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Recognised as Colour

#23357C

  • #23357C
  • Blue
  • Dark
  • Nearest: Dark slateblue

#23357C is a blue with RGB values 35, 53, 124 and HSL 228°, 56%, 31%. It is a dark colour, so white text on it reaches 11.2:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#23357C#23357C
HEX#23357C
RGBrgb(35, 53, 124)
RGB (0–1)0.1373, 0.2078, 0.4863
RGB percentages13.7%, 20.8%, 48.6%
HSLhsl(227.9, 56%, 31.2%)
HSV / HSBhsv(227.9, 71.8%, 48.6%)
CMYK71.8%, 57.3%, 0%, 51.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,307,452
CSS custom property--colour: #23357C;

Brightness & contrast

Relative luminance0.04359WCAG 2.x, 0 is black and 1 is white
Perceived brightness61.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.22:1
Contrast with white11.22:1WCAG normal text: AAA
Contrast with black1.87:1WCAG normal text: Fail
Greyscale equivalent#363636
Inverted#DCCA83

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#003F7Eno red cones; affects about 1% of men; ΔE 10.1 from the original
Deuteranopia#00377Bno green cones; the most common form, about 1% of men; ΔE 5.4 from the original
Tritanopia#004653no blue cones; rare, and affects men and women equally; ΔE 43.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text11.22:1WCAG large text: AAA
Contrast with black, large text1.87:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 9.6Midnight blue · ΔE 17.3Rebecca purple · ΔE 26Slate blue · ΔE 30.9Royal blue · ΔE 33.2Indigo · ΔE 35
Nearest named CSS colourDark slateblue (#483D8B)ΔE 9.55, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#7C6A23
Analogous#23627C, #3D237C
Triadic#7C2335, #357C23
Split complementary#7C3E23, #627C23
Tetradic#7C2362, #7C6A23, #237C3D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8C9DDF
Lighter +30%#657BD3
Lighter +20%#3D59C8
Lighter +10%#2E46A4
Darker −10%#182454
Darker −20%#0D132C
Darker −30%#010205
Darker −40%#000000
More saturated +25%#0F2990
Less saturated −25%#374168

Channel breakdown

R35
G53
B124
Red35 (13.7%)
Green53 (20.8%)
Blue124 (48.6%)
Hue227.87°
Saturation (HSL)55.97%
Lightness31.18%
Dominant channelBlue
Hex per channelR 23 · G 35 · B 7C

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Every value on this page was computed from “23357c” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.