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Colour

#40599E

  • #40599E
  • Blue
  • Dark
  • Nearest: Dark slateblue

#40599E is a blue with RGB values 64, 89, 158 and HSL 224°, 42%, 44%. It is a dark colour, so white text on it reaches 6.7:1 contrast (AA for normal text). The nearest named colour is Dark slateblue.

Colour values

#40599E#40599E
HEX#40599E
RGBrgb(64, 89, 158)
RGB (0–1)0.251, 0.349, 0.6196
RGB percentages25.1%, 34.9%, 62%
HSLhsl(224, 42.3%, 43.5%)
HSV / HSBhsv(224, 59.5%, 62%)
CMYK59.5%, 43.7%, 0%, 38%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,217,246
CSS custom property--colour: #40599E;

Brightness & contrast

Relative luminance0.10703WCAG 2.x, 0 is black and 1 is white
Perceived brightness93.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.69:1
Contrast with white6.69:1WCAG normal text: AA
Contrast with black3.14:1WCAG normal text: Fail
Greyscale equivalent#595959
Inverted#BFA661

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3A61A1no red cones; affects about 1% of men; ΔE 5.9 from the original
Deuteranopia#2E589Dno green cones; the most common form, about 1% of men; ΔE 3.6 from the original
Tritanopia#006874no blue cones; rare, and affects men and women equally; ΔE 42.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text6.69:1WCAG large text: AAA
Contrast with black, large text3.14:1WCAG large text: AA

Named colours

Dark slateblue · ΔE 16Steel blue · ΔE 22.8Cornflower blue · ΔE 24.7Royal blue · ΔE 29.7Slate blue · ΔE 29.9Medium purple · ΔE 30.7
Nearest named CSS colourDark slateblue (#483D8B)ΔE 16, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#9E8540
Analogous#40889E, #56409E
Triadic#9E4059, #599E40
Split complementary#9E5640, #889E40
Tetradic#9E4088, #9E8540, #409E56

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C3CDE7
Lighter +30%#9FAED8
Lighter +20%#7B90C9
Lighter +10%#5671BB
Darker −10%#31457A
Darker −20%#233055
Darker −30%#141C31
Darker −40%#05070D
More saturated +25%#244CBA
Less saturated −25%#5C6682

Channel breakdown

R64
G89
B158
Red64 (25.1%)
Green89 (34.9%)
Blue158 (62%)
Hue224.04°
Saturation (HSL)42.34%
Lightness43.53%
Dominant channelBlue
Hex per channelR 40 · G 59 · B 9E

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Every value on this page was computed from “40599e” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.