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Recognised as Colour

#0A3DBD

  • #0A3DBD
  • Blue
  • Dark
  • Nearest: Slate blue

#0A3DBD is a blue with RGB values 10, 61, 189 and HSL 223°, 90%, 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

#0A3DBD#0A3DBD
HEX#0A3DBD
RGBrgb(10, 61, 189)
RGB (0–1)0.0392, 0.2392, 0.7412
RGB percentages3.9%, 23.9%, 74.1%
HSLhsl(222.9, 89.9%, 39%)
HSV / HSBhsv(222.9, 94.7%, 74.1%)
CMYK94.7%, 67.7%, 0%, 25.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer671,165
CSS custom property--colour: #0A3DBD;

Brightness & contrast

Relative luminance0.07076WCAG 2.x, 0 is black and 1 is white
Perceived brightness79.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.69:1
Contrast with white8.69:1WCAG normal text: AAA
Contrast with black2.42:1WCAG normal text: Fail
Greyscale equivalent#3B3B3B
Inverted#F5C242

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0053C1no red cones; affects about 1% of men; ΔE 16.3 from the original
Deuteranopia#0043BBno green cones; the most common form, about 1% of men; ΔE 6 from the original
Tritanopia#006178no blue cones; rare, and affects men and women equally; ΔE 72.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text8.69:1WCAG large text: AAA
Contrast with black, large text2.42:1WCAG large text: Fail

Named colours

Slate blue · ΔE 18.4Royal blue · ΔE 19.7Medium slateblue · ΔE 21.3Dark blue · ΔE 22.1Navy · ΔE 22.6Rebecca purple · ΔE 24.1
Nearest named CSS colourSlate blue (#6A5ACD)ΔE 18.44, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BD8A0A
Analogous#0A96BD, #310ABD
Triadic#BD0A3D, #3DBD0A
Split complementary#BD310A, #96BD0A
Tetradic#BD0A96, #BD8A0A, #0ABD31

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#99B5FA
Lighter +30%#6991F7
Lighter +20%#396EF4
Lighter +10%#0D4DED
Darker −10%#072D8D
Darker −20%#051E5C
Darker −30%#020E2C
Darker −40%#000000
More saturated +25%#0039C7
Less saturated −25%#2348A4

Channel breakdown

R10
G61
B189
Red10 (3.9%)
Green61 (23.9%)
Blue189 (74.1%)
Hue222.91°
Saturation (HSL)89.95%
Lightness39.02%
Dominant channelBlue
Hex per channelR 0A · G 3D · B BD

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Every value on this page was computed from “0a3dbd” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.