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Recognised as Colour

#00409E

  • #00409E
  • Blue
  • Dark
  • Nearest: Dark slateblue

#00409E is a blue with RGB values 0, 64, 158 and HSL 216°, 100%, 31%. It is a dark colour, so white text on it reaches 9.4:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#00409E#00409E
HEX#00409E
RGBrgb(0, 64, 158)
RGB (0–1)0, 0.251, 0.6196
RGB percentages0%, 25.1%, 62%
HSLhsl(215.7, 100%, 31%)
HSV / HSBhsv(215.7, 100%, 62%)
CMYK100%, 59.5%, 0%, 38%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,542
CSS custom property--colour: #00409E;

Brightness & contrast

Relative luminance0.06135WCAG 2.x, 0 is black and 1 is white
Perceived brightness72.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.43:1
Contrast with white9.43:1WCAG normal text: AAA
Contrast with black2.23:1WCAG normal text: Fail
Greyscale equivalent#393939
Inverted#FFBF61

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#004DA1no red cones; affects about 1% of men; ΔE 9.8 from the original
Deuteranopia#00409Cno green cones; the most common form, about 1% of men; ΔE 1.3 from the original
Tritanopia#005868no blue cones; rare, and affects men and women equally; ΔE 55.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.43:1WCAG large text: AAA
Contrast with black, large text2.23:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 14.2Midnight blue · ΔE 18Royal blue · ΔE 20.9Slate blue · ΔE 21.1Rebecca purple · ΔE 22.8Medium purple · ΔE 29.8
Nearest named CSS colourDark slateblue (#483D8B)ΔE 14.17, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#9E5E00
Analogous#008F9E, #0F009E
Triadic#9E0040, #409E00
Split complementary#9E0F00, #8F9E00
Tetradic#9E008F, #9E5E00, #009E0F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#6BA7FF
Lighter +30%#3889FF
Lighter +20%#056AFF
Lighter +10%#0055D1
Darker −10%#002B6B
Darker −20%#001738
Darker −30%#000205
Darker −40%#000000
More saturated +25%#00409E
Less saturated −25%#14448A

Channel breakdown

R0
G64
B158
Red0 (0%)
Green64 (25.1%)
Blue158 (62%)
Hue215.7°
Saturation (HSL)100%
Lightness30.98%
Dominant channelBlue
Hex per channelR 00 · G 40 · B 9E

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Every value on this page was computed from “00409e” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.