Colour

#3057AA

#3057AA
Blue
Dark
Nearest: Dark slateblue

#3057AA is a blue with RGB values 48, 87, 170 and HSL 221°, 56%, 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

#3057AA#3057AA

HEX#3057AA

RGBrgb(48, 87, 170)

RGB (0–1)0.1882, 0.3412, 0.6667

RGB percentages18.8%, 34.1%, 66.7%

HSLhsl(220.8, 56%, 42.7%)

HSV / HSBhsv(220.8, 71.8%, 66.7%)

CMYK71.8%, 48.8%, 0%, 33.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer3,168,170

CSS custom property--colour: #3057AA;

Brightness & contrast

Relative luminance0.10347WCAG 2.x, 0 is black and 1 is white

Perceived brightness91.8 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.84:1

Contrast with white6.84:1WCAG normal text: AA

Contrast with black3.07:1WCAG normal text: Fail

Greyscale equivalent#555555

Inverted#CFA855

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#2960ADno red cones; affects about 1% of men; ΔE 6.6 from the original

Deuteranopia#0455A8no green cones; the most common form, about 1% of men; ΔE 4.2 from the original

Tritanopia#006B78no blue cones; rare, and affects men and women equally; ΔE 49.7 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text6.84:1WCAG large text: AAA

Contrast with black, large text3.07:1WCAG large text: AA

Named colours

Dark slateblue · ΔE 14.7 Royal blue · ΔE 22 Slate blue · ΔE 23.7 Cornflower blue · ΔE 24.2 Dodgerblue · ΔE 26.2 Medium purple · ΔE 27.2

Nearest named CSS colourDark slateblue (#483D8B)ΔE 14.74, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#AA8330

Analogous#3094AA, #4630AA

Triadic#AA3057, #57AA30

Split complementary#AA4630, #94AA30

Tetradic#AA3094, #AA8330, #30AA46

Tints, shades & saturation

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

Lighter +40%#BACAEC

Lighter +30%#93ABE0

Lighter +20%#6B8DD5

Lighter +10%#436ECA

Darker −10%#254382

Darker −20%#1A2E5A

Darker −30%#0E1A33

Darker −40%#03060B

More saturated +25%#154DC5

Less saturated −25%#4B618F

Channel breakdown

R48

G87

B170

Red48 (18.8%)

Green87 (34.1%)

Blue170 (66.7%)

Hue220.82°

Saturation (HSL)55.96%

Lightness42.75%

Dominant channelBlue

Hex per channelR 30 · G 57 · B AA

Keep nerding

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

#3057AA

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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