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Recognised as Colour

#003F6F

  • #003F6F
  • Blue
  • Dark
  • Nearest: Dark slateblue

#003F6F is a blue with RGB values 0, 63, 111 and HSL 206°, 100%, 22%. It is a dark colour, so white text on it reaches 10.8:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#003F6F#003F6F
HEX#003F6F
RGBrgb(0, 63, 111)
RGB (0–1)0, 0.2471, 0.4353
RGB percentages0%, 24.7%, 43.5%
HSLhsl(205.9, 100%, 21.8%)
HSV / HSBhsv(205.9, 100%, 43.5%)
CMYK100%, 43.2%, 0%, 56.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,239
CSS custom property--colour: #003F6F;

Brightness & contrast

Relative luminance0.04703WCAG 2.x, 0 is black and 1 is white
Perceived brightness61.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.82:1
Contrast with white10.82:1WCAG normal text: AAA
Contrast with black1.94:1WCAG normal text: Fail
Greyscale equivalent#353535
Inverted#FFC090

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#264271no red cones; affects about 1% of men; ΔE 4.8 from the original
Deuteranopia#13396Eno green cones; the most common form, about 1% of men; ΔE 6 from the original
Tritanopia#004B51no blue cones; rare, and affects men and women equally; ΔE 30.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text10.82:1WCAG large text: AAA
Contrast with black, large text1.94:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 26Steel blue · ΔE 27.4Dark slate grey · ΔE 32.6Slate grey · ΔE 35.2Midnight blue · ΔE 35.3Light slate grey · ΔE 37.3
Nearest named CSS colourDark slateblue (#483D8B)ΔE 25.98, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#6F3000
Analogous#006F68, #00076F
Triadic#6F003F, #3F6F00
Split complementary#6F0007, #6F6700
Tetradic#68006F, #6F3000, #086F00

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#3CABFF
Lighter +30%#0995FF
Lighter +20%#0079D5
Lighter +10%#005CA2
Darker −10%#00223C
Darker −20%#000509
Darker −30%#000000
Darker −40%#000000
More saturated +25%#003F6F
Less saturated −25%#0E3D61

Channel breakdown

R0
G63
B111
Red0 (0%)
Green63 (24.7%)
Blue111 (43.5%)
Hue205.95°
Saturation (HSL)100%
Lightness21.76%
Dominant channelBlue
Hex per channelR 00 · G 3F · B 6F

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Every value on this page was computed from “003f6f” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.