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Recognised as Colour

#579CC9

  • #579CC9
  • Blue
  • Dark
  • Nearest: Steel blue

#579CC9 is a blue with RGB values 87, 156, 201 and HSL 204°, 51%, 56%. It is a dark colour, so black text on it reaches 7:1 contrast (AAA for normal text). The nearest named colour is Steel blue.

Colour values

#579CC9#579CC9
HEX#579CC9
RGBrgb(87, 156, 201)
RGB (0–1)0.3412, 0.6118, 0.7882
RGB percentages34.1%, 61.2%, 78.8%
HSLhsl(203.7, 51.4%, 56.5%)
HSV / HSBhsv(203.7, 56.7%, 78.8%)
CMYK56.7%, 22.4%, 0%, 21.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,741,769
CSS custom property--colour: #579CC9;

Brightness & contrast

Relative luminance0.3002WCAG 2.x, 0 is black and 1 is white
Perceived brightness145.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 7:1
Contrast with white3:1WCAG normal text: Fail
Contrast with black7:1WCAG normal text: AAA
Greyscale equivalent#919191
Inverted#A86336

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#889CCBno red cones; affects about 1% of men; ΔE 13.6 from the original
Deuteranopia#7890C8no green cones; the most common form, about 1% of men; ΔE 14.7 from the original
Tritanopia#00A7ABno blue cones; rare, and affects men and women equally; ΔE 30.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3:1WCAG large text: Fail
Contrast with black, large text7:1WCAG large text: AAA

Named colours

Steel blue · ΔE 10.6Light skyblue · ΔE 18.2Deep skyblue · ΔE 19Sky blue · ΔE 20.4Light slate grey · ΔE 20.5Slate grey · ΔE 22.1
Nearest named CSS colourSteel blue (#4682B4)ΔE 10.6, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#C98457
Analogous#57C9BD, #5763C9
Triadic#C9579C, #9CC957
Split complementary#C95763, #C9BD57
Tetradic#BD57C9, #C98457, #63C957

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#F1F7FB
Lighter +30%#CBE0EE
Lighter +20%#A4C9E2
Lighter +10%#7EB3D5
Darker −10%#3A83B3
Darker −20%#2D678D
Darker −30%#214B66
Darker −40%#142F40
More saturated +25%#3BA2E5
Less saturated −25%#7396AD

Channel breakdown

R87
G156
B201
Red87 (34.1%)
Green156 (61.2%)
Blue201 (78.8%)
Hue203.68°
Saturation (HSL)51.35%
Lightness56.47%
Dominant channelBlue
Hex per channelR 57 · G 9C · B C9

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Every value on this page was computed from “579cc9” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.