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Recognised as Colour

#03377D

  • #03377D
  • Blue
  • Dark
  • Nearest: Dark slateblue

#03377D is a blue with RGB values 3, 55, 125 and HSL 214°, 95%, 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

#03377D#03377D
HEX#03377D
RGBrgb(3, 55, 125)
RGB (0–1)0.0118, 0.2157, 0.4902
RGB percentages1.2%, 21.6%, 49%
HSLhsl(214.4, 95.3%, 25.1%)
HSV / HSBhsv(214.4, 97.6%, 49%)
CMYK97.6%, 56%, 0%, 51%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer210,813
CSS custom property--colour: #03377D;

Brightness & contrast

Relative luminance0.04232WCAG 2.x, 0 is black and 1 is white
Perceived brightness59.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.37:1
Contrast with white11.37:1WCAG normal text: AAA
Contrast with black1.85:1WCAG normal text: Fail
Greyscale equivalent#313131
Inverted#FCC882

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#00407Fno red cones; affects about 1% of men; ΔE 7.2 from the original
Deuteranopia#00357Cno green cones; the most common form, about 1% of men; ΔE 1.2 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 text11.37:1WCAG large text: AAA
Contrast with black, large text1.85:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 13.4Midnight blue · ΔE 20.1Rebecca purple · ΔE 29.9Slate blue · ΔE 33.1Royal blue · ΔE 33.8Steel blue · ΔE 35.6
Nearest named CSS colourDark slateblue (#483D8B)ΔE 13.42, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#7D4903
Analogous#03747D, #0C037D
Triadic#7D0337, #377D03
Split complementary#7D0C03, #747D03
Tetradic#7D0374, #7D4903, #037D0C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#5199FB
Lighter +30%#1F7CFA
Lighter +20%#0563E1
Lighter +10%#044DAF
Darker −10%#02214B
Darker −20%#010B19
Darker −30%#000000
Darker −40%#000000
More saturated +25%#003780
Less saturated −25%#13396D

Channel breakdown

R3
G55
B125
Red3 (1.2%)
Green55 (21.6%)
Blue125 (49%)
Hue214.43°
Saturation (HSL)95.31%
Lightness25.1%
Dominant channelBlue
Hex per channelR 03 · G 37 · B 7D

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Every value on this page was computed from “03377d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.