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Recognised as Colour

#063FB3

  • #063FB3
  • Blue
  • Dark
  • Nearest: Slate blue

#063FB3 is a blue with RGB values 6, 63, 179 and HSL 220°, 94%, 36%. It is a dark colour, so white text on it reaches 8.9:1 contrast (AAA for normal text). The nearest named colour is Slate blue.

Colour values

#063FB3#063FB3
HEX#063FB3
RGBrgb(6, 63, 179)
RGB (0–1)0.0235, 0.2471, 0.702
RGB percentages2.4%, 24.7%, 70.2%
HSLhsl(220.2, 93.5%, 36.3%)
HSV / HSBhsv(220.2, 96.6%, 70.2%)
CMYK96.6%, 64.8%, 0%, 29.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer409,523
CSS custom property--colour: #063FB3;

Brightness & contrast

Relative luminance0.06848WCAG 2.x, 0 is black and 1 is white
Perceived brightness77.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.86:1
Contrast with white8.86:1WCAG normal text: AAA
Contrast with black2.37:1WCAG normal text: Fail
Greyscale equivalent#3B3B3B
Inverted#F9C04C

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0052B7no red cones; affects about 1% of men; ΔE 14.2 from the original
Deuteranopia#0043B1no green cones; the most common form, about 1% of men; ΔE 4.5 from the original
Tritanopia#005E73no blue cones; rare, and affects men and women equally; ΔE 66.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text8.86:1WCAG large text: AAA
Contrast with black, large text2.37:1WCAG large text: Fail

Named colours

Slate blue · ΔE 16.5Royal blue · ΔE 17.2Rebecca purple · ΔE 21.6Midnight blue · ΔE 22.2Medium slateblue · ΔE 22.9Dark slateblue · ΔE 23.9
Nearest named CSS colourSlate blue (#6A5ACD)ΔE 16.51, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B37A06
Analogous#0696B3, #2306B3
Triadic#B3063F, #3FB306
Split complementary#B32406, #95B306
Tetradic#B30696, #B37A06, #06B323

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8AAFFB
Lighter +30%#598EF9
Lighter +20%#276CF8
Lighter +10%#0850E4
Darker −10%#042E82
Darker −20%#031C50
Darker −30%#010B1F
Darker −40%#000000
More saturated +25%#003DB9
Less saturated −25%#1D479C

Channel breakdown

R6
G63
B179
Red6 (2.4%)
Green63 (24.7%)
Blue179 (70.2%)
Hue220.23°
Saturation (HSL)93.51%
Lightness36.27%
Dominant channelBlue
Hex per channelR 06 · G 3F · B B3

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Every value on this page was computed from “063fb3” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.