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Recognised as Colour

#40448C

  • #40448C
  • Blue
  • Dark
  • Nearest: Dark slateblue

#40448C is a blue with RGB values 64, 68, 140 and HSL 237°, 37%, 40%. It is a dark colour, so white text on it reaches 8.7:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#40448C#40448C
HEX#40448C
RGBrgb(64, 68, 140)
RGB (0–1)0.251, 0.2667, 0.549
RGB percentages25.1%, 26.7%, 54.9%
HSLhsl(236.8, 37.3%, 40%)
HSV / HSBhsv(236.8, 54.3%, 54.9%)
CMYK54.3%, 51.4%, 0%, 45.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,211,852
CSS custom property--colour: #40448C;

Brightness & contrast

Relative luminance0.07118WCAG 2.x, 0 is black and 1 is white
Perceived brightness78.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.67:1
Contrast with white8.67:1WCAG normal text: AAA
Contrast with black2.42:1WCAG normal text: Fail
Greyscale equivalent#484848
Inverted#BFBB73

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#214F8Fno red cones; affects about 1% of men; ΔE 12.1 from the original
Deuteranopia#17488Ano green cones; the most common form, about 1% of men; ΔE 10.5 from the original
Tritanopia#1E5461no blue cones; rare, and affects men and women equally; ΔE 43.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text8.67:1WCAG large text: AAA
Contrast with black, large text2.42:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 6.4Midnight blue · ΔE 21.9Rebecca purple · ΔE 23.8Slate blue · ΔE 26.9Royal blue · ΔE 29.8Medium purple · ΔE 29.9
Nearest named CSS colourDark slateblue (#483D8B)ΔE 6.36, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8C8840
Analogous#406A8C, #62408C
Triadic#8C4044, #448C40
Split complementary#8C6240, #6A8C40
Tetradic#8C406A, #8C8840, #408C62

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B9BBDF
Lighter +30%#9699CF
Lighter +20%#7377BF
Lighter +10%#5055AF
Darker −10%#303369
Darker −20%#202246
Darker −30%#101123
Darker −40%#000000
More saturated +25%#262DA6
Less saturated −25%#5A5B73

Channel breakdown

R64
G68
B140
Red64 (25.1%)
Green68 (26.7%)
Blue140 (54.9%)
Hue236.84°
Saturation (HSL)37.25%
Lightness40%
Dominant channelBlue
Hex per channelR 40 · G 44 · B 8C

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Every value on this page was computed from “40448c” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.