Colour

#2A57AF

#2A57AF
Blue
Dark
Nearest: Dark slateblue

#2A57AF is a blue with RGB values 42, 87, 175 and HSL 220°, 61%, 43%. It is a dark colour, so white text on it reaches 6.8:1 contrast (AA for normal text). The nearest named colour is Dark slateblue.

Colour values

#2A57AF#2A57AF

HEX#2A57AF

RGBrgb(42, 87, 175)

RGB (0–1)0.1647, 0.3412, 0.6863

RGB percentages16.5%, 34.1%, 68.6%

HSLhsl(219.7, 61.3%, 42.5%)

HSV / HSBhsv(219.7, 76%, 68.6%)

CMYK76%, 50.3%, 0%, 31.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer2,774,959

CSS custom property--colour: #2A57AF;

Brightness & contrast

Relative luminance0.10404WCAG 2.x, 0 is black and 1 is white

Perceived brightness92 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.82:1

Contrast with white6.82:1WCAG normal text: AA

Contrast with black3.08:1WCAG normal text: Fail

Greyscale equivalent#545454

Inverted#D5A850

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#2261B2no red cones; affects about 1% of men; ΔE 7.4 from the original

Deuteranopia#0055ADno green cones; the most common form, about 1% of men; ΔE 3.3 from the original

Tritanopia#006C7Ano blue cones; rare, and affects men and women equally; ΔE 51.9 from the original

Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning

Contrast with white, large text6.82:1WCAG large text: AAA

Contrast with black, large text3.08:1WCAG large text: AA

Named colours

Dark slateblue · ΔE 15.5 Royal blue · ΔE 19.4 Slate blue · ΔE 21.8 Cornflower blue · ΔE 24.5 Dodgerblue · ΔE 24.8 Medium purple · ΔE 26.2

Nearest named CSS colourDark slateblue (#483D8B)ΔE 15.52, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#AF822A

Analogous#2A99AF, #402AAF

Triadic#AF2A57, #57AF2A

Split complementary#AF3F2A, #9AAF2A

Tetradic#AF2A99, #AF822A, #2AAF3F

Tints, shades & saturation

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

Lighter +40%#B7CAEE

Lighter +30%#8EABE4

Lighter +20%#658DDA

Lighter +10%#3C6ED0

Darker −10%#204386

Darker −20%#162E5D

Darker −30%#0C1A34

Darker −40%#03050A

More saturated +25%#0F4ECA

Less saturated −25%#456094

Channel breakdown

R42

G87

B175

Red42 (16.5%)

Green87 (34.1%)

Blue175 (68.6%)

Hue219.7°

Saturation (HSL)61.29%

Lightness42.55%

Dominant channelBlue

Hex per channelR 2A · G 57 · B AF

Keep nerding

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

#2A57AF

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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