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Colour

#003D9D

  • #003D9D
  • Blue
  • Dark
  • Nearest: Dark slateblue

#003D9D is a blue with RGB values 0, 61, 157 and HSL 217°, 100%, 31%. It is a dark colour, so white text on it reaches 9.7:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#003D9D#003D9D
HEX#003D9D
RGBrgb(0, 61, 157)
RGB (0–1)0, 0.2392, 0.6157
RGB percentages0%, 23.9%, 61.6%
HSLhsl(216.7, 100%, 30.8%)
HSV / HSBhsv(216.7, 100%, 61.6%)
CMYK100%, 61.1%, 0%, 38.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer15,773
CSS custom property--colour: #003D9D;

Brightness & contrast

Relative luminance0.05772WCAG 2.x, 0 is black and 1 is white
Perceived brightness70.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.75:1
Contrast with white9.75:1WCAG normal text: AAA
Contrast with black2.15:1WCAG normal text: Fail
Greyscale equivalent#373737
Inverted#FFC262

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#004BA0no red cones; affects about 1% of men; ΔE 10.7 from the original
Deuteranopia#003D9Bno green cones; the most common form, about 1% of men; ΔE 1.3 from the original
Tritanopia#005667no blue cones; rare, and affects men and women equally; ΔE 56.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.75:1WCAG large text: AAA
Contrast with black, large text2.15:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 14.8Midnight blue · ΔE 16.8Slate blue · ΔE 20.7Royal blue · ΔE 21.1Rebecca purple · ΔE 21.8Indigo · ΔE 29.5
Nearest named CSS colourDark slateblue (#483D8B)ΔE 14.76, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#9D6000
Analogous#008B9D, #12009D
Triadic#9D003D, #3D9D00
Split complementary#9D1200, #8B9D00
Tetradic#9D008B, #9D6000, #009D12

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#6AA4FF
Lighter +30%#3785FF
Lighter +20%#0466FF
Lighter +10%#0051D0
Darker −10%#00296A
Darker −20%#001537
Darker −30%#000204
Darker −40%#000000
More saturated +25%#003D9D
Less saturated −25%#144189

Channel breakdown

R0
G61
B157
Red0 (0%)
Green61 (23.9%)
Blue157 (61.6%)
Hue216.69°
Saturation (HSL)100%
Lightness30.78%
Dominant channelBlue
Hex per channelR 00 · G 3D · B 9D

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Every value on this page was computed from “003d9d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.