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Colour

#263B63

  • #263B63
  • Blue
  • Dark
  • Nearest: Dark slateblue

#263B63 is a blue with RGB values 38, 59, 99 and HSL 219°, 45%, 27%. It is a dark colour, so white text on it reaches 11.1:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#263B63#263B63
HEX#263B63
RGBrgb(38, 59, 99)
RGB (0–1)0.149, 0.2314, 0.3882
RGB percentages14.9%, 23.1%, 38.8%
HSLhsl(219.3, 44.5%, 26.9%)
HSV / HSBhsv(219.3, 61.6%, 38.8%)
CMYK61.6%, 40.4%, 0%, 61.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,505,571
CSS custom property--colour: #263B63;

Brightness & contrast

Relative luminance0.04441WCAG 2.x, 0 is black and 1 is white
Perceived brightness59.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.12:1
Contrast with white11.12:1WCAG normal text: AAA
Contrast with black1.89:1WCAG normal text: Fail
Greyscale equivalent#393939
Inverted#D9C49C

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#2A3F65no red cones; affects about 1% of men; ΔE 2.3 from the original
Deuteranopia#223962no green cones; the most common form, about 1% of men; ΔE 1.2 from the original
Tritanopia#00444Ano blue cones; rare, and affects men and women equally; ΔE 27.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text11.12:1WCAG large text: AAA
Contrast with black, large text1.89:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 26.7Dark slate grey · ΔE 28.9Steel blue · ΔE 29.6Slate grey · ΔE 32.7Dim grey · ΔE 33Light slate grey · ΔE 35.1
Nearest named CSS colourDark slateblue (#483D8B)ΔE 26.74, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#634E26
Analogous#265963, #302663
Triadic#63263B, #3B6326
Split complementary#633026, #596326
Tetradic#632659, #634E26, #266330

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#859FD0
Lighter +30%#6082C2
Lighter +20%#4267AD
Lighter +10%#345188
Darker −10%#18253E
Darker −20%#0A0F19
Darker −30%#000000
Darker −40%#000000
More saturated +25%#153674
Less saturated −25%#374052

Channel breakdown

R38
G59
B99
Red38 (14.9%)
Green59 (23.1%)
Blue99 (38.8%)
Hue219.34°
Saturation (HSL)44.53%
Lightness26.86%
Dominant channelBlue
Hex per channelR 26 · G 3B · B 63

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Every value on this page was computed from “263b63” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.