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Recognised as Colour

#003680

  • #003680
  • Blue
  • Dark
  • Nearest: Dark slateblue

#003680 is a blue with RGB values 0, 54, 128 and HSL 215°, 100%, 25%. It is a dark colour, so white text on it reaches 11.4:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#003680#003680
HEX#003680
RGBrgb(0, 54, 128)
RGB (0–1)0, 0.2118, 0.502
RGB percentages0%, 21.2%, 50.2%
HSLhsl(214.7, 100%, 25.1%)
HSV / HSBhsv(214.7, 100%, 50.2%)
CMYK100%, 57.8%, 0%, 49.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer13,952
CSS custom property--colour: #003680;

Brightness & contrast

Relative luminance0.04197WCAG 2.x, 0 is black and 1 is white
Perceived brightness59.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.42:1
Contrast with white11.42:1WCAG normal text: AAA
Contrast with black1.84:1WCAG normal text: Fail
Greyscale equivalent#303030
Inverted#FFC97F

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#003F83no red cones; affects about 1% of men; ΔE 6.6 from the original
Deuteranopia#00357Fno green cones; the most common form, about 1% of men; ΔE 0.5 from the original
Tritanopia#004955no blue cones; rare, and affects men and women equally; ΔE 45.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text11.42:1WCAG large text: AAA
Contrast with black, large text1.84:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 12.4Midnight blue · ΔE 18Rebecca purple · ΔE 28Slate blue · ΔE 31.2Royal blue · ΔE 32Indigo · ΔE 36.4
Nearest named CSS colourDark slateblue (#483D8B)ΔE 12.41, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#804A00
Analogous#007680, #0A0080
Triadic#800036, #368000
Split complementary#800A00, #768000
Tetradic#800076, #804A00, #00800A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#4D98FF
Lighter +30%#1A7BFF
Lighter +20%#0061E6
Lighter +10%#004CB3
Darker −10%#00204D
Darker −20%#000B1A
Darker −30%#000000
Darker −40%#000000
More saturated +25%#003680
Less saturated −25%#103970

Channel breakdown

R0
G54
B128
Red0 (0%)
Green54 (21.2%)
Blue128 (50.2%)
Hue214.69°
Saturation (HSL)100%
Lightness25.1%
Dominant channelBlue
Hex per channelR 00 · G 36 · B 80

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Every value on this page was computed from “hex 003680” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.