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Recognised as Colour

#23256D

  • #23256D
  • Blue
  • Dark
  • Nearest: Midnight blue

#23256D is a blue with RGB values 35, 37, 109 and HSL 238°, 51%, 28%. It is a dark colour, so white text on it reaches 13.5:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#23256D#23256D
HEX#23256D
RGBrgb(35, 37, 109)
RGB (0–1)0.1373, 0.1451, 0.4275
RGB percentages13.7%, 14.5%, 42.7%
HSLhsl(238.4, 51.4%, 28.2%)
HSV / HSBhsv(238.4, 67.9%, 42.7%)
CMYK67.9%, 66.1%, 0%, 57.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,303,341
CSS custom property--colour: #23256D;

Brightness & contrast

Relative luminance0.02785WCAG 2.x, 0 is black and 1 is white
Perceived brightness50.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.49:1
Contrast with white13.49:1WCAG normal text: AAA
Contrast with black1.56:1WCAG normal text: Fail
Greyscale equivalent#2A2A2A
Inverted#DCDA92

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#00326Fno red cones; affects about 1% of men; ΔE 12.9 from the original
Deuteranopia#002B6Cno green cones; the most common form, about 1% of men; ΔE 8.6 from the original
Tritanopia#003745no blue cones; rare, and affects men and women equally; ΔE 45.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text13.49:1WCAG large text: AAA
Contrast with black, large text1.56:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 11.2Dark slateblue · ΔE 11.8Rebecca purple · ΔE 23.9Indigo · ΔE 29.9Slate blue · ΔE 32.8Navy · ΔE 33.1
Nearest named CSS colourMidnight blue (#191970)ΔE 11.17, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#6D6B23
Analogous#234A6D, #46236D
Triadic#6D2325, #256D23
Split complementary#6D4623, #4A6D23
Tetradic#6D234A, #6D6B23, #236D46

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8487D8
Lighter +30%#5E61CB
Lighter +20%#3C3FBA
Lighter +10%#2F3294
Darker −10%#171846
Darker −20%#0A0B20
Darker −30%#000000
Darker −40%#000000
More saturated +25%#11147F
Less saturated −25%#35365B

Channel breakdown

R35
G37
B109
Red35 (13.7%)
Green37 (14.5%)
Blue109 (42.7%)
Hue238.38°
Saturation (HSL)51.39%
Lightness28.24%
Dominant channelBlue
Hex per channelR 23 · G 25 · B 6D

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Every value on this page was computed from “23256d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.