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Recognised as Colour

#3F7DBF

  • #3F7DBF
  • Blue
  • Dark
  • Nearest: Steel blue

#3F7DBF is a blue with RGB values 63, 125, 191 and HSL 211°, 50%, 50%. It is a dark colour, so black text on it reaches 4.9:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#3F7DBF#3F7DBF
HEX#3F7DBF
RGBrgb(63, 125, 191)
RGB (0–1)0.2471, 0.4902, 0.749
RGB percentages24.7%, 49%, 74.9%
HSLhsl(210.9, 50.4%, 49.8%)
HSV / HSBhsv(210.9, 67%, 74.9%)
CMYK67%, 34.6%, 0%, 25.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,160,959
CSS custom property--colour: #3F7DBF;

Brightness & contrast

Relative luminance0.19486WCAG 2.x, 0 is black and 1 is white
Perceived brightness120.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.9:1
Contrast with white4.29:1WCAG normal text: Fail
Contrast with black4.9:1WCAG normal text: AA
Greyscale equivalent#757575
Inverted#C08240

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#6081C2no red cones; affects about 1% of men; ΔE 6.7 from the original
Deuteranopia#4E75BEno green cones; the most common form, about 1% of men; ΔE 7.8 from the original
Tritanopia#008C95no blue cones; rare, and affects men and women equally; ΔE 39.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text4.29:1WCAG large text: AA
Contrast with black, large text4.9:1WCAG large text: AAA

Named colours

Steel blue · ΔE 10Cornflower blue · ΔE 16Dodgerblue · ΔE 25.8Deep skyblue · ΔE 28.6Light slate grey · ΔE 29.9Slate grey · ΔE 30.1
Nearest named CSS colourSteel blue (#4682B4)ΔE 9.96, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BF813F
Analogous#3FBDBF, #413FBF
Triadic#BF3F7D, #7DBF3F
Split complementary#BF413F, #BDBF3F
Tetradic#BF3FBD, #BF813F, #3FBF41

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D8E5F2
Lighter +30%#B2CBE5
Lighter +20%#8BB1D9
Lighter +10%#6597CC
Darker −10%#326499
Darker −20%#264B72
Darker −30%#19324C
Darker −40%#0C1926
More saturated +25%#1F7CDF
Less saturated −25%#5F7E9F

Channel breakdown

R63
G125
B191
Red63 (24.7%)
Green125 (49%)
Blue191 (74.9%)
Hue210.94°
Saturation (HSL)50.39%
Lightness49.8%
Dominant channelBlue
Hex per channelR 3F · G 7D · B BF

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Every value on this page was computed from “3f7dbf” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.