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Recognised as Colour

#2D277B

  • #2D277B
  • Blue
  • Dark
  • Nearest: Midnight blue

#2D277B is a blue with RGB values 45, 39, 123 and HSL 244°, 52%, 32%. It is a dark colour, so white text on it reaches 12.4:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#2D277B#2D277B
HEX#2D277B
RGBrgb(45, 39, 123)
RGB (0–1)0.1765, 0.1529, 0.4824
RGB percentages17.6%, 15.3%, 48.2%
HSLhsl(244.3, 51.9%, 31.8%)
HSV / HSBhsv(244.3, 68.3%, 48.2%)
CMYK63.4%, 68.3%, 0%, 51.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,959,227
CSS custom property--colour: #2D277B;

Brightness & contrast

Relative luminance0.03439WCAG 2.x, 0 is black and 1 is white
Perceived brightness56.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.44:1
Contrast with white12.44:1WCAG normal text: AAA
Contrast with black1.69:1WCAG normal text: Fail
Greyscale equivalent#2E2E2E
Inverted#D2D884

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#00377Eno red cones; affects about 1% of men; ΔE 15.2 from the original
Deuteranopia#003179no green cones; the most common form, about 1% of men; ΔE 12.8 from the original
Tritanopia#003D4Dno blue cones; rare, and affects men and women equally; ΔE 51.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text12.44:1WCAG large text: AAA
Contrast with black, large text1.69:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 6.8Dark slateblue · ΔE 10.9Rebecca purple · ΔE 17.5Indigo · ΔE 23.2Slate blue · ΔE 26.8Navy · ΔE 26.8
Nearest named CSS colourMidnight blue (#191970)ΔE 6.83, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#757B27
Analogous#274B7B, #57277B
Triadic#7B2D27, #277B2D
Split complementary#7B5727, #4B7B27
Tetradic#7B274B, #757B27, #277B57

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9792DC
Lighter +30%#726BD0
Lighter +20%#4D44C4
Lighter +10%#3B33A2
Darker −10%#1F1B54
Darker −20%#110E2E
Darker −30%#020207
Darker −40%#000000
More saturated +25%#1C138F
Less saturated −25%#3E3B67

Channel breakdown

R45
G39
B123
Red45 (17.6%)
Green39 (15.3%)
Blue123 (48.2%)
Hue244.29°
Saturation (HSL)51.85%
Lightness31.76%
Dominant channelBlue
Hex per channelR 2D · G 27 · B 7B

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Every value on this page was computed from “2d277b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.