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Recognised as Colour

#040331

  • #040331
  • Blue
  • Dark
  • Nearest: Black

#040331 is a blue with RGB values 4, 3, 49 and HSL 241°, 88%, 10%. It is a dark colour, so white text on it reaches 19.8:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#040331#040331
HEX#040331
RGBrgb(4, 3, 49)
RGB (0–1)0.0157, 0.0118, 0.1922
RGB percentages1.6%, 1.2%, 19.2%
HSLhsl(241.3, 88.5%, 10.2%)
HSV / HSBhsv(241.3, 93.9%, 19.2%)
CMYK91.8%, 93.9%, 0%, 80.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer262,961
CSS custom property--colour: #040331;

Brightness & contrast

Relative luminance0.00313WCAG 2.x, 0 is black and 1 is white
Perceived brightness16.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 19.76:1
Contrast with white19.76:1WCAG normal text: AAA
Contrast with black1.06:1WCAG normal text: Fail
Greyscale equivalent#070707
Inverted#FBFCCE

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#000D32no red cones; affects about 1% of men; ΔE 5.4 from the original
Deuteranopia#000830no green cones; the most common form, about 1% of men; ΔE 4.1 from the original
Tritanopia#001019no blue cones; rare, and affects men and women equally; ΔE 26 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text19.76:1WCAG large text: AAA
Contrast with black, large text1.06:1WCAG large text: Fail

Named colours

Black · ΔE 30.9Midnight blue · ΔE 31.2Dark slateblue · ΔE 33.8Dark slate grey · ΔE 45.1Rebecca purple · ΔE 46.2Indigo · ΔE 49
Nearest named CSS colourBlack (#000000)ΔE 30.94, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#303103
Analogous#031931, #1B0331
Triadic#310403, #033104
Split complementary#311B03, #193103
Tetradic#310319, #303103, #03311B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#1510F0
Lighter +30%#100CC1
Lighter +20%#0C0991
Lighter +10%#080661
Darker −10%#000001
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#010034
Less saturated −25%#0A092B

Channel breakdown

R4
G3
B49
Red4 (1.6%)
Green3 (1.2%)
Blue49 (19.2%)
Hue241.3°
Saturation (HSL)88.46%
Lightness10.2%
Dominant channelBlue
Hex per channelR 04 · G 03 · B 31

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Every value on this page was computed from “hex 040331” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.