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Colour

#00377D

  • #00377D
  • Blue
  • Dark
  • Nearest: Dark slateblue

#00377D is a blue with RGB values 0, 55, 125 and HSL 214°, 100%, 25%. It is a dark colour, so white text on it reaches 11.4:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#00377D#00377D
HEX#00377D
RGBrgb(0, 55, 125)
RGB (0–1)0, 0.2157, 0.4902
RGB percentages0%, 21.6%, 49%
HSLhsl(213.6, 100%, 24.5%)
HSV / HSBhsv(213.6, 100%, 49%)
CMYK100%, 56%, 0%, 51%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer14,205
CSS custom property--colour: #00377D;

Brightness & contrast

Relative luminance0.04213WCAG 2.x, 0 is black and 1 is white
Perceived brightness59.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.4:1
Contrast with white11.4:1WCAG normal text: AAA
Contrast with black1.84:1WCAG normal text: Fail
Greyscale equivalent#303030
Inverted#FFC882

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#003F7Fno red cones; affects about 1% of men; ΔE 6.2 from the original
Deuteranopia#00357Cno green cones; the most common form, about 1% of men; ΔE 1.3 from the original
Tritanopia#004954no blue cones; rare, and affects men and women equally; ΔE 43.6 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text11.4:1WCAG large text: AAA
Contrast with black, large text1.84:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 13.6Midnight blue · ΔE 20.3Rebecca purple · ΔE 30.1Slate blue · ΔE 33.3Royal blue · ΔE 33.9Steel blue · ΔE 35.5
Nearest named CSS colourDark slateblue (#483D8B)ΔE 13.63, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#7D4600
Analogous#00757D, #08007D
Triadic#7D0037, #377D00
Split complementary#7D0800, #757D00
Tetradic#7D0075, #7D4600, #007D08

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#4A9AFF
Lighter +30%#177DFF
Lighter +20%#0064E3
Lighter +10%#004DB0
Darker −10%#00214A
Darker −20%#000A17
Darker −30%#000000
Darker −40%#000000
More saturated +25%#00377D
Less saturated −25%#10396D

Channel breakdown

R0
G55
B125
Red0 (0%)
Green55 (21.6%)
Blue125 (49%)
Hue213.6°
Saturation (HSL)100%
Lightness24.51%
Dominant channelBlue
Hex per channelR 00 · G 37 · B 7D

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Every value on this page was computed from “00377d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.