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Recognised as Colour

#0A2F45

  • #0A2F45
  • Blue
  • Dark
  • Nearest: Dark slate grey

#0A2F45 is a blue with RGB values 10, 47, 69 and HSL 202°, 75%, 15%. It is a dark colour, so white text on it reaches 13.9:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#0A2F45#0A2F45
HEX#0A2F45
RGBrgb(10, 47, 69)
RGB (0–1)0.0392, 0.1843, 0.2706
RGB percentages3.9%, 18.4%, 27.1%
HSLhsl(202.4, 74.7%, 15.5%)
HSV / HSBhsv(202.4, 85.5%, 27.1%)
CMYK85.5%, 31.9%, 0%, 72.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer667,461
CSS custom property--colour: #0A2F45;

Brightness & contrast

Relative luminance0.02527WCAG 2.x, 0 is black and 1 is white
Perceived brightness43.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.95:1
Contrast with white13.95:1WCAG normal text: AAA
Contrast with black1.51:1WCAG normal text: Fail
Greyscale equivalent#292929
Inverted#F5D0BA

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#252F46no red cones; affects about 1% of men; ΔE 7.2 from the original
Deuteranopia#1D2A45no green cones; the most common form, about 1% of men; ΔE 7.8 from the original
Tritanopia#003537no blue cones; rare, and affects men and women equally; ΔE 16.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text13.95:1WCAG large text: AAA
Contrast with black, large text1.51:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 20.6Black · ΔE 25.4Dim grey · ΔE 31.8Slate grey · ΔE 35.5Steel blue · ΔE 37.5Light slate grey · ΔE 38.4
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 20.58, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#45200A
Analogous#0A453E, #0A1145
Triadic#450A2F, #2F450A
Split complementary#450A11, #453E0A
Tetradic#3E0A45, #45200A, #11450A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#39A3E2
Lighter +30%#1D8ACB
Lighter +20%#176C9E
Lighter +10%#104D72
Darker −10%#041118
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#00324F
Less saturated −25%#142C3B

Channel breakdown

R10
G47
B69
Red10 (3.9%)
Green47 (18.4%)
Blue69 (27.1%)
Hue202.37°
Saturation (HSL)74.68%
Lightness15.49%
Dominant channelBlue
Hex per channelR 0A · G 2F · B 45

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Every value on this page was computed from “0a2f45” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.