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Recognised as Colour

#3FACF9

  • #3FACF9
  • Blue
  • Dark
  • Nearest: Deep skyblue

#3FACF9 is a blue with RGB values 63, 172, 249 and HSL 205°, 94%, 61%. It is a dark colour, so black text on it reaches 8.5:1 contrast (AAA for normal text). The nearest named colour is Deep skyblue.

Colour values

#3FACF9#3FACF9
HEX#3FACF9
RGBrgb(63, 172, 249)
RGB (0–1)0.2471, 0.6745, 0.9765
RGB percentages24.7%, 67.5%, 97.6%
HSLhsl(204.8, 93.9%, 61.2%)
HSV / HSBhsv(204.8, 74.7%, 97.6%)
CMYK74.7%, 30.9%, 0%, 2.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,173,049
CSS custom property--colour: #3FACF9;

Brightness & contrast

Relative luminance0.37401WCAG 2.x, 0 is black and 1 is white
Perceived brightness160.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 8.48:1
Contrast with white2.48:1WCAG normal text: Fail
Contrast with black8.48:1WCAG normal text: AAA
Greyscale equivalent#9A9A9A
Inverted#C05306

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#88AEFCno red cones; affects about 1% of men; ΔE 14.2 from the original
Deuteranopia#6E9DF8no green cones; the most common form, about 1% of men; ΔE 16.3 from the original
Tritanopia#00BFC7no blue cones; rare, and affects men and women equally; ΔE 44.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.48:1WCAG large text: Fail
Contrast with black, large text8.48:1WCAG large text: AAA

Named colours

Deep skyblue · ΔE 13.7Cornflower blue · ΔE 16.2Steel blue · ΔE 21.2Light skyblue · ΔE 22.8Dodgerblue · ΔE 24.1Sky blue · ΔE 29.7
Nearest named CSS colourDeep skyblue (#00BFFF)ΔE 13.74, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#F98C3F
Analogous#3FF9E9, #3F4FF9
Triadic#F93FAC, #ACF93F
Split complementary#F93F4F, #F9E93F
Tetradic#E93FF9, #F98C3F, #4FF93F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#D3ECFE
Lighter +20%#A2D7FC
Lighter +10%#70C1FB
Darker −10%#0E97F7
Darker −20%#067ACC
Darker −30%#055C9A
Darker −40%#033F69
More saturated +25%#39ADFF
Less saturated −25%#58A8E0

Channel breakdown

R63
G172
B249
Red63 (24.7%)
Green172 (67.5%)
Blue249 (97.6%)
Hue204.84°
Saturation (HSL)93.94%
Lightness61.18%
Dominant channelBlue
Hex per channelR 3F · G AC · B F9

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Every value on this page was computed from “3facf9” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.