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Recognised as Colour

#0D3FB8

  • #0D3FB8
  • Blue
  • Dark
  • Nearest: Slate blue

#0D3FB8 is a blue with RGB values 13, 63, 184 and HSL 222°, 87%, 39%. It is a dark colour, so white text on it reaches 8.7:1 contrast (AAA for normal text). The nearest named colour is Slate blue.

Colour values

#0D3FB8#0D3FB8
HEX#0D3FB8
RGBrgb(13, 63, 184)
RGB (0–1)0.051, 0.2471, 0.7216
RGB percentages5.1%, 24.7%, 72.2%
HSLhsl(222.5, 86.8%, 38.6%)
HSV / HSBhsv(222.5, 92.9%, 72.2%)
CMYK92.9%, 65.8%, 0%, 27.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer868,280
CSS custom property--colour: #0D3FB8;

Brightness & contrast

Relative luminance0.07101WCAG 2.x, 0 is black and 1 is white
Perceived brightness79 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.68:1
Contrast with white8.68:1WCAG normal text: AAA
Contrast with black2.42:1WCAG normal text: Fail
Greyscale equivalent#3D3D3D
Inverted#F2C047

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0053BCno red cones; affects about 1% of men; ΔE 14.9 from the original
Deuteranopia#0044B6no green cones; the most common form, about 1% of men; ΔE 5.4 from the original
Tritanopia#006076no blue cones; rare, and affects men and women equally; ΔE 69 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text8.68:1WCAG large text: AAA
Contrast with black, large text2.42:1WCAG large text: Fail

Named colours

Slate blue · ΔE 16.6Royal blue · ΔE 17.5Medium slateblue · ΔE 21.6Rebecca purple · ΔE 22.3Navy · ΔE 23.8Midnight blue · ΔE 24.2
Nearest named CSS colourSlate blue (#6A5ACD)ΔE 16.62, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B8860D
Analogous#0D95B8, #300DB8
Triadic#B80D3F, #3FB80D
Split complementary#B8310D, #95B80D
Tetradic#B80D95, #B8860D, #0DB831

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#99B5F8
Lighter +30%#6A92F4
Lighter +20%#3A6FF1
Lighter +10%#104FE8
Darker −10%#0A2F88
Darker −20%#061E59
Darker −30%#030E29
Darker −40%#000000
More saturated +25%#003AC5
Less saturated −25%#26499F

Channel breakdown

R13
G63
B184
Red13 (5.1%)
Green63 (24.7%)
Blue184 (72.2%)
Hue222.46°
Saturation (HSL)86.8%
Lightness38.63%
Dominant channelBlue
Hex per channelR 0D · G 3F · B B8

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Every value on this page was computed from “0d3fb8” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.