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Recognised as Colour

#2B3287

  • #2B3287
  • Blue
  • Dark
  • Nearest: Dark slateblue

#2B3287 is a blue with RGB values 43, 50, 135 and HSL 235°, 52%, 35%. It is a dark colour, so white text on it reaches 11:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#2B3287#2B3287
HEX#2B3287
RGBrgb(43, 50, 135)
RGB (0–1)0.1686, 0.1961, 0.5294
RGB percentages16.9%, 19.6%, 52.9%
HSLhsl(235.4, 51.7%, 34.9%)
HSV / HSBhsv(235.4, 68.1%, 52.9%)
CMYK68.1%, 63%, 0%, 47.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,830,983
CSS custom property--colour: #2B3287;

Brightness & contrast

Relative luminance0.04544WCAG 2.x, 0 is black and 1 is white
Perceived brightness64 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11:1
Contrast with white11:1WCAG normal text: AAA
Contrast with black1.91:1WCAG normal text: Fail
Greyscale equivalent#373737
Inverted#D4CD78

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#00408Ano red cones; affects about 1% of men; ΔE 13.2 from the original
Deuteranopia#003885no green cones; the most common form, about 1% of men; ΔE 9.2 from the original
Tritanopia#004757no blue cones; rare, and affects men and women equally; ΔE 51.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text11:1WCAG large text: AAA
Contrast with black, large text1.91:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 8.4Midnight blue · ΔE 11.1Rebecca purple · ΔE 18.4Slate blue · ΔE 24.1Indigo · ΔE 26.5Royal blue · ΔE 28
Nearest named CSS colourDark slateblue (#483D8B)ΔE 8.42, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#87802B
Analogous#2B6087, #522B87
Triadic#872B32, #32872B
Split complementary#87522B, #60872B
Tetradic#872B60, #87802B, #2B8752

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9EA3E0
Lighter +30%#777ED4
Lighter +20%#515AC7
Lighter +10%#3740AE
Darker −10%#1F2460
Darker −20%#12153A
Darker −30%#060713
Darker −40%#000000
More saturated +25%#151F9D
Less saturated −25%#414571

Channel breakdown

R43
G50
B135
Red43 (16.9%)
Green50 (19.6%)
Blue135 (52.9%)
Hue235.43°
Saturation (HSL)51.69%
Lightness34.9%
Dominant channelBlue
Hex per channelR 2B · G 32 · B 87

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Every value on this page was computed from “2b3287” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.