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Colour

#2F377D

  • #2F377D
  • Blue
  • Dark
  • Nearest: Dark slateblue

#2F377D is a blue with RGB values 47, 55, 125 and HSL 234°, 45%, 34%. It is a dark colour, so white text on it reaches 10.7:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#2F377D#2F377D
HEX#2F377D
RGBrgb(47, 55, 125)
RGB (0–1)0.1843, 0.2157, 0.4902
RGB percentages18.4%, 21.6%, 49%
HSLhsl(233.8, 45.3%, 33.7%)
HSV / HSBhsv(233.8, 62.4%, 49%)
CMYK62.4%, 56%, 0%, 51%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,094,397
CSS custom property--colour: #2F377D;

Brightness & contrast

Relative luminance0.04817WCAG 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 10.7:1
Contrast with white10.7:1WCAG normal text: AAA
Contrast with black1.96:1WCAG normal text: Fail
Greyscale equivalent#3A3A3A
Inverted#D0C882

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#08417Fno red cones; affects about 1% of men; ΔE 11.4 from the original
Deuteranopia#003B7Cno green cones; the most common form, about 1% of men; ΔE 8.9 from the original
Tritanopia#004754no blue cones; rare, and affects men and women equally; ΔE 43.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text10.7:1WCAG large text: AAA
Contrast with black, large text1.96:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 7.9Midnight blue · ΔE 18Rebecca purple · ΔE 24.9Slate blue · ΔE 30.2Royal blue · ΔE 33.2Medium purple · ΔE 34.7
Nearest named CSS colourDark slateblue (#483D8B)ΔE 7.89, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#7D752F
Analogous#2F5E7D, #4E2F7D
Triadic#7D2F37, #377D2F
Split complementary#7D4E2F, #5E7D2F
Tetradic#7D2F5E, #7D752F, #2F7D4E

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9EA4DA
Lighter +30%#7981CC
Lighter +20%#535EBF
Lighter +10%#3D47A2
Darker −10%#212758
Darker −20%#131633
Darker −30%#05060E
Darker −40%#000000
More saturated +25%#1A2693
Less saturated −25%#454868

Channel breakdown

R47
G55
B125
Red47 (18.4%)
Green55 (21.6%)
Blue125 (49%)
Hue233.85°
Saturation (HSL)45.35%
Lightness33.73%
Dominant channelBlue
Hex per channelR 2F · G 37 · B 7D

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Every value on this page was computed from “2f377d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.