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Recognised as Colour

#23375B

  • #23375B
  • Blue
  • Dark
  • Nearest: Dark slate grey

#23375B is a blue with RGB values 35, 55, 91 and HSL 219°, 44%, 25%. It is a dark colour, so white text on it reaches 11.9:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#23375B#23375B
HEX#23375B
RGBrgb(35, 55, 91)
RGB (0–1)0.1373, 0.2157, 0.3569
RGB percentages13.7%, 21.6%, 35.7%
HSLhsl(218.6, 44.4%, 24.7%)
HSV / HSBhsv(218.6, 61.5%, 35.7%)
CMYK61.5%, 39.6%, 0%, 64.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,307,931
CSS custom property--colour: #23375B;

Brightness & contrast

Relative luminance0.03845WCAG 2.x, 0 is black and 1 is white
Perceived brightness55.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.87:1
Contrast with white11.87:1WCAG normal text: AAA
Contrast with black1.77:1WCAG normal text: Fail
Greyscale equivalent#353535
Inverted#DCC8A4

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#283A5Cno red cones; affects about 1% of men; ΔE 2 from the original
Deuteranopia#21355Ano green cones; the most common form, about 1% of men; ΔE 1.2 from the original
Tritanopia#003F44no blue cones; rare, and affects men and women equally; ΔE 25.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text11.87:1WCAG large text: AAA
Contrast with black, large text1.77:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 27.1Dark slateblue · ΔE 29.2Steel blue · ΔE 31.6Dim grey · ΔE 32.4Slate grey · ΔE 33.2Black · ΔE 33.6
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 27.14, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#5B4723
Analogous#23535B, #2B235B
Triadic#5B2337, #375B23
Split complementary#5B2B23, #535B23
Tetradic#5B2353, #5B4723, #235B2B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#7D9ACD
Lighter +30%#587DBF
Lighter +20%#3F64A5
Lighter +10%#314D80
Darker −10%#152136
Darker −20%#070A11
Darker −30%#000000
Darker −40%#000000
More saturated +25%#13336B
Less saturated −25%#333C4B

Channel breakdown

R35
G55
B91
Red35 (13.7%)
Green55 (21.6%)
Blue91 (35.7%)
Hue218.57°
Saturation (HSL)44.44%
Lightness24.71%
Dominant channelBlue
Hex per channelR 23 · G 37 · B 5B

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Every value on this page was computed from “23375b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.