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Recognised as Colour

#23457C

  • #23457C
  • Blue
  • Dark
  • Nearest: Dark slateblue

#23457C is a blue with RGB values 35, 69, 124 and HSL 217°, 56%, 31%. It is a dark colour, so white text on it reaches 9.5:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#23457C#23457C
HEX#23457C
RGBrgb(35, 69, 124)
RGB (0–1)0.1373, 0.2706, 0.4863
RGB percentages13.7%, 27.1%, 48.6%
HSLhsl(217.1, 56%, 31.2%)
HSV / HSBhsv(217.1, 71.8%, 48.6%)
CMYK71.8%, 44.4%, 0%, 51.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,311,548
CSS custom property--colour: #23457C;

Brightness & contrast

Relative luminance0.06069WCAG 2.x, 0 is black and 1 is white
Perceived brightness70.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.49:1
Contrast with white9.49:1WCAG normal text: AAA
Contrast with black2.21:1WCAG normal text: Fail
Greyscale equivalent#424242
Inverted#DCBA83

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#2B4A7Eno red cones; affects about 1% of men; ΔE 3.1 from the original
Deuteranopia#1C427Bno green cones; the most common form, about 1% of men; ΔE 2 from the original
Tritanopia#00525Ano blue cones; rare, and affects men and women equally; ΔE 35.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text9.49:1WCAG large text: AAA
Contrast with black, large text2.21:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 19.9Steel blue · ΔE 25.8Midnight blue · ΔE 31.4Slate grey · ΔE 35Cornflower blue · ΔE 35.4Dark slate grey · ΔE 36.7
Nearest named CSS colourDark slateblue (#483D8B)ΔE 19.89, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#7C5A23
Analogous#23727C, #2D237C
Triadic#7C2345, #457C23
Split complementary#7C2E23, #727C23
Tetradic#7C2372, #7C5A23, #237C2E

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8CACDF
Lighter +30%#658FD3
Lighter +20%#3D72C8
Lighter +10%#2E5BA4
Darker −10%#182F54
Darker −20%#0D192C
Darker −30%#010305
Darker −40%#000000
More saturated +25%#0F4090
Less saturated −25%#374A68

Channel breakdown

R35
G69
B124
Red35 (13.7%)
Green69 (27.1%)
Blue124 (48.6%)
Hue217.08°
Saturation (HSL)55.97%
Lightness31.18%
Dominant channelBlue
Hex per channelR 23 · G 45 · B 7C

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Every value on this page was computed from “23457c” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.