Nerdulator> put something in

Recognised as Colour

#3F477C

  • #3F477C
  • Blue
  • Dark
  • Nearest: Dark slateblue

#3F477C is a blue with RGB values 63, 71, 124 and HSL 232°, 33%, 37%. It is a dark colour, so white text on it reaches 8.7:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#3F477C#3F477C
HEX#3F477C
RGBrgb(63, 71, 124)
RGB (0–1)0.2471, 0.2784, 0.4863
RGB percentages24.7%, 27.8%, 48.6%
HSLhsl(232.1, 32.6%, 36.7%)
HSV / HSBhsv(232.1, 49.2%, 48.6%)
CMYK49.2%, 42.7%, 0%, 51.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,147,068
CSS custom property--colour: #3F477C;

Brightness & contrast

Relative luminance0.07018WCAG 2.x, 0 is black and 1 is white
Perceived brightness76.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.74:1
Contrast with white8.74:1WCAG normal text: AAA
Contrast with black2.4:1WCAG normal text: Fail
Greyscale equivalent#494949
Inverted#C0B883

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#334E7Eno red cones; affects about 1% of men; ΔE 7.1 from the original
Deuteranopia#2D497Bno green cones; the most common form, about 1% of men; ΔE 6 from the original
Tritanopia#28525Bno blue cones; rare, and affects men and women equally; ΔE 32.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text8.74:1WCAG large text: AAA
Contrast with black, large text2.4:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 17.5Steel blue · ΔE 26.4Midnight blue · ΔE 31.1Slate grey · ΔE 32.8Rebecca purple · ΔE 34.5Light slate grey · ΔE 34.6
Nearest named CSS colourDark slateblue (#483D8B)ΔE 17.54, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#7C743F
Analogous#3F657C, #563F7C
Triadic#7C3F47, #477C3F
Split complementary#7C553F, #667C3F
Tetradic#7C3F65, #7C743F, #3F7C56

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B0B5D7
Lighter +30%#8E96C6
Lighter +20%#6C76B5
Lighter +10%#505A9E
Darker −10%#2E345A
Darker −20%#1D2038
Darker −30%#0B0D17
Darker −40%#000000
More saturated +25%#283693
Less saturated −25%#565865

Channel breakdown

R63
G71
B124
Red63 (24.7%)
Green71 (27.8%)
Blue124 (48.6%)
Hue232.13°
Saturation (HSL)32.62%
Lightness36.67%
Dominant channelBlue
Hex per channelR 3F · G 47 · B 7C

Keep nerding

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

Nerdulate something else

Nothing in mind? Surprise me · today’s page

Every value on this page was computed from “3f477c” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.