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Recognised as Colour

#281D69

  • #281D69
  • Blue
  • Dark
  • Nearest: Midnight blue

#281D69 is a blue with RGB values 40, 29, 105 and HSL 249°, 57%, 26%. It is a dark colour, so white text on it reaches 14.3:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#281D69#281D69
HEX#281D69
RGBrgb(40, 29, 105)
RGB (0–1)0.1569, 0.1137, 0.4118
RGB percentages15.7%, 11.4%, 41.2%
HSLhsl(248.7, 56.7%, 26.3%)
HSV / HSBhsv(248.7, 72.4%, 41.2%)
CMYK61.9%, 72.4%, 0%, 58.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,628,969
CSS custom property--colour: #281D69;

Brightness & contrast

Relative luminance0.0235WCAG 2.x, 0 is black and 1 is white
Perceived brightness47.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 14.29:1
Contrast with white14.29:1WCAG normal text: AAA
Contrast with black1.47:1WCAG normal text: Fail
Greyscale equivalent#252525
Inverted#D7E296

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#002D6Bno red cones; affects about 1% of men; ΔE 15.7 from the original
Deuteranopia#002868no green cones; the most common form, about 1% of men; ΔE 13 from the original
Tritanopia#013140no blue cones; rare, and affects men and women equally; ΔE 47.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text14.29:1WCAG large text: AAA
Contrast with black, large text1.47:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 7.6Dark slateblue · ΔE 13.9Rebecca purple · ΔE 21.6Indigo · ΔE 25.5Navy · ΔE 29.2Slate blue · ΔE 32.7
Nearest named CSS colourMidnight blue (#191970)ΔE 7.61, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#5E691D
Analogous#1D3869, #4E1D69
Triadic#69281D, #1D6928
Split complementary#694E1D, #38691D
Tetradic#691D38, #5E691D, #1D694E

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8678DA
Lighter +30%#6350CF
Lighter +20%#4633B9
Lighter +10%#372891
Darker −10%#191241
Darker −20%#0A0719
Darker −30%#000000
Darker −40%#000000
More saturated +25%#1C0C7A
Less saturated −25%#342E58

Channel breakdown

R40
G29
B105
Red40 (15.7%)
Green29 (11.4%)
Blue105 (41.2%)
Hue248.68°
Saturation (HSL)56.72%
Lightness26.27%
Dominant channelBlue
Hex per channelR 28 · G 1D · B 69

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Every value on this page was computed from “281d69” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.