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Colour

#23487F

  • #23487F
  • Blue
  • Dark
  • Nearest: Dark slateblue

#23487F is a blue with RGB values 35, 72, 127 and HSL 216°, 57%, 32%. It is a dark colour, so white text on it reaches 9.1:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#23487F#23487F
HEX#23487F
RGBrgb(35, 72, 127)
RGB (0–1)0.1373, 0.2824, 0.498
RGB percentages13.7%, 28.2%, 49.8%
HSLhsl(215.9, 56.8%, 31.8%)
HSV / HSBhsv(215.9, 72.4%, 49.8%)
CMYK72.4%, 43.3%, 0%, 50.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,312,319
CSS custom property--colour: #23487F;

Brightness & contrast

Relative luminance0.06524WCAG 2.x, 0 is black and 1 is white
Perceived brightness72.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.11:1
Contrast with white9.11:1WCAG normal text: AAA
Contrast with black2.3:1WCAG normal text: Fail
Greyscale equivalent#444444
Inverted#DCB780

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#2E4D81no red cones; affects about 1% of men; ΔE 3.2 from the original
Deuteranopia#1F447Eno green cones; the most common form, about 1% of men; ΔE 2.8 from the original
Tritanopia#00555Dno blue cones; rare, and affects men and women equally; ΔE 35 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text9.11:1WCAG large text: AAA
Contrast with black, large text2.3:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 20.6Steel blue · ΔE 24.4Midnight blue · ΔE 32.5Slate grey · ΔE 34.1Cornflower blue · ΔE 34.5Light slate grey · ΔE 35.9
Nearest named CSS colourDark slateblue (#483D8B)ΔE 20.62, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#7F5A23
Analogous#23767F, #2C237F
Triadic#7F2348, #487F23
Split complementary#7F2C23, #767F23
Tetradic#7F2376, #7F5A23, #237F2C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8EAFE0
Lighter +30%#6693D5
Lighter +20%#3E76CA
Lighter +10%#2E5FA7
Darker −10%#183157
Darker −20%#0D1B2F
Darker −30%#020407
Darker −40%#000000
More saturated +25%#0F4493
Less saturated −25%#374C6B

Channel breakdown

R35
G72
B127
Red35 (13.7%)
Green72 (28.2%)
Blue127 (49.8%)
Hue215.87°
Saturation (HSL)56.79%
Lightness31.76%
Dominant channelBlue
Hex per channelR 23 · G 48 · B 7F

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Every value on this page was computed from “23487f” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.