Colour

#284C88

#284C88
Blue
Dark
Nearest: Dark slateblue

#284C88 is a blue with RGB values 40, 76, 136 and HSL 218°, 55%, 35%. It is a dark colour, so white text on it reaches 8.5:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#284C88#284C88

HEX#284C88

RGBrgb(40, 76, 136)

RGB (0–1)0.1569, 0.298, 0.5333

RGB percentages15.7%, 29.8%, 53.3%

HSLhsl(217.5, 54.5%, 34.5%)

HSV / HSBhsv(217.5, 70.6%, 53.3%)

CMYK70.6%, 44.1%, 0%, 46.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer2,641,032

CSS custom property--colour: #284C88;

Brightness & contrast

Relative luminance0.07398WCAG 2.x, 0 is black and 1 is white

Perceived brightness77.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 8.47:1

Contrast with white8.47:1WCAG normal text: AAA

Contrast with black2.48:1WCAG normal text: Fail

Greyscale equivalent#494949

Inverted#D7B377

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#2F528Ano red cones; affects about 1% of men; ΔE 3.8 from the original

Deuteranopia#1F4987no green cones; the most common form, about 1% of men; ΔE 2.1 from the original

Tritanopia#005A63no blue cones; rare, and affects men and women equally; ΔE 37.7 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text8.47:1WCAG large text: AAA

Contrast with black, large text2.48:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 18.4 Steel blue · ΔE 23.9 Midnight blue · ΔE 31.3 Cornflower blue · ΔE 31.6 Slate grey · ΔE 35.1 Rebecca purple · ΔE 35.9

Nearest named CSS colourDark slateblue (#483D8B)ΔE 18.43, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#886428

Analogous#287C88, #342888

Triadic#88284C, #4C8828

Split complementary#883428, #7C8828

Tetradic#88287C, #886428, #288834

Tints, shades & saturation

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

Lighter +40%#9BB5E1

Lighter +30%#7398D6

Lighter +20%#4C7BCA

Lighter +10%#3462AF

Darker −10%#1C3661

Darker −20%#112039

Darker −30%#050A12

Darker −40%#000000

More saturated +25%#12479E

Less saturated −25%#3E5272

Channel breakdown

R40

G76

B136

Red40 (15.7%)

Green76 (29.8%)

Blue136 (53.3%)

Hue217.5°

Saturation (HSL)54.55%

Lightness34.51%

Dominant channelBlue

Hex per channelR 28 · G 4C · B 88

Keep nerding

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

#284C88

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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