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Colour

#23487B

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

#23487B is a blue with RGB values 35, 72, 123 and HSL 215°, 56%, 31%. It is a dark colour, so white text on it reaches 9.2:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#23487B#23487B
HEX#23487B
RGBrgb(35, 72, 123)
RGB (0–1)0.1373, 0.2824, 0.4824
RGB percentages13.7%, 28.2%, 48.2%
HSLhsl(214.8, 55.7%, 31%)
HSV / HSBhsv(214.8, 71.5%, 48.2%)
CMYK71.5%, 41.5%, 0%, 51.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,312,315
CSS custom property--colour: #23487B;

Brightness & contrast

Relative luminance0.06422WCAG 2.x, 0 is black and 1 is white
Perceived brightness71.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.19:1
Contrast with white9.19:1WCAG normal text: AAA
Contrast with black2.28:1WCAG normal text: Fail
Greyscale equivalent#444444
Inverted#DCB784

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#314C7Dno red cones; affects about 1% of men; ΔE 3 from the original
Deuteranopia#23447Ano green cones; the most common form, about 1% of men; ΔE 3 from the original
Tritanopia#00545Bno blue cones; rare, and affects men and women equally; ΔE 33 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text9.19:1WCAG large text: AAA
Contrast with black, large text2.28:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 22.9Steel blue · ΔE 23.9Slate grey · ΔE 32.4Dark slate grey · ΔE 33.7Light slate grey · ΔE 34.3Midnight blue · ΔE 34.6
Nearest named CSS colourDark slateblue (#483D8B)ΔE 22.86, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#7B5623
Analogous#23747B, #2A237B
Triadic#7B2348, #487B23
Split complementary#7B2A23, #747B23
Tetradic#7B2374, #7B5623, #237B2A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8CAEDE
Lighter +30%#6493D3
Lighter +20%#3C77C8
Lighter +10%#2E5FA3
Darker −10%#183153
Darker −20%#0C1A2C
Darker −30%#010204
Darker −40%#000000
More saturated +25%#0F458F
Less saturated −25%#374B67

Channel breakdown

R35
G72
B123
Red35 (13.7%)
Green72 (28.2%)
Blue123 (48.2%)
Hue214.77°
Saturation (HSL)55.7%
Lightness30.98%
Dominant channelBlue
Hex per channelR 23 · G 48 · B 7B

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