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Recognised as Colour

#023959

  • #023959
  • Blue
  • Dark
  • Nearest: Dark slate grey

#023959 is a blue with RGB values 2, 57, 89 and HSL 202°, 96%, 18%. It is a dark colour, so white text on it reaches 12.1:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#023959#023959
HEX#023959
RGBrgb(2, 57, 89)
RGB (0–1)0.0078, 0.2235, 0.349
RGB percentages0.8%, 22.4%, 34.9%
HSLhsl(202.1, 95.6%, 17.8%)
HSV / HSBhsv(202.1, 97.8%, 34.9%)
CMYK97.8%, 36%, 0%, 65.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer145,753
CSS custom property--colour: #023959;

Brightness & contrast

Relative luminance0.0366WCAG 2.x, 0 is black and 1 is white
Perceived brightness53 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.12:1
Contrast with white12.12:1WCAG normal text: AAA
Contrast with black1.73:1WCAG normal text: Fail
Greyscale equivalent#303030
Inverted#FDC6A6

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#2A3A5Ano red cones; affects about 1% of men; ΔE 7.6 from the original
Deuteranopia#1E3258no green cones; the most common form, about 1% of men; ΔE 8.9 from the original
Tritanopia#004144no blue cones; rare, and affects men and women equally; ΔE 21.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text12.12:1WCAG large text: AAA
Contrast with black, large text1.73:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 23.5Steel blue · ΔE 31.1Dim grey · ΔE 32.5Black · ΔE 32.9Slate grey · ΔE 33.1Dark slateblue · ΔE 35.4
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 23.53, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#592202
Analogous#02594E, #020D59
Triadic#590239, #395902
Split complementary#59020D, #594E02
Tetradic#4E0259, #592202, #0D5902

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#2DAFFA
Lighter +30%#0599EF
Lighter +20%#0479BD
Lighter +10%#03598B
Darker −10%#011927
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#003A5B
Less saturated −25%#0D364E

Channel breakdown

R2
G57
B89
Red2 (0.8%)
Green57 (22.4%)
Blue89 (34.9%)
Hue202.07°
Saturation (HSL)95.6%
Lightness17.84%
Dominant channelBlue
Hex per channelR 02 · G 39 · B 59

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Every value on this page was computed from “hex 023959” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.