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Recognised as Colour

#2D1183

  • #2D1183
  • Blue
  • Dark
  • Nearest: Indigo

#2D1183 is a blue with RGB values 45, 17, 131 and HSL 255°, 77%, 29%. It is a dark colour, so white text on it reaches 13.8:1 contrast (AAA for normal text). The nearest named colour is Indigo.

Colour values

#2D1183#2D1183
HEX#2D1183
RGBrgb(45, 17, 131)
RGB (0–1)0.1765, 0.0667, 0.5137
RGB percentages17.6%, 6.7%, 51.4%
HSLhsl(254.7, 77%, 29%)
HSV / HSBhsv(254.7, 87%, 51.4%)
CMYK65.6%, 87%, 0%, 48.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,953,603
CSS custom property--colour: #2D1183;

Brightness & contrast

Relative luminance0.02597WCAG 2.x, 0 is black and 1 is white
Perceived brightness52.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.82:1
Contrast with white13.82:1WCAG normal text: AAA
Contrast with black1.52:1WCAG normal text: Fail
Greyscale equivalent#1F1F1F
Inverted#D2EE7C

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#003086no red cones; affects about 1% of men; ΔE 22.1 from the original
Deuteranopia#002981no green cones; the most common form, about 1% of men; ΔE 18.8 from the original
Tritanopia#00364Cno blue cones; rare, and affects men and women equally; ΔE 64.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text13.82:1WCAG large text: AAA
Contrast with black, large text1.52:1WCAG large text: Fail

Named colours

Indigo · ΔE 9.1Navy · ΔE 9.6Dark blue · ΔE 13.4Midnight blue · ΔE 14.8Rebecca purple · ΔE 17.9Dark slateblue · ΔE 26.7
Nearest named CSS colourIndigo (#4B0082)ΔE 9.14, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#678311
Analogous#112E83, #661183
Triadic#832D11, #11832D
Split complementary#836611, #2E8311
Tetradic#83112E, #678311, #118366

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9173ED
Lighter +30%#6E46E7
Lighter +20%#4C1DDD
Lighter +10%#3D17B0
Darker −10%#1D0B56
Darker −20%#0E0529
Darker −30%#000000
Darker −40%#000000
More saturated +25%#240094
Less saturated −25%#362371

Channel breakdown

R45
G17
B131
Red45 (17.6%)
Green17 (6.7%)
Blue131 (51.4%)
Hue254.74°
Saturation (HSL)77.03%
Lightness29.02%
Dominant channelBlue
Hex per channelR 2D · G 11 · B 83

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Every value on this page was computed from “2d1183” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.