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Recognised as Colour

#403EA8

  • #403EA8
  • Blue
  • Dark
  • Nearest: Slate blue

#403EA8 is a blue with RGB values 64, 62, 168 and HSL 241°, 46%, 45%. It is a dark colour, so white text on it reaches 8.5:1 contrast (AAA for normal text). The nearest named colour is Slate blue.

Colour values

#403EA8#403EA8
HEX#403EA8
RGBrgb(64, 62, 168)
RGB (0–1)0.251, 0.2431, 0.6588
RGB percentages25.1%, 24.3%, 65.9%
HSLhsl(241.1, 46.1%, 45.1%)
HSV / HSBhsv(241.1, 63.1%, 65.9%)
CMYK61.9%, 63.1%, 0%, 34.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,210,344
CSS custom property--colour: #403EA8;

Brightness & contrast

Relative luminance0.07362WCAG 2.x, 0 is black and 1 is white
Perceived brightness81.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.49:1
Contrast with white8.49:1WCAG normal text: AAA
Contrast with black2.47:1WCAG normal text: Fail
Greyscale equivalent#464646
Inverted#BFC157

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0051ABno red cones; affects about 1% of men; ΔE 18.2 from the original
Deuteranopia#0048A6no green cones; the most common form, about 1% of men; ΔE 13.7 from the original
Tritanopia#00586Dno blue cones; rare, and affects men and women equally; ΔE 61.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text8.49:1WCAG large text: AAA
Contrast with black, large text2.47:1WCAG large text: Fail

Named colours

Slate blue · ΔE 13Rebecca purple · ΔE 13.6Dark slateblue · ΔE 16.6Midnight blue · ΔE 18.3Royal blue · ΔE 18.8Indigo · ΔE 22.2
Nearest named CSS colourSlate blue (#6A5ACD)ΔE 13.03, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A6A83E
Analogous#3E71A8, #753EA8
Triadic#A8403E, #3EA840
Split complementary#A8753E, #71A83E
Tetradic#A83E71, #A6A83E, #3EA875

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C8C7EB
Lighter +30%#A3A2DD
Lighter +20%#7F7DCF
Lighter +10%#5A58C1
Darker −10%#323083
Darker −20%#24235D
Darker −30%#151538
Darker −40%#070713
More saturated +25%#2421C5
Less saturated −25%#5C5B8B

Channel breakdown

R64
G62
B168
Red64 (25.1%)
Green62 (24.3%)
Blue168 (65.9%)
Hue241.13°
Saturation (HSL)46.09%
Lightness45.1%
Dominant channelBlue
Hex per channelR 40 · G 3E · B A8

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Every value on this page was computed from “403ea8” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.