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Colour

#00377F

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

#00377F is a blue with RGB values 0, 55, 127 and HSL 214°, 100%, 25%. It is a dark colour, so white text on it reaches 11.3:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#00377F#00377F
HEX#00377F
RGBrgb(0, 55, 127)
RGB (0–1)0, 0.2157, 0.498
RGB percentages0%, 21.6%, 49.8%
HSLhsl(214, 100%, 24.9%)
HSV / HSBhsv(214, 100%, 49.8%)
CMYK100%, 56.7%, 0%, 50.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer14,207
CSS custom property--colour: #00377F;

Brightness & contrast

Relative luminance0.04265WCAG 2.x, 0 is black and 1 is white
Perceived brightness60.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.33:1
Contrast with white11.33:1WCAG normal text: AAA
Contrast with black1.85:1WCAG normal text: Fail
Greyscale equivalent#313131
Inverted#FFC880

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#004082no red cones; affects about 1% of men; ΔE 6.6 from the original
Deuteranopia#00357Eno green cones; the most common form, about 1% of men; ΔE 1.3 from the original
Tritanopia#004955no blue cones; rare, and affects men and women equally; ΔE 44.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text11.33:1WCAG large text: AAA
Contrast with black, large text1.85:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 13Midnight blue · ΔE 19.3Rebecca purple · ΔE 29.1Slate blue · ΔE 32.2Royal blue · ΔE 32.9Steel blue · ΔE 36.2
Nearest named CSS colourDark slateblue (#483D8B)ΔE 12.98, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#7F4800
Analogous#00777F, #08007F
Triadic#7F0037, #377F00
Split complementary#7F0800, #777F00
Tetradic#7F0077, #7F4800, #007F08

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#4C9AFF
Lighter +30%#197DFF
Lighter +20%#0063E5
Lighter +10%#004DB2
Darker −10%#00214C
Darker −20%#000B19
Darker −30%#000000
Darker −40%#000000
More saturated +25%#00377F
Less saturated −25%#10396F

Channel breakdown

R0
G55
B127
Red0 (0%)
Green55 (21.6%)
Blue127 (49.8%)
Hue214.02°
Saturation (HSL)100%
Lightness24.9%
Dominant channelBlue
Hex per channelR 00 · G 37 · B 7F

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