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Colour

#00398E

  • #00398E
  • Blue
  • Dark
  • Nearest: Dark slateblue

#00398E is a blue with RGB values 0, 57, 142 and HSL 216°, 100%, 28%. It is a dark colour, so white text on it reaches 10.6:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#00398E#00398E
HEX#00398E
RGBrgb(0, 57, 142)
RGB (0–1)0, 0.2235, 0.5569
RGB percentages0%, 22.4%, 55.7%
HSLhsl(215.9, 100%, 27.8%)
HSV / HSBhsv(215.9, 100%, 55.7%)
CMYK100%, 59.9%, 0%, 44.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer14,734
CSS custom property--colour: #00398E;

Brightness & contrast

Relative luminance0.04879WCAG 2.x, 0 is black and 1 is white
Perceived brightness64.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.63:1
Contrast with white10.63:1WCAG normal text: AAA
Contrast with black1.98:1WCAG normal text: Fail
Greyscale equivalent#333333
Inverted#FFC671

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#004591no red cones; affects about 1% of men; ΔE 9.1 from the original
Deuteranopia#00398Cno green cones; the most common form, about 1% of men; ΔE 1.3 from the original
Tritanopia#004F5Dno blue cones; rare, and affects men and women equally; ΔE 51.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text10.63:1WCAG large text: AAA
Contrast with black, large text1.98:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 11.8Midnight blue · ΔE 15.8Rebecca purple · ΔE 24Slate blue · ΔE 25.6Royal blue · ΔE 26.3Indigo · ΔE 32.2
Nearest named CSS colourDark slateblue (#483D8B)ΔE 11.83, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8E5500
Analogous#00808E, #0E008E
Triadic#8E0039, #398E00
Split complementary#8E0E00, #808E00
Tetradic#8E0080, #8E5500, #008E0E

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#5B9DFF
Lighter +30%#287EFF
Lighter +20%#0062F4
Lighter +10%#004DC1
Darker −10%#00255B
Darker −20%#001028
Darker −30%#000000
Darker −40%#000000
More saturated +25%#00398E
Less saturated −25%#123D7C

Channel breakdown

R0
G57
B142
Red0 (0%)
Green57 (22.4%)
Blue142 (55.7%)
Hue215.92°
Saturation (HSL)100%
Lightness27.84%
Dominant channelBlue
Hex per channelR 00 · G 39 · B 8E

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Every value on this page was computed from “00398e” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.