%#1D3877
Darker −40%#13254E
More saturated +25%#3D73F0
Less saturated −25%#7187BC

Channel breakdown

R87
G125
B214
Red87 (34.1%)
Green125 (49%)
Blue214 (83.9%)
Hue222.05°
Saturation (HSL)60.77%
Lightness59.02%
Dominant channelBlue
Hex per channelR 57 · G 7D · B D6

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Every value on this page was computed from “577dd6” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.