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Recognised as Colour

#031768

  • #031768
  • Blue
  • Dark
  • Nearest: Midnight blue

#031768 is a blue with RGB values 3, 23, 104 and HSL 228°, 94%, 21%. It is a dark colour, so white text on it reaches 15.8:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#031768#031768
HEX#031768
RGBrgb(3, 23, 104)
RGB (0–1)0.0118, 0.0902, 0.4078
RGB percentages1.2%, 9%, 40.8%
HSLhsl(228.1, 94.4%, 21%)
HSV / HSBhsv(228.1, 97.1%, 40.8%)
CMYK97.1%, 77.9%, 0%, 59.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer202,600
CSS custom property--colour: #031768;

Brightness & contrast

Relative luminance0.01632WCAG 2.x, 0 is black and 1 is white
Perceived brightness39.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 15.83:1
Contrast with white15.83:1WCAG normal text: AAA
Contrast with black1.33:1WCAG normal text: Fail
Greyscale equivalent#191919
Inverted#FCE897

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#00276Ano red cones; affects about 1% of men; ΔE 13.2 from the original
Deuteranopia#001D67no green cones; the most common form, about 1% of men; ΔE 5.7 from the original
Tritanopia#002F3Eno blue cones; rare, and affects men and women equally; ΔE 50.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text15.83:1WCAG large text: AAA
Contrast with black, large text1.33:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 4.3Dark slateblue · ΔE 18.7Rebecca purple · ΔE 24.3Indigo · ΔE 24.8Navy · ΔE 25.1Dark blue · ΔE 30
Nearest named CSS colourMidnight blue (#191970)ΔE 4.29, a close match
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#685403
Analogous#034A68, #210368
Triadic#680317, #176803
Split complementary#682103, #4A6803
Tetradic#68034A, #685403, #036821

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#3E63F9
Lighter +30%#0C3BF8
Lighter +20%#062DCB
Lighter +10%#04229A
Darker −10%#020C36
Darker −20%#000105
Darker −30%#000000
Darker −40%#000000
More saturated +25%#00156B
Less saturated −25%#101F5B

Channel breakdown

R3
G23
B104
Red3 (1.2%)
Green23 (9%)
Blue104 (40.8%)
Hue228.12°
Saturation (HSL)94.39%
Lightness20.98%
Dominant channelBlue
Hex per channelR 03 · G 17 · B 68

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Every value on this page was computed from “hex 031768” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.