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Recognised as Colour

#404BBD

  • #404BBD
  • Blue
  • Dark
  • Nearest: Slate blue

#404BBD is a blue with RGB values 64, 75, 189 and HSL 235°, 49%, 50%. It is a dark colour, so white text on it reaches 7.1:1 contrast (AAA for normal text). The nearest named colour is Slate blue.

Colour values

#404BBD#404BBD
HEX#404BBD
RGBrgb(64, 75, 189)
RGB (0–1)0.251, 0.2941, 0.7412
RGB percentages25.1%, 29.4%, 74.1%
HSLhsl(234.7, 49.4%, 49.6%)
HSV / HSBhsv(234.7, 66.1%, 74.1%)
CMYK66.1%, 60.3%, 0%, 25.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,213,693
CSS custom property--colour: #404BBD;

Brightness & contrast

Relative luminance0.09796WCAG 2.x, 0 is black and 1 is white
Perceived brightness92.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.1:1
Contrast with white7.1:1WCAG normal text: AAA
Contrast with black2.96:1WCAG normal text: Fail
Greyscale equivalent#515151
Inverted#BFB442

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#005EC1no red cones; affects about 1% of men; ΔE 17 from the original
Deuteranopia#0053BBno green cones; the most common form, about 1% of men; ΔE 11.5 from the original
Tritanopia#00677Dno blue cones; rare, and affects men and women equally; ΔE 64.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.1:1WCAG large text: AAA
Contrast with black, large text2.96:1WCAG large text: Fail

Named colours

Slate blue · ΔE 9.4Royal blue · ΔE 12.6Medium slateblue · ΔE 17.5Rebecca purple · ΔE 18.3Medium purple · ΔE 21.3Dark slateblue · ΔE 21.4
Nearest named CSS colourSlate blue (#6A5ACD)ΔE 9.39, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BDB240
Analogous#4089BD, #7440BD
Triadic#BD404B, #4BBD40
Split complementary#BD7440, #89BD40
Tetradic#BD4089, #BDB240, #40BD74

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D7DAF2
Lighter +30%#B1B6E5
Lighter +20%#8B92D8
Lighter +10%#656ECB
Darker −10%#333C97
Darker −20%#262D71
Darker −30%#191E4B
Darker −40%#0C0F25
More saturated +25%#2031DD
Less saturated −25%#60659D

Channel breakdown

R64
G75
B189
Red64 (25.1%)
Green75 (29.4%)
Blue189 (74.1%)
Hue234.72°
Saturation (HSL)49.41%
Lightness49.61%
Dominant channelBlue
Hex per channelR 40 · G 4B · B BD

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Every value on this page was computed from “404bbd” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.