Colour

#283C63

#283C63
Blue
Dark
Nearest: Dark slateblue

#283C63 is a blue with RGB values 40, 60, 99 and HSL 220°, 42%, 27%. It is a dark colour, so white text on it reaches 11:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#283C63#283C63

HEX#283C63

RGBrgb(40, 60, 99)

RGB (0–1)0.1569, 0.2353, 0.3882

RGB percentages15.7%, 23.5%, 38.8%

HSLhsl(219.7, 42.4%, 27.3%)

HSV / HSBhsv(219.7, 59.6%, 38.8%)

CMYK59.6%, 39.4%, 0%, 61.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer2,636,899

CSS custom property--colour: #283C63;

Brightness & contrast

Relative luminance0.04584WCAG 2.x, 0 is black and 1 is white

Perceived brightness60.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 10.96:1

Contrast with white10.96:1WCAG normal text: AAA

Contrast with black1.92:1WCAG normal text: Fail

Greyscale equivalent#3B3B3B

Inverted#D7C39C

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#2C3F65no red cones; affects about 1% of men; ΔE 1.6 from the original

Deuteranopia#253A62no green cones; the most common form, about 1% of men; ΔE 1.2 from the original

Tritanopia#03454Ano blue cones; rare, and affects men and women equally; ΔE 27.6 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text10.96:1WCAG large text: AAA

Contrast with black, large text1.92:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 27.2 Dark slate grey · ΔE 28.1 Steel blue · ΔE 29.3 Slate grey · ΔE 32 Dim grey · ΔE 32.1 Light slate grey · ΔE 34.4

Nearest named CSS colourDark slateblue (#483D8B)ΔE 27.24, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#634F28

Analogous#285A63, #322863

Triadic#63283C, #3C6328

Split complementary#633228, #5A6328

Tetradic#63285A, #634F28, #286332

Tints, shades & saturation

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

Lighter +40%#88A0CF

Lighter +30%#6483C0

Lighter +20%#4568AC

Lighter +10%#375287

Darker −10%#19263F

Darker −20%#0B101A

Darker −30%#000000

Darker −40%#000000

More saturated +25%#173674

Less saturated −25%#394252

Channel breakdown

R40

G60

B99

Red40 (15.7%)

Green60 (23.5%)

Blue99 (38.8%)

Hue219.66°

Saturation (HSL)42.45%

Lightness27.25%

Dominant channelBlue

Hex per channelR 28 · G 3C · B 63

Keep nerding

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

#283C63

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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