Recognised as Colour

#577CC0

#577CC0
Blue
Dark
Nearest: Steel blue

#577CC0 is a blue with RGB values 87, 124, 192 and HSL 219°, 45%, 55%. It is a dark colour, so black text on it reaches 5:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#577CC0#577CC0

HEX#577CC0

RGBrgb(87, 124, 192)

RGB (0–1)0.3412, 0.4863, 0.7529

RGB percentages34.1%, 48.6%, 75.3%

HSLhsl(218.9, 45.5%, 54.7%)

HSV / HSBhsv(218.9, 54.7%, 75.3%)

CMYK54.7%, 35.4%, 0%, 24.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer5,733,568

CSS custom property--colour: #577CC0;

Brightness & contrast

Relative luminance0.20247WCAG 2.x, 0 is black and 1 is white

Perceived brightness124.5 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.05:1

Contrast with white4.16:1WCAG normal text: Fail

Contrast with black5.05:1WCAG normal text: AA

Greyscale equivalent#797979

Inverted#A8833F

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6182C3no red cones; affects about 1% of men; ΔE 3.2 from the original

Deuteranopia#5478BFno green cones; the most common form, about 1% of men; ΔE 2.5 from the original

Tritanopia#198B95no blue cones; rare, and affects men and women equally; ΔE 41.7 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text4.16:1WCAG large text: AA

Contrast with black, large text5.05:1WCAG large text: AAA

Named colours

Steel blue · ΔE 13.3 Cornflower blue · ΔE 14 Dodgerblue · ΔE 25.1 Dark slateblue · ΔE 28.7 Light slate grey · ΔE 30.2 Slate grey · ΔE 30.4

Nearest named CSS colourSteel blue (#4682B4)ΔE 13.3, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#C09B57

Analogous#57B0C0, #6757C0

Triadic#C0577C, #7CC057

Split complementary#C06757, #B0C057

Tetradic#C057B0, #C09B57, #57C067

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#EBF0F8

Lighter +30%#C6D3EA

Lighter +20%#A1B6DC

Lighter +10%#7C99CE

Darker −10%#3E63A6

Darker −20%#304D81

Darker −30%#22375C

Darker −40%#142037

More saturated +25%#3A73DD

Less saturated −25%#7485A3

Channel breakdown

R87

G124

B192

Red87 (34.1%)

Green124 (48.6%)

Blue192 (75.3%)

Hue218.86°

Saturation (HSL)45.45%

Lightness54.71%

Dominant channelBlue

Hex per channelR 57 · G 7C · B C0

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

#577CC0

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

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