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Colour

#0400A8

  • #0400A8
  • Blue
  • Dark
  • Nearest: Dark blue

#0400A8 is a blue with RGB values 4, 0, 168 and HSL 241°, 100%, 33%. It is a dark colour, so white text on it reaches 13.4:1 contrast (AAA for normal text). The nearest named colour is Dark blue.

Colour values

#0400A8#0400A8
HEX#0400A8
RGBrgb(4, 0, 168)
RGB (0–1)0.0157, 0, 0.6588
RGB percentages1.6%, 0%, 65.9%
HSLhsl(241.4, 100%, 32.9%)
HSV / HSBhsv(241.4, 100%, 65.9%)
CMYK97.6%, 100%, 0%, 34.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer262,312
CSS custom property--colour: #0400A8;

Brightness & contrast

Relative luminance0.02853WCAG 2.x, 0 is black and 1 is white
Perceived brightness56.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.37:1
Contrast with white13.37:1WCAG normal text: AAA
Contrast with black1.57:1WCAG normal text: Fail
Greyscale equivalent#0D0D0D
Inverted#FBFF57

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0038ACno red cones; affects about 1% of men; ΔE 29.8 from the original
Deuteranopia#0025A6no green cones; the most common form, about 1% of men; ΔE 18 from the original
Tritanopia#004461no blue cones; rare, and affects men and women equally; ΔE 86.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text13.37:1WCAG large text: AAA
Contrast with black, large text1.57:1WCAG large text: Fail

Named colours

Dark blue · ΔE 13.4Medium blue · ΔE 16.7Navy · ΔE 18.7Blue violet · ΔE 26Indigo · ΔE 26.2Dark violet · ΔE 28.5
Nearest named CSS colourDark blue (#00008B)ΔE 13.41, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A4A800
Analogous#0050A8, #5800A8
Triadic#A80400, #00A804
Split complementary#A85800, #50A800
Tetradic#A80050, #A4A800, #00A858

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#7875FF
Lighter +30%#4642FF
Lighter +20%#150FFF
Lighter +10%#0500DB
Darker −10%#030075
Darker −20%#020042
Darker −30%#00000F
Darker −40%#000000
More saturated +25%#0400A8
Less saturated −25%#181593

Channel breakdown

R4
G0
B168
Red4 (1.6%)
Green0 (0%)
Blue168 (65.9%)
Hue241.43°
Saturation (HSL)100%
Lightness32.94%
Dominant channelBlue
Hex per channelR 04 · G 00 · B A8

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Every value on this page was computed from “0400a8” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.