Colour

#3F6781

#3F6781
Blue
Dark
Nearest: Slate grey

#3F6781 is a blue with RGB values 63, 103, 129 and HSL 204°, 34%, 38%. It is a dark colour, so white text on it reaches 6.1:1 contrast (AA for normal text). The nearest named colour is Slate grey.

Colour values

#3F6781#3F6781

HEX#3F6781

RGBrgb(63, 103, 129)

RGB (0–1)0.2471, 0.4039, 0.5059

RGB percentages24.7%, 40.4%, 50.6%

HSLhsl(203.6, 34.4%, 37.6%)

HSV / HSBhsv(203.6, 51.2%, 50.6%)

CMYK51.2%, 20.2%, 0%, 49.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer4,155,265

CSS custom property--colour: #3F6781;

Brightness & contrast

Relative luminance0.12342WCAG 2.x, 0 is black and 1 is white

Perceived brightness96.5 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.05:1

Contrast with white6.05:1WCAG normal text: AA

Contrast with black3.47:1WCAG normal text: Fail

Greyscale equivalent#606060

Inverted#C0987E

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#5B6682no red cones; affects about 1% of men; ΔE 9.4 from the original

Deuteranopia#525F81no green cones; the most common form, about 1% of men; ΔE 10.5 from the original

Tritanopia#1E6E70no blue cones; rare, and affects men and women equally; ΔE 19.4 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text6.05:1WCAG large text: AAA

Contrast with black, large text3.47:1WCAG large text: AA

Named colours

Slate grey · ΔE 14.4 Light slate grey · ΔE 16.6 Steel blue · ΔE 17.3 Dark slate grey · ΔE 19.2 Dim grey · ΔE 20 Gray · ΔE 23.1

Nearest named CSS colourSlate grey (#708090)ΔE 14.42, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#81593F

Analogous#3F817A, #3F4681

Triadic#813F67, #67813F

Split complementary#813F46, #817A3F

Tetradic#7A3F81, #81593F, #46813F

Tints, shades & saturation

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

Lighter +40%#B2CADA

Lighter +30%#90B3C9

Lighter +20%#6E9BB8

Lighter +10%#5082A3

Darker −10%#2E4C5F

Darker −20%#1E303C

Darker −30%#0D151A

Darker −40%#000000

More saturated +25%#276C99

Less saturated −25%#576269

Channel breakdown

R63

G103

B129

Red63 (24.7%)

Green103 (40.4%)

Blue129 (50.6%)

Hue203.64°

Saturation (HSL)34.37%

Lightness37.65%

Dominant channelBlue

Hex per channelR 3F · G 67 · B 81

Keep nerding

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

#3F6781

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

Nerdulate something else