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Recognised as Colour

#003881

  • #003881
  • Blue
  • Dark
  • Nearest: Dark slateblue

#003881 is a blue with RGB values 0, 56, 129 and HSL 214°, 100%, 25%. It is a dark colour, so white text on it reaches 11.2:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#003881#003881
HEX#003881
RGBrgb(0, 56, 129)
RGB (0–1)0, 0.2196, 0.5059
RGB percentages0%, 22%, 50.6%
HSLhsl(214, 100%, 25.3%)
HSV / HSBhsv(214, 100%, 50.6%)
CMYK100%, 56.6%, 0%, 49.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer14,465
CSS custom property--colour: #003881;

Brightness & contrast

Relative luminance0.04413WCAG 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 11.15:1
Contrast with white11.15:1WCAG normal text: AAA
Contrast with black1.88:1WCAG normal text: Fail
Greyscale equivalent#313131
Inverted#FFC77E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#004184no red cones; affects about 1% of men; ΔE 6.6 from the original
Deuteranopia#003680no green cones; the most common form, about 1% of men; ΔE 1.3 from the original
Tritanopia#004A56no blue cones; rare, and affects men and women equally; ΔE 44.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text11.15:1WCAG large text: AAA
Contrast with black, large text1.88:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 12.8Midnight blue · ΔE 19.3Rebecca purple · ΔE 28.8Slate blue · ΔE 31.6Royal blue · ΔE 32.2Steel blue · ΔE 36.1
Nearest named CSS colourDark slateblue (#483D8B)ΔE 12.75, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#814900
Analogous#007881, #090081
Triadic#810038, #388100
Split complementary#810900, #788100
Tetradic#810078, #814900, #008109

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#4E9BFF
Lighter +30%#1B7EFF
Lighter +20%#0064E7
Lighter +10%#004EB4
Darker −10%#00224E
Darker −20%#000C1B
Darker −30%#000000
Darker −40%#000000
More saturated +25%#003881
Less saturated −25%#103A71

Channel breakdown

R0
G56
B129
Red0 (0%)
Green56 (22%)
Blue129 (50.6%)
Hue213.95°
Saturation (HSL)100%
Lightness25.29%
Dominant channelBlue
Hex per channelR 00 · G 38 · B 81

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Every value on this page was computed from “hex 003881” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.