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Recognised as Colour

#3F7EA3

  • #3F7EA3
  • Blue
  • Dark
  • Nearest: Steel blue

#3F7EA3 is a blue with RGB values 63, 126, 163 and HSL 202°, 44%, 44%. It is a dark colour, so black text on it reaches 4.7:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#3F7EA3#3F7EA3
HEX#3F7EA3
RGBrgb(63, 126, 163)
RGB (0–1)0.2471, 0.4941, 0.6392
RGB percentages24.7%, 49.4%, 63.9%
HSLhsl(202.2, 44.2%, 44.3%)
HSV / HSBhsv(202.2, 61.3%, 63.9%)
CMYK61.3%, 22.7%, 0%, 36.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,161,187
CSS custom property--colour: #3F7EA3;

Brightness & contrast

Relative luminance0.18623WCAG 2.x, 0 is black and 1 is white
Perceived brightness116.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.72:1
Contrast with white4.44:1WCAG normal text: Fail
Contrast with black4.72:1WCAG normal text: AA
Greyscale equivalent#737373
Inverted#C0815C

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#6D7DA5no red cones; affects about 1% of men; ΔE 13.3 from the original
Deuteranopia#5F73A2no green cones; the most common form, about 1% of men; ΔE 14.1 from the original
Tritanopia#00888Ano blue cones; rare, and affects men and women equally; ΔE 26.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text4.44:1WCAG large text: AA
Contrast with black, large text4.72:1WCAG large text: AAA

Named colours

Steel blue · ΔE 8.2Slate grey · ΔE 16.8Light slate grey · ΔE 17.1Cadetblue · ΔE 24Teal · ΔE 26.6Gray · ΔE 27.5
Nearest named CSS colourSteel blue (#4682B4)ΔE 8.2, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A3643F
Analogous#3FA396, #3F4CA3
Triadic#A33F7E, #7EA33F
Split complementary#A33F4C, #A3963F
Tetradic#963FA3, #A3643F, #4CA33F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C5DCE9
Lighter +30%#A1C5DA
Lighter +20%#7CAECC
Lighter +10%#5798BE
Darker −10%#31627E
Darker −20%#234559
Darker −30%#142935
Darker −40%#060C10
More saturated +25%#2385BF
Less saturated −25%#5B7787

Channel breakdown

R63
G126
B163
Red63 (24.7%)
Green126 (49.4%)
Blue163 (63.9%)
Hue202.2°
Saturation (HSL)44.25%
Lightness44.31%
Dominant channelBlue
Hex per channelR 3F · G 7E · B A3

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Every value on this page was computed from “3f7ea3” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.