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Recognised as Colour

#23377C

  • #23377C
  • Blue
  • Dark
  • Nearest: Dark slateblue

#23377C is a blue with RGB values 35, 55, 124 and HSL 227°, 56%, 31%. It is a dark colour, so white text on it reaches 11:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#23377C#23377C
HEX#23377C
RGBrgb(35, 55, 124)
RGB (0–1)0.1373, 0.2157, 0.4863
RGB percentages13.7%, 21.6%, 48.6%
HSLhsl(226.5, 56%, 31.2%)
HSV / HSBhsv(226.5, 71.8%, 48.6%)
CMYK71.8%, 55.6%, 0%, 51.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,307,964
CSS custom property--colour: #23377C;

Brightness & contrast

Relative luminance0.04545WCAG 2.x, 0 is black and 1 is white
Perceived brightness62.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11:1
Contrast with white11:1WCAG normal text: AAA
Contrast with black1.91:1WCAG normal text: Fail
Greyscale equivalent#383838
Inverted#DCC883

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#05407Eno red cones; affects about 1% of men; ΔE 9.1 from the original
Deuteranopia#00387Bno green cones; the most common form, about 1% of men; ΔE 4.8 from the original
Tritanopia#004854no blue cones; rare, and affects men and women equally; ΔE 43.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text11:1WCAG large text: AAA
Contrast with black, large text1.91:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 10.4Midnight blue · ΔE 19.1Rebecca purple · ΔE 27.3Slate blue · ΔE 31.8Royal blue · ΔE 33.8Steel blue · ΔE 35.7
Nearest named CSS colourDark slateblue (#483D8B)ΔE 10.36, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#7C6823
Analogous#23647C, #3B237C
Triadic#7C2337, #377C23
Split complementary#7C3B23, #647C23
Tetradic#7C2364, #7C6823, #237C3B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8C9FDF
Lighter +30%#657DD3
Lighter +20%#3D5CC8
Lighter +10%#2E49A4
Darker −10%#182554
Darker −20%#0D142C
Darker −30%#010205
Darker −40%#000000
More saturated +25%#0F2C90
Less saturated −25%#374268

Channel breakdown

R35
G55
B124
Red35 (13.7%)
Green55 (21.6%)
Blue124 (48.6%)
Hue226.52°
Saturation (HSL)55.97%
Lightness31.18%
Dominant channelBlue
Hex per channelR 23 · G 37 · B 7C

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Every value on this page was computed from “23377c” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.