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Colour

#3A40DB

  • #3A40DB
  • Blue
  • Dark
  • Nearest: Medium slateblue

#3A40DB is a blue with RGB values 58, 64, 219 and HSL 238°, 69%, 54%. It is a dark colour, so white text on it reaches 7.2:1 contrast (AAA for normal text). The nearest named colour is Medium slateblue.

Colour values

#3A40DB#3A40DB
HEX#3A40DB
RGBrgb(58, 64, 219)
RGB (0–1)0.2275, 0.251, 0.8588
RGB percentages22.7%, 25.1%, 85.9%
HSLhsl(237.8, 69.1%, 54.3%)
HSV / HSBhsv(237.8, 73.5%, 85.9%)
CMYK73.5%, 70.8%, 0%, 14.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,817,691
CSS custom property--colour: #3A40DB;

Brightness & contrast

Relative luminance0.09681WCAG 2.x, 0 is black and 1 is white
Perceived brightness94.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.15:1
Contrast with white7.15:1WCAG normal text: AAA
Contrast with black2.94:1WCAG normal text: Fail
Greyscale equivalent#4A4A4A
Inverted#C5BF24

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#005FE0no red cones; affects about 1% of men; ΔE 23 from the original
Deuteranopia#0050D8no green cones; the most common form, about 1% of men; ΔE 15 from the original
Tritanopia#006C89no blue cones; rare, and affects men and women equally; ΔE 84.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.15:1WCAG large text: AAA
Contrast with black, large text2.94:1WCAG large text: Fail

Named colours

Medium slateblue · ΔE 21.6Blue violet · ΔE 22.3Dark blue · ΔE 24.9Medium blue · ΔE 25.5Dark orchid · ΔE 26Slate blue · ΔE 26
Nearest named CSS colourMedium slateblue (#7B68EE)ΔE 21.61, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DBD53A
Analogous#3A91DB, #843ADB
Triadic#DB3A40, #40DB3A
Split complementary#DB853A, #90DB3A
Tetradic#DB3A91, #DBD53A, #3ADB85

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E6E7FB
Lighter +30%#BBBDF3
Lighter +20%#9094EB
Lighter +10%#656AE3
Darker −10%#2329BF
Darker −20%#1B2094
Darker −30%#131669
Darker −40%#0B0D3E
More saturated +25%#1D25F8
Less saturated −25%#575BBE

Channel breakdown

R58
G64
B219
Red58 (22.7%)
Green64 (25.1%)
Blue219 (85.9%)
Hue237.76°
Saturation (HSL)69.1%
Lightness54.31%
Dominant channelBlue
Hex per channelR 3A · G 40 · B DB

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Every value on this page was computed from “3a40db” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.