Colour

#284D88

#284D88
Blue
Dark
Nearest: Dark slateblue

#284D88 is a blue with RGB values 40, 77, 136 and HSL 217°, 55%, 35%. It is a dark colour, so white text on it reaches 8.4:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#284D88#284D88

HEX#284D88

RGBrgb(40, 77, 136)

RGB (0–1)0.1569, 0.302, 0.5333

RGB percentages15.7%, 30.2%, 53.3%

HSLhsl(216.9, 54.5%, 34.5%)

HSV / HSBhsv(216.9, 70.6%, 53.3%)

CMYK70.6%, 43.4%, 0%, 46.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer2,641,288

CSS custom property--colour: #284D88;

Brightness & contrast

Relative luminance0.07536WCAG 2.x, 0 is black and 1 is white

Perceived brightness77.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 8.38:1

Contrast with white8.38:1WCAG normal text: AAA

Contrast with black2.51:1WCAG normal text: Fail

Greyscale equivalent#494949

Inverted#D7B277

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#31528Ano red cones; affects about 1% of men; ΔE 3 from the original

Deuteranopia#214987no green cones; the most common form, about 1% of men; ΔE 2.7 from the original

Tritanopia#005B64no blue cones; rare, and affects men and women equally; ΔE 37 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text8.38:1WCAG large text: AAA

Contrast with black, large text2.51:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 19.2 Steel blue · ΔE 23.2 Cornflower blue · ΔE 31.5 Midnight blue · ΔE 32.1 Slate grey · ΔE 34.4 Light slate grey · ΔE 35.9

Nearest named CSS colourDark slateblue (#483D8B)ΔE 19.23, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#886328

Analogous#287D88, #332888

Triadic#88284D, #4D8828

Split complementary#883328, #7D8828

Tetradic#88287D, #886328, #288833

Tints, shades & saturation

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

Lighter +40%#9BB6E1

Lighter +30%#7399D6

Lighter +20%#4C7CCA

Lighter +10%#3463AF

Darker −10%#1C3761

Darker −20%#112039

Darker −30%#050A12

Darker −40%#000000

More saturated +25%#12489E

Less saturated −25%#3E5272

Channel breakdown

R40

G77

B136

Red40 (15.7%)

Green77 (30.2%)

Blue136 (53.3%)

Hue216.88°

Saturation (HSL)54.55%

Lightness34.51%

Dominant channelBlue

Hex per channelR 28 · G 4D · B 88

Keep nerding

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

#284D88

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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