Colour

#557AAB

#557AAB
Blue
Dark
Nearest: Steel blue

#557AAB is a blue with RGB values 85, 122, 171 and HSL 214°, 34%, 50%. It is a dark colour, so black text on it reaches 4.8:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#557AAB#557AAB

HEX#557AAB

RGBrgb(85, 122, 171)

RGB (0–1)0.3333, 0.4784, 0.6706

RGB percentages33.3%, 47.8%, 67.1%

HSLhsl(214.2, 33.9%, 50.2%)

HSV / HSBhsv(214.2, 50.3%, 67.1%)

CMYK50.3%, 28.7%, 0%, 32.9%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer5,601,963

CSS custom property--colour: #557AAB;

Brightness & contrast

Relative luminance0.18791WCAG 2.x, 0 is black and 1 is white

Perceived brightness119.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 4.76:1

Contrast with white4.41:1WCAG normal text: Fail

Contrast with black4.76:1WCAG normal text: AA

Greyscale equivalent#767676

Inverted#AA8554

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#677DADno red cones; affects about 1% of men; ΔE 4.6 from the original

Deuteranopia#5C74AAno green cones; the most common form, about 1% of men; ΔE 5.5 from the original

Tritanopia#2D858Bno blue cones; rare, and affects men and women equally; ΔE 31.2 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text4.41:1WCAG large text: AA

Contrast with black, large text4.76:1WCAG large text: AAA

Named colours

Steel blue · ΔE 5.9 Slate grey · ΔE 19.9 Light slate grey · ΔE 20 Cornflower blue · ΔE 23.9 Gray · ΔE 30.3 Dim grey · ΔE 30.7

Nearest named CSS colourSteel blue (#4682B4)ΔE 5.89, clearly different but related

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#AB8655

Analogous#55A5AB, #5B55AB

Triadic#AB557A, #7AAB55

Split complementary#AB5B55, #A5AB55

Tetradic#AB55A5, #AB8655, #55AB5B

Tints, shades & saturation

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

Lighter +40%#DEE5EE

Lighter +30%#BBCADE

Lighter +20%#99AFCD

Lighter +10%#7795BC

Darker −10%#446289

Darker −20%#334967

Darker −30%#223145

Darker −40%#111923

More saturated +25%#3576CB

Less saturated −25%#757E8B

Channel breakdown

R85

G122

B171

Red85 (33.3%)

Green122 (47.8%)

Blue171 (67.1%)

Hue214.19°

Saturation (HSL)33.86%

Lightness50.2%

Dominant channelBlue

Hex per channelR 55 · G 7A · B AB

Keep nerding

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

#557AAB

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

Nerdulate something else