Recognised as Colour

#555A91

#555A91
Blue
Dark
Nearest: Dark slateblue

#555A91 is a blue with RGB values 85, 90, 145 and HSL 235°, 26%, 45%. It is a dark colour, so white text on it reaches 6.4:1 contrast (AA for normal text). The nearest named colour is Dark slateblue.

Colour values

#555A91#555A91

HEX#555A91

RGBrgb(85, 90, 145)

RGB (0–1)0.3333, 0.3529, 0.5686

RGB percentages33.3%, 35.3%, 56.9%

HSLhsl(235, 26.1%, 45.1%)

HSV / HSBhsv(235, 41.4%, 56.9%)

CMYK41.4%, 37.9%, 0%, 43.1%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer5,593,745

CSS custom property--colour: #555A91;

Brightness & contrast

Relative luminance0.11288WCAG 2.x, 0 is black and 1 is white

Perceived brightness96.5 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.45:1

Contrast with white6.45:1WCAG normal text: AA

Contrast with black3.26:1WCAG normal text: Fail

Greyscale equivalent#5D5D5D

Inverted#AAA56E

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#476193no red cones; affects about 1% of men; ΔE 7.6 from the original

Deuteranopia#435C90no green cones; the most common form, about 1% of men; ΔE 6.4 from the original

Tritanopia#43656Eno blue cones; rare, and affects men and women equally; ΔE 31.4 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text6.45:1WCAG large text: AAA

Contrast with black, large text3.26:1WCAG large text: AA

Named colours

Dark slateblue · ΔE 19.7 Steel blue · ΔE 20.9 Slate grey · ΔE 28.3 Cornflower blue · ΔE 28.7 Light slate grey · ΔE 29.5 Dim grey · ΔE 33.8

Nearest named CSS colourDark slateblue (#483D8B)ΔE 19.66, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#918C55

Analogous#557891, #6E5591

Triadic#91555A, #5A9155

Split complementary#916E55, #789155

Tetradic#915578, #918C55, #55916E

Tints, shades & saturation

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

Lighter +40%#CFD1E3

Lighter +30%#AFB2D0

Lighter +20%#8F93BD

Lighter +10%#6F74AA

Darker −10%#424671

Darker −20%#2F3251

Darker −30%#1C1E31

Darker −40%#0A0A10

More saturated +25%#3842AE

Less saturated −25%#727274

Channel breakdown

R85

G90

B145

Red85 (33.3%)

Green90 (35.3%)

Blue145 (56.9%)

Hue235°

Saturation (HSL)26.09%

Lightness45.1%

Dominant channelBlue

Hex per channelR 55 · G 5A · B 91

Keep nerding

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

#555A91

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