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Colour

#4087FF

  • #4087FF
  • Blue
  • Dark
  • Nearest: Dodgerblue

#4087FF is a blue with RGB values 64, 135, 255 and HSL 218°, 100%, 63%. It is a dark colour, so black text on it reaches 6.1:1 contrast (AA for normal text). The nearest named colour is Dodgerblue.

Colour values

#4087FF#4087FF
HEX#4087FF
RGBrgb(64, 135, 255)
RGB (0–1)0.251, 0.5294, 1
RGB percentages25.1%, 52.9%, 100%
HSLhsl(217.7, 100%, 62.5%)
HSV / HSBhsv(217.7, 74.9%, 100%)
CMYK74.9%, 47.1%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,229,119
CSS custom property--colour: #4087FF;

Brightness & contrast

Relative luminance0.25638WCAG 2.x, 0 is black and 1 is white
Perceived brightness139.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.13:1
Contrast with white3.43:1WCAG normal text: Fail
Contrast with black6.13:1WCAG normal text: AA
Greyscale equivalent#818181
Inverted#BF7800

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#4494FFno red cones; affects about 1% of men; ΔE 10.1 from the original
Deuteranopia#0082FDno green cones; the most common form, about 1% of men; ΔE 4.3 from the original
Tritanopia#00A4B7no blue cones; rare, and affects men and women equally; ΔE 65.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.43:1WCAG large text: AA
Contrast with black, large text6.13:1WCAG large text: AAA

Named colours

Dodgerblue · ΔE 8.9Royal blue · ΔE 12.7Cornflower blue · ΔE 19.5Slate blue · ΔE 23.2Medium slateblue · ΔE 23.4Medium purple · ΔE 24.6
Nearest named CSS colourDodgerblue (#1E90FF)ΔE 8.92, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FFB840
Analogous#40E6FF, #5940FF
Triadic#FF4087, #87FF40
Split complementary#FF5940, #E6FF40
Tetradic#FF40E6, #FFB840, #40FF59

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#D9E7FF
Lighter +20%#A6C7FF
Lighter +10%#73A7FF
Darker −10%#0D67FF
Darker −20%#0051D9
Darker −30%#003EA6
Darker −40%#002B73
More saturated +25%#4087FF
Less saturated −25%#588DE7

Channel breakdown

R64
G135
B255
Red64 (25.1%)
Green135 (52.9%)
Blue255 (100%)
Hue217.7°
Saturation (HSL)100%
Lightness62.55%
Dominant channelBlue
Hex per channelR 40 · G 87 · B FF

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Every value on this page was computed from “4087ff” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.