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Recognised as Colour

#399AFD

  • #399AFD
  • Blue
  • Dark
  • Nearest: Dodgerblue

#399AFD is a blue with RGB values 57, 154, 253 and HSL 210°, 98%, 61%. It is a dark colour, so black text on it reaches 7.2:1 contrast (AAA for normal text). The nearest named colour is Dodgerblue.

Colour values

#399AFD#399AFD
HEX#399AFD
RGBrgb(57, 154, 253)
RGB (0–1)0.2235, 0.6039, 0.9922
RGB percentages22.4%, 60.4%, 99.2%
HSLhsl(210.3, 98%, 60.8%)
HSV / HSBhsv(210.3, 77.5%, 99.2%)
CMYK77.5%, 39.1%, 0%, 0.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,775,229
CSS custom property--colour: #399AFD;

Brightness & contrast

Relative luminance0.31073WCAG 2.x, 0 is black and 1 is white
Perceived brightness149 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 7.21:1
Contrast with white2.91:1WCAG normal text: Fail
Contrast with black7.21:1WCAG normal text: AAA
Greyscale equivalent#8D8D8D
Inverted#C66502

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#6AA1FFno red cones; affects about 1% of men; ΔE 7.4 from the original
Deuteranopia#4A8FFBno green cones; the most common form, about 1% of men; ΔE 8.9 from the original
Tritanopia#00B2BFno blue cones; rare, and affects men and women equally; ΔE 55.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.91:1WCAG large text: Fail
Contrast with black, large text7.21:1WCAG large text: AAA

Named colours

Dodgerblue · ΔE 8.3Cornflower blue · ΔE 8.8Royal blue · ΔE 26.8Steel blue · ΔE 28.6Deep skyblue · ΔE 29.1Medium purple · ΔE 33.1
Nearest named CSS colourDodgerblue (#1E90FF)ΔE 8.35, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FD9C39
Analogous#39FCFD, #3A39FD
Triadic#FD399A, #9AFD39
Split complementary#FD3A39, #FCFD39
Tetradic#FD39FC, #FD9C39, #39FD3A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#D0E7FF
Lighter +20%#9ECEFE
Lighter +10%#6BB4FE
Darker −10%#0780FC
Darker −20%#0267CE
Darker −30%#024E9B
Darker −40%#013469
More saturated +25%#379AFF
Less saturated −25%#529AE4

Channel breakdown

R57
G154
B253
Red57 (22.4%)
Green154 (60.4%)
Blue253 (99.2%)
Hue210.31°
Saturation (HSL)98%
Lightness60.78%
Dominant channelBlue
Hex per channelR 39 · G 9A · B FD

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Every value on this page was computed from “399afd” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.