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Colour

#23455B

  • #23455B
  • Blue
  • Dark
  • Nearest: Dark slate grey

#23455B is a blue with RGB values 35, 69, 91 and HSL 204°, 44%, 25%. It is a dark colour, so white text on it reaches 10.1:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#23455B#23455B
HEX#23455B
RGBrgb(35, 69, 91)
RGB (0–1)0.1373, 0.2706, 0.3569
RGB percentages13.7%, 27.1%, 35.7%
HSLhsl(203.6, 44.4%, 24.7%)
HSV / HSBhsv(203.6, 61.5%, 35.7%)
CMYK61.5%, 24.2%, 0%, 64.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,311,515
CSS custom property--colour: #23455B;

Brightness & contrast

Relative luminance0.05369WCAG 2.x, 0 is black and 1 is white
Perceived brightness64.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.13:1
Contrast with white10.13:1WCAG normal text: AAA
Contrast with black2.07:1WCAG normal text: Fail
Greyscale equivalent#3F3F3F
Inverted#DCBAA4

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3B455Cno red cones; affects about 1% of men; ΔE 7.6 from the original
Deuteranopia#333F5Bno green cones; the most common form, about 1% of men; ΔE 8.5 from the original
Tritanopia#004B4Cno blue cones; rare, and affects men and women equally; ΔE 17.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text10.13:1WCAG large text: AAA
Contrast with black, large text2.07:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 15.1Dim grey · ΔE 24.2Slate grey · ΔE 26Light slate grey · ΔE 28.9Steel blue · ΔE 29.1Gray · ΔE 31.2
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 15.12, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#5B3923
Analogous#235B55, #23295B
Triadic#5B2345, #455B23
Split complementary#5B2329, #5B5523
Tetradic#55235B, #5B3923, #295B23

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#7DAECD
Lighter +30%#5896BF
Lighter +20%#3F7DA5
Lighter +10%#316180
Darker −10%#152936
Darker −20%#070D11
Darker −30%#000000
Darker −40%#000000
More saturated +25%#13486B
Less saturated −25%#33424B

Channel breakdown

R35
G69
B91
Red35 (13.7%)
Green69 (27.1%)
Blue91 (35.7%)
Hue203.57°
Saturation (HSL)44.44%
Lightness24.71%
Dominant channelBlue
Hex per channelR 23 · G 45 · B 5B

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Every value on this page was computed from “23455b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.