Recognised as Colour

#557BC1

#557BC1
Blue
Dark
Nearest: Cornflower blue

#557BC1 is a blue with RGB values 85, 123, 193 and HSL 219°, 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

#557BC1#557BC1

HEX#557BC1

RGBrgb(85, 123, 193)

RGB (0–1)0.3333, 0.4824, 0.7569

RGB percentages33.3%, 48.2%, 75.7%

HSLhsl(218.9, 46.6%, 54.5%)

HSV / HSBhsv(218.9, 56%, 75.7%)

CMYK56%, 36.3%, 0%, 24.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer5,602,241

CSS custom property--colour: #557BC1;

Brightness & contrast

Relative luminance0.19947WCAG 2.x, 0 is black and 1 is white

Perceived brightness123.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 4.99:1

Contrast with white4.21:1WCAG normal text: Fail

Contrast with black4.99:1WCAG normal text: AA

Greyscale equivalent#787878

Inverted#AA843E

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#5E81C4no red cones; affects about 1% of men; ΔE 3.1 from the original

Deuteranopia#5177C0no green cones; the most common form, about 1% of men; ΔE 2.5 from the original

Tritanopia#0C8A95no blue cones; rare, and affects men and women equally; ΔE 42.7 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text4.21:1WCAG large text: AA

Contrast with black, large text4.99:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 13.4 Steel blue · ΔE 14.4 Dodgerblue · ΔE 24.1 Dark slateblue · ΔE 28 Medium purple · ΔE 31 Royal blue · ΔE 31.2

Nearest named CSS colourCornflower blue (#6495ED)ΔE 13.44, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#C19B55

Analogous#55B1C1, #6555C1

Triadic#C1557B, #7BC155

Split complementary#C16555, #B1C155

Tetradic#C155B1, #C19B55, #55C165

Tints, shades & saturation

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

Lighter +40%#EAEFF8

Lighter +30%#C5D2EA

Lighter +20%#A0B5DC

Lighter +10%#7A98CF

Darker −10%#3D62A6

Darker −20%#2F4C81

Darker −30%#21365C

Darker −40%#142036

More saturated +25%#3872DE

Less saturated −25%#7284A4

Channel breakdown

R85

G123

B193

Red85 (33.3%)

Green123 (48.2%)

Blue193 (75.7%)

Hue218.89°

Saturation (HSL)46.55%

Lightness54.51%

Dominant channelBlue

Hex per channelR 55 · G 7B · B C1

Keep nerding

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

#557BC1

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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