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Recognised as Colour

#0B3040

  • #0B3040
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#0B3040 is a cyan with RGB values 11, 48, 64 and HSL 198°, 71%, 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

#0B3040#0B3040
HEX#0B3040
RGBrgb(11, 48, 64)
RGB (0–1)0.0431, 0.1882, 0.251
RGB percentages4.3%, 18.8%, 25.1%
HSLhsl(198.1, 70.7%, 14.7%)
HSV / HSBhsv(198.1, 82.8%, 25.1%)
CMYK82.8%, 25%, 0%, 74.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer733,248
CSS custom property--colour: #0B3040;

Brightness & contrast

Relative luminance0.02555WCAG 2.x, 0 is black and 1 is white
Perceived brightness43.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.9:1
Contrast with white13.9:1WCAG normal text: AAA
Contrast with black1.51:1WCAG normal text: Fail
Greyscale equivalent#292929
Inverted#F4CFBF

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#282F41no red cones; affects about 1% of men; ΔE 9 from the original
Deuteranopia#212A40no green cones; the most common form, about 1% of men; ΔE 9.7 from the original
Tritanopia#003435no blue cones; rare, and affects men and women equally; ΔE 12.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text13.9:1WCAG large text: AAA
Contrast with black, large text1.51:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 17.3Black · ΔE 23.7Dim grey · ΔE 30.4Slate grey · ΔE 35.1Teal · ΔE 37.8Light slate grey · ΔE 38.1
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 17.32, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#401B0B
Analogous#0B4036, #0B1540
Triadic#400B30, #30400B
Split complementary#400B15, #40350B
Tetradic#360B40, #401B0B, #16400B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#3AACDD
Lighter +30%#2192C3
Lighter +20%#1A7197
Lighter +10%#12516C
Darker −10%#040F14
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#023449
Less saturated −25%#142C37

Channel breakdown

R11
G48
B64
Red11 (4.3%)
Green48 (18.8%)
Blue64 (25.1%)
Hue198.11°
Saturation (HSL)70.67%
Lightness14.71%
Dominant channelBlue
Hex per channelR 0B · G 30 · B 40

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Every value on this page was computed from “0b3040” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.