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Recognised as Colour

#0A313F

  • #0A313F
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#0A313F is a cyan with RGB values 10, 49, 63 and HSL 196°, 73%, 14%. It is a dark colour, so white text on it reaches 13.8:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#0A313F#0A313F
HEX#0A313F
RGBrgb(10, 49, 63)
RGB (0–1)0.0392, 0.1922, 0.2471
RGB percentages3.9%, 19.2%, 24.7%
HSLhsl(195.8, 72.6%, 14.3%)
HSV / HSBhsv(195.8, 84.1%, 24.7%)
CMYK84.1%, 22.2%, 0%, 75.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer667,967
CSS custom property--colour: #0A313F;

Brightness & contrast

Relative luminance0.0262WCAG 2.x, 0 is black and 1 is white
Perceived brightness43.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.78:1
Contrast with white13.78:1WCAG normal text: AAA
Contrast with black1.52:1WCAG normal text: Fail
Greyscale equivalent#2A2A2A
Inverted#F5CEC0

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#293040no red cones; affects about 1% of men; ΔE 9.6 from the original
Deuteranopia#222B3Fno green cones; the most common form, about 1% of men; ΔE 10.2 from the original
Tritanopia#003536no blue cones; rare, and affects men and women equally; ΔE 10.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text13.78:1WCAG large text: AAA
Contrast with black, large text1.52:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 16.1Black · ΔE 23.7Dim grey · ΔE 29.9Slate grey · ΔE 34.9Teal · ΔE 36.8Light slate grey · ΔE 37.9
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 16.12, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#3F180A
Analogous#0A3F32, #0A173F
Triadic#3F0A31, #313F0A
Split complementary#3F0A17, #3F330A
Tetradic#320A3F, #3F180A, #163F0A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#36B2DF
Lighter +30%#1F98C3
Lighter +20%#187597
Lighter +10%#11536B
Darker −10%#030F13
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#013548
Less saturated −25%#132D36

Channel breakdown

R10
G49
B63
Red10 (3.9%)
Green49 (19.2%)
Blue63 (24.7%)
Hue195.85°
Saturation (HSL)72.6%
Lightness14.31%
Dominant channelBlue
Hex per channelR 0A · G 31 · B 3F

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Every value on this page was computed from “0a313f” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.